Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Hironori NAKAJIMA Last modified date:2018.03.27

Assistant Professor / Hydrogen Utilization Engineering / Department of Mechanical Engineering / Faculty of Engineering


Papers
1. Özgür Aydin,Hironori NAKAJIMA, Concentration Gradient of Reactants Extending from Reaction Sites Inward Inlet Periphery of Fuel Cells, Journal of the Electrochemical Society, in press, 2018.06.
2. Effect of gas flow channel structure on the performance of an anode-supported honeycomb solid oxide fuel cell
Hironori NAKAJIMA, Shunzaburo MURAKAMI and Tatsumi KITAHARA, Transactions of the JSME (in Japanese)
, [URL].
3. Hironori NAKAJIMA, Tatsumi Kitahara, Real-Time Electrochemical Impedance Spectroscopy Diagnosis of the Solid Oxide Fuel Cell for Marine Power Applications, Heat and Mass Transfer, 10.1007/s00231-017-2215-0, in press, 2017.11, [URL].
4. Hironori NAKAJIMA, Shunzaburo Murakami, Sou Ikeda, Tatsumi Kitahara, Three-dimensional flow channel arrangements in an anode-supported honeycomb solid oxide fuel cell, Heat and Mass Transfer, 10.1007/s00231-017-2154-9, in press, 2017.10, [URL].
5. Tatsuhiro Ochiai, Hironori NAKAJIMA, Takahiro Karimata, Tatsumi Kitahara, Kohei Ito, Yusuke Ogura, In-Situ Analysis of the in-Plane Current Distribution Difference between Electrolyte-Supported and Anode-Supported Planar Solid Oxide Fuel Cells by Segmented Electrodes, ECS Transactions, 10.1149/07801.2203ecst, 78, 1, 2203-2209, 2017.07, [URL].
6. Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, In Situ Measured Spatial Temperature Variations for Improving Reliability of Numerical SOFC Tools, ECS Transactions, 10.1149/07801.2191ecst, 78, 1, 2191-2201, 2017.07, [URL].
7. Hironori NAKAJIMA, Tatsumi Kitahara, Eisaku Tduda, Segmented Electrode Analysis of an Anode-Supported Planar Solid Oxide Fuel Cell for the Diagnosis of Marine Power Applications, ECS Transactions, 10.1149/07801.2109ecst, 78, 1, 2109-2113, 2017.07, [URL].
8. Yuto Wakita, Tachikawa Yuya, Hironori NAKAJIMA, Kohei Ito, Glass Shape Change during Firing for Improving the Seal of Planar SOFCs, ECS Transactions, 10.1149/07801.1731ecst, 78, 1, 1731-1737, 2017.07, [URL].
9. Kohei Ito, Takuya Sakaguchi, Yuta Tsuchiya, Akiko Inada, Hironori NAKAJIMA, Ryo Saito, Gas Crossover Suppression by Controlling Wettability of Cathode Current Collector, ECS Transactions, 10.1149/07514.1107ecst, 75, 14, 1107-1112, 2017.01, [URL].
10. Hua Li, Hironori NAKAJIMA, Kohei Ito, Optimization of Annealing Catalyst Powder for High Temperature PEMWE, ECS Transactions, 10.1149/07514.1095ecst, 75, 14, 1095-1105, 2017.01, [URL].
11. Yan Ming Hao, Hironori NAKAJIMA, Akiko Inada, Kazunari SASAKI, Kohei Ito, Separation and Characterization of Overpotentials in Electrochemical Hydrogen Pump with a Reference Electrode, ECS Transactions, 10.1149/07514.1155ecst, 75, 14, 1155-1163, 2017.01, [URL].
12. Tatsuhiro Ochiai, Hironori NAKAJIMA, Takahiro Karimata, Tatsumi Kitahara, Kohei Ito, Jun Shimano, Yusuke Ogura, In-Situ Analysis of the in-Plane Current Distributions in an Electrolyte-Supported Planar Solid Oxide Fuel Cell by Segmented Electrodes, ECS Transactions, 10.1149/07552.0091ecst, 75, 52, 91-98, 2017.01, [URL].
13. Hironori NAKAJIMA, Akiko Inada, Tatsumi Kitahara, Yusaku Nagata, Impedance Spectra Associated with Metal Deposition at the Negative Electrode from Contaminating Metal Particles at the Positive Electrode in a Lithium Ion Battery, ECS Transactions, 10.1149/07523.0027ecst, 75, 23, 27-36, 2017.01, [URL].
14. Sou Ikeda, Hironori NAKAJIMA, Tatsumi Kitahara, Enhancement of fuel transfer in anode-supported honeycomb solid oxide fuel cells, Journal of Physics: Conference Series, 10.1088/1742-6596/745/3/032082, 745, 3, 032082, 2016.12, [URL].
