| 1. |
S. Kasamatsu, A. Kuwabara, K. Hoshino, J. Hyodo and Y. Yamazaki, Dopant Configurations and Hydration Behavior in Heavily Sc-Doped BaZrO3 from Machine-Learning Assisted First-Principles Statistical Thermodynamics, 23rd International Conference on Solid State Ionics, 2022.12. |
| 2. |
Susumu Fujii, Yuta Shimizu, Junji Hyodo, Akihide Kuwabara, Yoshihiro Yamazaki, Exploration for non-perovskite proton-conducting oxides using high- throughput computation and machine learning, 6th International Symposium on Frontiers in Materials Science, 2022.11. |
| 3. |
Yuna Yamazaki, Shunsaku Takagi, Junji Hyodo, Yoshihiro Yamazaki, Discovery of novel triple-conducting oxide BaPb0.5Sc0.5O3-d, R4年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部・合同学術講演会, 2022.06. |
| 4. |
Nai Shi、Kang Zhu、Shusuke Kasamatsu、 Ranran Peng、Junji Hyodo、Yun Xie、Yoshihiro Yamazaki, Enhanced cathode activity and proton ceramic fuel cells performance by electrochemical surface reconstruction, 第48回固体イオニクス討論会, 2022.12. |
| 5. |
＠J. Hyodo, ＃K. Kitabayashi, ＃K. Hoshino, Y. Okuyama, Y. Yamazaki, High Proton Conductivity and Chemical Stability in Heavily Scandium-Doped Barium Zirconate (HSBZ), Solid State Proton Conductors (SSPC-20), 2021.10. |
| 6. |
Y. Yamazaki, Data-driven discovery of proton-conducting oxides, Solid State Proton Conductors (SSPC-20), 2021.10. |
| 7. |
K. Tsujikawa, J. Hyodo, M. Shiga, Y. Okuyama, Y. Yamazaki, Discovery of Novel Proton-Conducting Oxide Assisted by Machine Learning, 2021年度日本金属学会九州支部 ・日本鉄鋼協会九州支部・軽金 属学会九州支部・合同学術講演会, 2021.06. |
| 8. |
Y. Yamazaki, Proton Trapping in fully hydrated hydrated yttrium -doped barium zirconate, The 15th International Conference on Diffusion in Solids and Liquids, 2019.06, Yttrium-doped barium zirconate shows high proton diffusivity at an intermediate temperature. Such feature is beneficial as an electrolyte for solid oxide fuel cells operated at the temperatures. Though high, the proton diffusion is hindered by trapping effect. It is an attractive interaction with relatively negatively charged dopant that reduces the fraction of mobile protons (H+), more severely at lower temperatures [1]. The effect was experimentally confirmed by electrochemical measurement combined with thermogravimetry as well as high-temperature proton NMR. The 20at% Y-doped barium zirconate sample contained about 0.05 protons and 0.075 oxygen vacancies per formula unit. Now, there is a discussion in which the existing oxygen vacancies might have an impact on the proton trapping. To investigate it, we prepared fully hydrated pellet, BaZr0.8Y0.2O2.9H0.2, that does not contain any oxygen vacancies and performed electrochemical measurements. Proton diffusivities in the partially and fully hydrated pellets are almost equivalent, both indicating proton trapping. The oxygen vacancies remained in the oxide have negligible impact on macroscopic proton diffusion, thus proton trapping.. |
| 9. |
Y. Yamazaki, Presentation about Kyushu University Platform of Inter/Transdisciplinary Energy Research (Q-PIT), 九州大学エネルギーウィーク2020, 2020.01. |
| 10. |
Y. Uchiyama, J. Hyodo, Y. Yamazaki, Role of water Molecules for CO oxidation Rate over Pt-loaded CeO2 Catalyst, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 11. |
Y. Yamazaki, J. Hyodo, K. Tsujikawa, Y. Okuyama, M. Shiga, A. Kuwabara, Machine learning and ab initio calculations for proton-conducting oxides, Machine learning and ab initio calculations for proton-conducting oxides, Materials Research Meeting 2019, 2019.12. |
| 12. |