15. Hironori NAKAJIMA, Tatsumi Kitahara, Real-Time Electrochemical Impedance Spectroscopy Diagnosis of the Marine Solid Oxide Fuel Cell, Journal of Physics: Conference Series, 10.1088/1742-6596/745/3/032149, 745, 3, 032149, 2016.12, [URL].
16. Tatsumi Kitahara, Hironori NAKAJIMA, Kenta Ishikawa, Microporous Layer-coated Gas Diffusion Layer for Performance Enhancement of Polymer Electrolyte Fuel Cells without Humidification Using Anode Gas Recirculation, Journal of the Electrochemical Society, 10.1149/2.0251613jes, 163, 13, F1366-F1372, 2016.12, [URL].
17. Hua Li, Tsuyohiko Fujigaya, Hironori NAKAJIMA, Akiko Inada, Kohei Ito, Optimum structural properties for an anode current collector used in a polymer electrolyte membrane water electrolyzer operated at the boiling point of water, Journal of Power Sources, 10.1016/j.jpowsour.2016.09.086, 332, 16-23, 2016.11, [URL].
18. Tatsumi Kitahara, Hironori NAKAJIMA, Kenta Ishikawa, Gas Diffusion Layer Coated with a Microporous Layer Containing Hydrophilic CNTs to Enhance PEFC Performance without Humidification Using Anode Gas Recirculation, ECS Transactions, 10.1149/07514.0209ecst, 75, 14, 209-217, 2016.10, [URL].
19. Hironori NAKAJIMA, Daeho LEE, Ming-Tsang LEE, Costas P. GRIGOROPOULOS, Hydrogen Production with CuO/ZnO Nanowire Catalyst for a Nanocatalytic Solar Thermal Steam-Methanol Reformer, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.07.039, 41, 38, 16927-16931, 2016.08, [URL].
20. Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Reliability of the numerical SOFC models for estimating the spatial current and temperature variations, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.06.194, 41, 34, 15311-15324, 2016.07, [URL].
21. YangMing Hao, Hironori NAKAJIMA, Hiroshi Yoshizumi, Akiko Inada, Kazunari SASAKI, Kohei Ito, Characterization of an electrochemical hydrogen pump with internal humidifier and dead-end anode channel, Journal of Power Sources, doi:10.1016/j.ijhydene.2016.05.160, 2016.06, [URL].
22. Tatsumi Kitahara, Hironori NAKAJIMA, Microporous Layer-Coated Gas Diffusion Layer to Reduce Oxygen Transport Resistance in a Polymer Electrolyte Fuel Cell under High Humidity Conditions, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2016.04.117, 41, 22, 9547-9555, 2016.06, [URL].
23. Hua Li, Akiko Inada, Tsuyohiko Fujigaya, Hironori NAKAJIMA, Kazunari SASAKI, Kohei Ito, Effects of operating conditions on performance of high-temperature polymer electrolyte water electrolyzer, Journal of Power Sources, doi:10.1016/j.jpowsour.2016.03.108, 318, 192-199, 2016.04, [URL].
24. Hua Li, Akiko Inada, Hironori NAKAJIMA, Kohei Ito, Impact of Cathode Current Collector on High Temperature PEM Water Electrolysis, ECS Transactions, 10.1149/06918.0003ecst, 69, 18, 3-12, 2015.12, [URL].
25. Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Processes Involving in the Temperature Variations in Solid Oxide Fuel Cells In-Situ Analyzed Through Electrode-Segmentation Method, Journal of the Electrochemical Society, 10.1149/2.0701603jes, 163, 3, F216-F224, 2015.12, [URL].
26. Hiroshi Ito, Takuya Iwamura, Satoshi Someya, Tetsuo Munakata, Akihiro Nakano, Yun Heo, Masayoshi Ishida, Hironori NAKAJIMA, Tatsumi Kitahara, Effect of through-plane polytetrafluoroethylene distribution in gas diffusion layers on performance of proton exchange membrane fuel cells, Journal of Power Sources, 10.1016/j.jpowsour.2015.12.020, 306, 289-299, 2015.12, [URL].
27. Hironori NAKAJIMA, Tatsumi Kitahara, Diagnosis Method to Detect the Incorporation of Metallic Particles in a Lithium Ion Battery, ECS Transactions, 10.1149/06802.0059ecst, 68, 2, 59-74, 2015.12, [URL].
28. Liqing He, LI Hai-Wen, Hironori NAKAJIMA, Nikolay Tumanov, Yaroslav Filinchuk, Son-Jong Hwang, Manish Sharma, Hans Hagemann, Etsuo Akiba, Synthesis of a Bimetallic Dodecaborate LiNaB12H12 with Outstanding Super Ionic Conductivity, Chemistry of Materials, 10.1021/acs.chemmater.5b01568, 27, 16, 5483-5486, 2015.08, [URL].
29. Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Influence of Convective Heat Transfer by Air Flow on Local Current/Temperatures along Microtubular Solid Oxide Fuel Cells In-situ Identified by Electrode segmentation Method for Co- and Counter-flow Configurations, ECS Transactions, 10.1149/06801.2141ecst, 68, 1, 2141-2150, 2015.07, [URL].
30. Özgür Aydın, Hironori NAKAJIMA, Tatsumi Kitahara, Current and Temperature Distributions In-situ Acquired by Electrode-Segmentation Along a Microtubular Solid Oxide Fuel Cell Operating with Syngas, Journal of Power Sources, 10.1016/j.jpowsour.2015.06.024, 293, 1053-1061, 2015.06, [URL].
31. Takahiro KOSHIYAMA, Hironori NAKAJIMA, Takahiro KARIMATA, Tatsumi Kitahara, Kohei Ito, Soichiro MASUDA, Yusuke OGURA, Jun SHIMANO, Direct Current Distribution Measurement of an Electrolyte-Supported Planar Solid Oxide Fuel Cell under the Rib and Channel by Segmented Electrodes, ECS Transactions, 10.1149/06801.2217ecst, 68, 1, 2217-2226, 2015.06, [URL].
32. Hironori NAKAJIMA, Tatsumi Kitahara, Yuta Higashinaka, Yusaku Nagata, Effect of Electrode Mixing Conditions on the Performance of Lithium-Ion Batteries Analyzed by Fast Fourier Transform Electrochemical Impedance Spectroscopy, ECS Transactions, 10.1149/06422.0087ecst, 64, 22, 87-95, 2015.05, [URL].
33. Shota Kotake, Hironori NAKAJIMA, Tatsumi Kitahara, Mass Transfer in an Anode-Supported Honeycomb Solid Oxide Fuel Cell, ECS Transactions, 10.1149/06445.0135ecst, 64, 45, 135-142, 2015.05, [URL].
34. Kohei Ito, Yusuke Maeda, Takuya Sakaguchi, Shigeru Tsukamoto, Yuta Tsuchiya, Akiko Inada, Hironori NAKAJIMA, Analysis and visualization of water flow impact on hydrogen production efficiency in solid polymer water electrolyzer under high-pressure condition, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2015.03.045, 40, 18, 5995-6003, 2015.04, [URL].
35. Tatsumi Kitahara, Hironori NAKAJIMA, Kosuke OKAMURA, Gas Diffusion Layers Coated with a Microporous Layer Containing Hydrophilic Carbon Nanotubes for Performance Enhancement of Polymer Electrolyte Fuel Cells under both Low and High Humidity Conditions, Journal of Power Sources, doi:10.1016/j.jpowsour.2015.02.115, 283, 115-124, 2015.02, [URL].
36. Özgür Aydın, Takahiro Koshiyama, Hironori NAKAJIMA, Tatsumi Kitahara, In-situ Diagnosis and Assessment of Longitudinal Current Variation by Electrode-Segmentation Method in Anode-Supported Microtubular Solid Oxide Fuel Cells, Journal of Power Sources, 10.1016/j.jpowsour.2014.12.156, 279, 218-223, 2015.01, [URL].
37. Chiaki MIZUTANI, Tatsumi KITAHARA, Hironori NAKAJIMA, Kazunari SASAKI, Kohei ITO, Analysis of water behavior in PEFC through 3D thermal and temperature distribution measurement by ultrafine thermocouples, Transactions of JSME, [URL].
38. Chiaki MIZUTANI, Tatsumi KITAHARA, Hironori NAKAJIMA, Kazunari SASAKI, Kohei ITO, Analysis of water behavior in PEFC through 3D thermal and temperature distribution measurement by ultrafine thermocouples, Transactions of JSME, [URL].
39. Martin Andersson, Hironori NAKAJIMA, Tatsumi Kitahara, Akira Shimizu, Takahiro Koshiyama, Hedvig Paradis, Jinliang Yuan, Bengt Sunden, Comparison of Humidified Hydrogen and Partly Pre-Reformed Natural Gas as Fuel for Solid Oxide Fuel Cells applying Computational Fluid Dynamics, International Journal of Heat and Mass Transfer, 10.1016/j.ijheatmasstransfer.2014.06.033, 77, 1008-1022, 2014.10, [URL].
40. Tatsumi Kitahara, Hironori NAKAJIMA, Kosuke OKAMURA, Influence of GDL Coated with MPL Containing CNTs on PEFC Performance under Low and High Humidity Conditions, ECS Transactions, 10.1149/06403.0477ecst, 64, 3, 477-483, 2014.10, [URL].
41. Hironori NAKAJIMA, Performance of an Anode-Supported Honeycomb Solid Oxide Fuel Cell, Materials Science Forum, 10.4028/www.scientific.net/MSF.783-786.1698, 783 - 786, 1698-1703, 2014.05, [URL].
42. Tatsumi Kitahara, Hironori NAKAJIMA, Masaoki Inamoto, Kosuke Shinto, Triple Microporous Layer Coated Gas Diffusion Layer for Performance Enhancement of Polymer Electrolyte Fuel Cells under both Low and High Humidity Conditions, Journal of Power Sources, 10.1016/j.jpowsour.2013.10.009, 248, 1256-1263, 2014.02, [URL].
43. Hiroshi Ito, Katsuya Abe, Masayoshi Ishida, Akihiro Nakano, Tetsuhiko Maeda, Tetsuo Munakata, Hironori NAKAJIMA, Tatsumi Kitahara, Effect of through-plane distribution of polytetrafluoroethylene in carbon paper on in-plane gas permeability, Journal of Power Sources, 10.1016/j.jpowsour.2013.10.009, 248, 822-830, 2014.02, [URL].
44. Y. Takazono, A. Shimizu, H. Nakajima, T. Kitahara, Development of a PEFC with Serpentine Hybrid Pattern Gas Channels (5th Report, Electrochemical Impedance Spectroscopy Analysis of the Internal Resistances), Transactions of JSME, [URL].
45. Hironori NAKAJIMA, Tatsumi Kitahara, Kazuto TSUDA, Water Vapor Exchange Flow Channels to Enhance the Performance of Polymer Electrolyte Fuel Cells Without Cathode Humidification, ECS Transactions, 10.1149/05801.1799ecst, 58, 1, 1799-1805, 2013.10, [URL].
46. Tatsumi Kitahara, Hironori NAKAJIMA, Masaoki Inamoto, Kosuke Shinto, Influence of Triple MPL Coated GDL on the PEFC Performance under Low and High Humidity, ECS Transactions, 10.1149/05801.1401ecst , 58, 1, 1401-1408, 2013.10, [URL].
47. Kohei Ito, Yang Ming Hao, Hironori NAKAJIMA, Hiroshi Yoshizumi, Kazunari SASAKI, Electrochemical characterization of hydrogen pump with internal humidifier and dead-end anode channel , ECS Transactions, 10.1149/05801.0681ecst , 58, 1, 681-691, 2013.10, [URL].
48. Shota Kotake, Hironori NAKAJIMA, Tatsumi Kitahara, Flow Channel Configurations of an Anode-Supported Honeycomb Solid Oxide Fuel Cell, ECS Transactions, 10.1149/05701.0815ecst, 57, 1, 815-822, 2013.10, [URL].
49. Akira Shimizu, Hironori NAKAJIMA, Tatsumi Kitahara, Current Distribution Measurement of a Microtubular Solid Oxide Fuel Cell, ECS Transactions, 10.1149/05701.0727ecst, 57, 1, 727-732, 2013.10, [URL].
50. Yusuke Shiratori, Mio Sakamoto, Yutaro Takahashi, Yuto Wakita, Masaru Takada, Teppei Ogura, Hironori NAKAJIMA, Kazunari SASAKI, Development of Direct Internal Reforming SOFC Integrated with Paper-Structured Catalyst Fuelled by Biofuels, ECS Transactions, 10.1149/05701.2997ecst, 57, 1, 2997-3004, 2013.10, [URL].
51. Yusuke Shiratori, Teppei Ogura, Hironori NAKAJIMA, Mio Sakamoto, Yutaro Takahashi, Yuto Wakita, Takuya Kitaoka, Kazunari SASAKI, Study on paper-structured catalyst for direct internal reforming SOFC fueled by the mixture of CH4 and CO2, International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2013.06.046, 38, 10542-10551, 2013.07, [URL].
52. Tatsumi Kitahara, Hironori Nakajima, Masaoki Inamoto, Masashi Morishita, Novel Hydrophilic and Hydrophobic Double Microporous Layer Coated Gas Diffusion Layer to Enhance Performance of Polymer Electrolyte Fuel Cells under both Low and High Humidity, Journal of Power Sources, 10.1016/j.jpowsour.2013.01.150, 234, 129-138, 2013.07, [URL].
53. Akira Fukushima, Hironori NAKAJIMA, Tatsumi Kitahara, Performance Evaluation of an Anode-supported Honeycomb Solid Oxide Fuel Cell, ECS Transactions, 10.1149/05048.0071ecst, 50, 48, 71-75, 2013.05, [URL], An anode-supported honeycomb SOFC that can achieve high power density and enhanced durability was developed. Electrolyte layer of 8YSZ (8 mol% yittria stabilized zirconia) is employed by dip-coating an anode honeycomb substrate of Ni/YSZ, followed by being coated with cathode layer of La0.7Sr0.3MnO3. Current-voltage and current-power density characteristics of the cells having different anode and cathode flow channel configurations at 850℃ were measured. The results show promising performances of the cell as a starting point to develop stacks composed of multiple honeycomb cells..
54. Hironori NAKAJIMA, Tatsumi Kitahara, Yasutaka Takazono, Satoshi Miyahara, Akira Shimizu, In-plane Liquid Water Distribution at the Interface Between the Gas Diffusion Layer and Catalyst Layer in the Cathode of a Polymer Electrolyte Fuel Cell with a Hybrid Pattern Flow Field, ECS Transactions, 50, 2, 593-601, 2012.10, [URL].
55. Tatsumi Kitahara, Hironori Nakajima, Kyohei Mori, Masaoki Inamoto, Influence of Hydrophilic and Hydrophobic Double MPL Coated GDL on PEFC Performance, ECS Transactions, 50, 2, 437-444, 2012.10.
56. Tatsumi Kitahara, Hironori NAKAJIMA, Kyohei Mori, Hydrophilic and Hydrophobic double MPL Coated Gas Diffusion Layer for Enhanced Performance of Polymer Electrolyte Fuel Cells under No-Humidification at the Cathode, Journal of Power Sources, 10.1016/j.jpowsour.2011.10.002, 199, 29-36, 2012.02, [URL], Gas diffusion layers (GDLs) coated with a hydrophobic microporous layer (MPL) have been commonly used to improve the water management properties of polymer electrolyte fuel cells (PEFCs). In the present study, a new hydrophilic and hydrophobic double MPL coated GDL was developed to achieve further enhancement of PEFC performance under no-humidification at the cathode. The hydrophobic MPL, which consists of carbon black and polytetrafluoroethylene (PTFE), was coated on the carbon paper substrate. The hydrophilic layer, which consists of carbon black and polyvinyl alcohol (PVA), was also coated on the hydrophobic MPL. The hydrophilic layer is effective for conserving humidity at the catalyst layer, while the hydrophobic intermediate layer between the hydrophilic layer and the substrate prevents the removal of water in the hydrophilic layer via dry air in the substrate. Both decrease in the hydrophilic layer thickness to 5 μm and appropriate enhancement of hydrophilicity by increasing the PVA content to 5 mass% are effective for enhancing PEFC performance. Reducing the maximum pore diameter of hydrophobic intermediate layer to 20 μm is also effective for enhancing PEFC performance. However, when the pore diameter of the hydrophobic layer becomes too small, concentration overpotential tends to increase, thereby lowering PEFC performance..
57. Tatsumi Kitahara, Hironori Nakajima, Kyohei Mori, Hydrophilic and Hydrophobic Double MPL Coated GDL to enhance PEFC Performance under Low and High Humidity Conditions, ECS Transactions, 10.1149/1.3635592, 41, 1, 593-601, 2011.10, [URL].
58. Yasutaka Takazono, Hironori Nakajima, Tatsumi Kitahara, Effect of Gas Flow Channel without Cathode Humidification Analyzed with Electrochemical Impedance Spectroscopy, 4th World Hydrogen Technologies Convention, 0080, 2011.09.
59. Kazuto TSUDA, Yasutaka TAKAZONO, Tatsumi KITAHARA and Hironori NAKAJIMA, Development of a PEFC with Serpentine Hybrid Pattern Gas Channels (4th Report, PEFC Performance without Humidification), Transactions of the Japan Society of Mechanical Engineers, 2011, in press, [URL].
60. Hironori Nakajima, Tatsumi Kitahara, Current Distribution Analysis of a Microtubular Solid Oxide Fuel Cell with Surface Temperature Measurements, ECS Transactions, 10.1149/1.3570089, 35 (1), pp. 1087-1096, 2011.05, [URL].
61. Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, Masato Kazama, Influences of Microporous Layer Design Parameters for Gas Diffusion Layer on Permeability and PEFC Performance, Journal of Environment and Engineering, 10.1299/jee.6.17, 6, 1, 17-27, Volume 6, No. 1, 17-27, 2011.01, [URL].
62. Hironori NAKAJIMA, Tatsumi Kitahara, toshiaki konomi, Electrochemical Impedance Spectroscopy Analysis of an Anode-Supported Microtubular Solid Oxide Fuel Cell, Journal of the Electrochemical Society, 10.1149/1.3486805, 157, 11, B1686-B1692, 2010.09, [URL].
63. Yasutaka Takazono, Kazuto Tsuda, Tatsumi Kitahara, Hironori Nakajima, Toshiaki Konomi, Development of a PEFC with Serpentine-Interdigitated Hybrid Pattern Gas Channels, ECS Transactions, 10.1149/1.3484586, 33, 1, 927-935, Volume 33(1), pp. 927-935, 2010.10, [URL].
64. Tatsumi Kitahara, Hironori Nakajima, and Toshiaki Konomi, Influence of Hydrophilic and Hydrophobic Double MPL Coated GDL on PEFC Performance without Cathode Humidification, ECS Transactions, 10.1149/1.3484602, 33, 1, 1089-1097, Volume 33(1), pp. 1089-1097, 2010.10, [URL].
65. Hironori Nakajima, Tatsumi Kitahara, and Toshiaki Konomi, Effect of Flow Field Pattern and Microporous Layer on Gas Purge of a Polymer Electrolyte Fuel Cell, ECS Transactions, 10.1149/1.3484587, 33, 1, 937-944, Volume 33(1), pp. 937-944, 2010.10, [URL].
66. Development of a PEFC with Serpentine Hybrid Pattern Gas Channels : 3rd Report, Effects of Co- and Counter-Flows on the Stability of the Output Voltage [in Japanese], [URL].
67. Tatsumi KITAHARA, toshiaki konomi, Hironori NAKAJIMA, Microporous Layer Coated Gas Diffusion Layers for Enhanced Performance of Polymer Electrolyte Fuel Cells, Journal of Power Sources, 10.1016/j.jpowsour.2009.10.089, 195, 8, 2202-2211, 2010.04, [URL].
68. Hironori Nakajima, Toshiaki Konomi, Tatsumi Kitahara, and Takenori Ikeda, Cyclic Voltammetry Analysis of the Cathode Active Catalyst Area of a Power Generating Polymer Electrolyte Fuel Cell, Transactions of JSME, 75,758, pp.2068-2075.
69. Hironori Nakajima, Toshiaki Konomi, and Tatsumi Kitahara, Thermal Analysis of a Microtubular Solid Oxide Fuel Cell Using Electrochemical Impedance Spectroscopy, ECS Transactions, Volume 25 (2), pp. 359 - 368, 2009.09, [URL].
70. Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, Influence of Gas Diffusion Layers with Microporous Layer on the Performance of Polymer Electrolyte Fuel Cells, ECS Transactions, Volume 25 (1), pp. 1735-1744, 2009.09, [URL].
71. Tatsumi KITAHARA, Toshiaki KONOMI, Hironori NAKAJIMA and Makoto MURATA, Effects of Design Parameters in Paper Type Gas Diffusion Layer on the Performance of Polymer Electrolyte Fuel Cells (Measures to Prevent Flooding and Drying-Up), Journal of Environment and Engineering, Vol. 4, No. 2, pp. 338-345 (2009) , 2009.09, [URL].
72. Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, and Masato Kazama, Influences of Microporous Layer Design Parameters for Gas Diffusion Layer on Permeability and PEFC Performance, Transactions of JSME, Vol.75, No.755, pp.1524-1531..
73. Hironori Nakajima, Toshiaki Konomi, Tatsumi Kitahara, and Satoshi Igaue, Impedance Analysis of a Micro Tubular Solid Oxide Fuel Cell (2nd Report, Separation of the Anode and Cathode Overpotentials), Transactions of JSME, Vol.75, No.755, pp.1pp.1517-1523.
74. Hironori Nakajima, Toshiaki Konomi, Tatsumi Kitahara, and Satoshi Igaue, Impedance Analysis of a Micro Tubular Solid Oxide Fuel Cell (1st Report, Separate Analysis of the Impedance of the Anode and Cathode), Transactions of JSME, Vol.75, No.755, p. 1510-1516.
75. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, A Study of the Exhaust Process of the Product Water in the PEFC by EDX Mapping of a Tracer, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 75, No. 753, pp. 1119-1126..
76. Development of a PEFC with Serpentine Hybrid Pattern Gas Channels (2nd Report, Effects of the Flow Velocity in a Low Pressure Chanenl), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 75, No. 752, pp. 577-584, [URL].
77. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, Masanori Tashiro, and Yasutaka Takazono, Development of a PEFC with Serpentine Hybrid Pattern Gas Channels (1st Report, Design and Performance of the PEFC), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 75, No. 752, pp. 569-576., [URL].
78. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, Analysis of Water Balance in a PEFC at Transient Operation Mode (Effects of the Properties of Gas Diffusion Layers on the Concentration Overpotential in a PEFC with Serpentine Flow Channels Under Start-up Mode), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No. 748, pp. 2648-2655..
79. Hironori NAKAJIMA, Toshiaki KONOMI, Tatsumi KITAHARA, and Hideaki TACHIBANA, Electrochemical Impedance Parameters for the Diagnosis of a Polymer Electrolyte Fuel Cell Poisoned by Carbon Monoxide in Reformed Hydrogen Fuel, Transactions of the ASME, Journal of Fuel Cell Science and Technology , 5, 041013, 2008.11, [URL], We have investigated the behavior of an operating polymer electrolyte fuel cell (PEFC) with supplying a mixture of carbon monoxide (CO) and hydrogen (H2) gases into the anode to develop the PEFC diagnosis method for anode CO poisoning by reformed hydrogen fuel. We analyze the characteristics of the CO poisoned anode of the PEFC at 80°C including CO adsorption and electro-oxidation behaviors by current-voltage (I-V) measurement and electrochemical impedance spectroscopy (EIS) to find parameters useful for the diagnosis. I-V curves show the dependence of the output voltage on the CO adsorption and electro-oxidation. EIS analyses are performed with an equivalent circuit model consisting of several resistances and capacitances attributed to the activation, diffusion, and adsorption/desorption processes. As the result, those resistances and capacitances are shown to change with current density and anode overpotential depending on the CO adsorption and electro-oxidation. The characteristic changes of those parameters show that they can be used for the diagnosis of the CO poisoning..
80. Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, Yoshinobu Tateishi, Influences of Gas Diffusion Layer Permeability on the Performance of Polymer Electrolyte Fuel Cells, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No. 746, pp. 2221-2228.
81. Takuya Hoshiko, Hironori Nakajima, Toshiaki Konomi, Tatsumi Kitahara, and Shoichiro Kita, Estimation of Water Layer Thickness Adjacent to the Cathode Catalyst Layer of a PEFC (Analysis Using Electrochemical Impedance Spectroscopy), ECS Transactions, Volume 16, Issue 2, pp. 2117-2123, 2008.10, [URL].
82. Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, Yoshinobu Tateishi, Makoto Murata, Nico Haak, and Peter Wilde, Best Combination of Gas Diffusion Layers for Polymer Electrolyte Fuel Cell under Cathode Condition of Very Low Humidity , ECS Transactions, Volume 16, Issue 2, pp. 1603-1613, 2008.10, [URL].
83. Takuya HOSHIKO, Hironori NAKAJIMA, Toshiaki KONOMI, and Tatsumi KITAHARA, Estimation of Water Layer Thickness at the Cathode Catalyst Layer Surface of Polymer Electrolyte Fuel Cells from Diffusion Impedance,Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No. 741, pp. 1176-1182..
84. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, Masanori Tashiro, and Yasutaka Takazono, Development of a PEFC with Parallel Hybrid Pattern Gas Channels (3rd Report, Effects of GDL Design Parameters on the Performance of a PEFC with Interdigitated Gas Channels), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No.741, pp.1010-1017.
85. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, Masanori Tashiro, and Yasutaka Takazono, Development of a PEFC with Parallel Hybrid Pattern Gas Channels (2nd Report, Performance and Flooding Under the Rib of Interdigitated Gas Channels), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No. 741, pp1003-1009..
86. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, Masanori Tashiro, Development of the PEFC with Parallel Hybrid pattern Gas Channels (1st Report, Design and Performance Test of the Gas Channels), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 74, No. 741, pp.995-1002.
87. Toshiaki Konomi, Tatsumi Kitahara, Hironori Nakajima, and Yuya Tanaka, Analysis of Electric Generation Distribution on PEFC Electrode (2nd Report, Electric Generation Distribution on a PEFC with Ribs and Flow Channels of 2mm width), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.74, No.739 (2008-3), p.678-683.
88. Makoto Murata, Tatsumi Kitahara, Toshiaki Konomi, Hironori Nakajima, Effects of Design Parameters in Paper Type Gas Diffusion Layer on the Performance of Polymer Electrolyte Fuel Cells : Measures to Prevent Flooding and Drying-Up, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.74, No.737 (2008-1), p.183-189.
89. Hironori NAKAJIMA, Toshiaki Konomi, Tatsumi KITAHARA, Direct water balance analysis on a polymer electrolyte fuel cell (PEFC): Effects of hydrophobic treatment and micro porous layer addition to the gas diffusion layer of a PEFC on its performance during a simulated start-up operation, Journal of Power Sources , 10.1016/j.jpowsour.2007.06.004, 171, 2, 457-463, 2007.09, [URL].
90. Koji Nitta, Shinji Inazawa, Kazunori Okada, Hironori Nakajima, Toshiyuki Nohira, Rika Hagiwara, Analysis of tungsten film electrodeposited from a ZnCl2–NaCl–KCl melt, Electrochimica Acta, 53(1), pp. 20-23, 2007.09, [URL].
91. Hironori NAKAJIMA, Toshiyuki NOHIRA, Rika HAGIWARA, Koji NITTA, Shinji INAZAWA, Kazunori OKADA, Electrodeposition of Metallic Tungsten Films in ZnCl2-NaCl-KCl-KF-WO3 Melt at 250 C, Electrochimica Acta, 53(1), pp. 24-27 , 2007.09, [URL].
92. Toshiyuki Nohira, Hironori Nakajima, Kan Kitagawa, Rika Hagiwara, Kouji Nitta, Shinji Inazawa, and Kazunori Okada, Electrodeposition of Refractory Metals from Some ZnCl2 Based Molten Salts at 150-250C, Molten Salts 15, in Memory of Robert Osteryoung, ECS Transactions, 3(35), pp. 333-340, 2007.09, [URL].
93. Konomi, T., Kitahara, T., Nakajima, H. and Murakami, H., Analysis of Electric Generation Distribution on PEFC Electrode (1st Report, Electric Generation Distribution under Rib and Gas Channel), Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.73, No.726 (2007-2), p.631-637.
94. Hironori Nakajima, Toshiyuki Nohira, Yasuhiko Ito, Signe Kjelstrup and Dick Bedeaux, The Surface Adsorption of Hydride Ions and Hydrogen Atoms on Zn Studied by Electrochemical Impedance Spectroscopy with a Non-Equilibrium Thermodynamic Formulation, Journal of Non-Equilibrium Thermodynamics, 10.1515/JNETDY.2006.011, Vol. 31, pp. 231-255, 2006.10, [URL].
95. Hironori Nakajima, Toshiyuki Nohira and Rika Hagiwara, Electrodeposition of metallic molybdenum films in ZnCl2-NaCl-KCl-MoCl3 systems at 250 °C, Electrochimica Acta, 51, 3776-3780, 2006.05, [URL].
96. Hironori NAKAJIMA, Toshiyuki Nohira, Rika Hagiwara, Electrodeposition of Refractory Metals in Medium-Temperature Molten Salts, Molten Salts XIV, The Electrochemical Society Proceedings Series, PV 2004-24, 945-954, 2006.01.
97. Katsutoshi Kobayashi, Hironori Nakajima, Takuya Goto and Yasuhiko Ito, Thermodynamics of the N2/N3- Redox Couple in a LiBr-KBr-CsBr-Li3N Melt, The Journal of Physical Chemistry B, 109, 23972-23975, 2005.11, [URL].
98. Hironori NAKAJIMA, Toshiyuki Nohira, Rika Hgiwara, Koji Nitta, Shinji Inazawa, Kazunori Okada, Electrodeposition of metallic molybdenum films in molten ZnCl2-NaCl-KCl-MoCl5 systems at 250°C, Journal of Rare Earths, 23, 16-20, 2005.10.
99. Hironori NAKAJIMA, Toshiyuki Nohira, Rika Hagiwara, Electrodeposition of Metallic Tungsten in ZnCl2-NaCl-KCl-WCl4 Melt at 250゜C, Electrochemical and Solid-State Letters, 8, C91-C94, 2005.08, [URL].
100. Katsutoshi Kobayashi, Hironori Nakajima, Takuya Goto and Yasuhiko Ito, Thermodynamic Investigations of Nitrogen Electrode Reaction in a Molten LiCl-KCl-CsCl-Li3N System, Journal of the Electrochemical Society, 152, E207-E211, 2005.05, [URL].
101. Hironori Nakajima, Toshiyuki Nohira and Yasuhiko Ito, Electrochemical Impedance Spectroscopy Study of a Hydrogen Electrode Reaction at a Zn Electrode in a Molten LiCl-KCl-LiH System, The Journal of Physical Chemistry B, 109, 9645-9650, 2005.04, [URL].
102. Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Dissolution of Hydrogen in Molten LiCl-KCl, Electrochemistry, 73, 733-735, 2005.01.
103. Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Infrared Spectroscopy of Molten LiCl-KCl under Hydrogen Gas Atmosphere, Journal of Physical Chemistry A, 108, 4567-4569, 2004.01, [URL].
104. Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Infrared Spectroscopy of Molten LiCl-KCl-LiH, Electrochemical and Solid-State Letters, 7, E27-E29, 2004.07, [URL].
105. Hironori Nakajima, Toshiyuki Nohira and Yasuhiko Ito, The Single Electrode Peltier Heats of Li+/Li, H2/H- and Li+/Pd-Li in a Molten LiCl-KCl System, Electrochimica Acta, 49, 4987-4991, 2004.01, [URL].
106. Hironori NAKAJIMA, Toshiyuki Nohira, Yasuhiko Ito, Thermodynamic Investigations of Hydrogen Electrode Reaction in a Molten LiCl-KCl-LiH System, Electrochemical and Solid-State Letters, 5, E17-E22, 2002.05, [URL].