K. Kitabayashi, J. Hyodo, Y. Okuyama, Y. Yamazaki, Heavy Sc doping and its impact on proton-dopant association, The 13th Pacific Rim Conference of Ceramics Societies, 2019.10. |
| 13. |
K. Tsujikawa, M. Shiga, J. Hyodo, K. Hoshino, Y. Yamazaki, Y. Okuyama, Prediction of proton concentration in virtual compositions by machine learning, The 13th Pacific Rim Conference of Ceramics Societies, 2019.10. |
| 14. |
Y.Yamazaki, Proton-conducting oxide as solid oxide fuel cells electrolyte, 20th KIM-JIM International symposium on energy storage materials, 2019.09. |
| 15. |
Y.Yamazaki, Design principle for fast proton-conducting oxides, the 14th Petite workshop, 2019.10. |
| 16. |
Y. Yamazaki, Materials technologies for hydrogen-based sustainable energy society, Kyushu University-Tsinghua University Joint Workshop on Hydrogen/Decarbonization Economy, 2019.10. |
| 17. |
Y. Yamazaki, Oxygen nonstoichiometry and its impact on photocatalytic activities of strontium titanates, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 18. |
J. Hyodo, Y. Okuyama, Y. Yamazaki, Diffusion behavior of proton in fully hydrated Y-doped BaZrO3, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 19. |
S. Ehara, J. Hyodo, Y. Yamazaki, Photocatalytic Oxygen Evolution Reaction Using n- and p-type Fe-doped Strontium Titanates, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 20. |
M. Kuroiwa, J. Hyodo, Y. Yamazaki, Oxide Ion Diffusion in LaGa0.8Mg0.2O3-δ Thin Film, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 21. |
T. Yamashita, J. Hyodo, Y. Yamazaki, Prediction of I-V Characteristic for Solid Oxide Fuel Cells via Machine Learning, The 22nd International Conference on Solid State Ionics, 2019.06. |
| 22. |
J. Hyodo, J.K. Kim, Y.J. Kim, W.C. Jung, Y. Yamazaki, Outermost Surface Composition and Its Impacts on Oxygen Exchange Kinetics of La1-xSrxMn1-yAlyO3-d Thin Film for Solar Thermochemical Fuel Production , The 22nd International Conference on Solid State Ionics, 2019.06. |
| 23. |
Y.Uchiyama, J. Hyodo, Y. Yamazaki, CO oxidation Rate over Pt-loaded CeO2 Catalyst and the effect of Water, 2019年度合同学術講演会, 2019.06. |
| 24. |
J.K. Kim, J. Hyodo, Y.J. Kim, W.C. Jung, Y. Yamazaki, Outermost Surface Chemistry and its Impact on Oxygen Reduction Reaction Kinetics in Sr- and Al-doped Lanthanum Manganite Thin Film, 九州大学エネルギーウィーク2019, 2019.01. |
| 25. |
Y. Yamazaki, Enhanced photocatalytic activity of strontium titanate by oxygen nonstoichiometry, The 120th meeting of American Ceramics Society, 2018.10. |
| 26. |
K. Hoshino, J. Hyodo, K. Yamamoto , A. Kuwabara, H. Setoyama, T. Okajima, Y. Yamazaki, Active Hydration Site in Sc-doped Barium Zirconate, 5th Solid-state Chemistry & Ionics workshop, 2018.09. |
| 27. |
Y. Tani, J. Hyodo, Y. Yamazaki, Order parameter and symmetry breaking: impact on oxygen diffusivity in Mg-doped LaGaO3, 5th Solid-state Chemistry & Ionics workshop, 2018.09. |
| 28. |
Y. Bando, J. Hyodo, Y. Yamazaki, Rate-limiting Factor of Oxygen Evolution Reaction for Strontium Titanate Photocatalyst, 5th Solid-state Chemistry & Ionics workshop, 2018.09. |
| 29. |
K. Hoshino, K. Yamamoto, J. Hyodo, A. Kuwabara, H. Setoyama, T. Okajima, Y. Yamazaki, Insights into BaZr0.8Sc0.2O3-δ Hydration Revealed by In-situ X-ray Absorption Spectroscopy and Ab initio Calculation, 平成３０年度合同学術講演会, 2018.06. |
| 30. |
山崎仁丈, Transdisciplineary energy materials science and education at Q-PIT, 九州大学エネルギーウィーク2018, 2018.01. |
| 31. |
Y. Tani, J. Hyodo, Y. Yamazaki, Weakly first-order phase transiton and its impact on oxygen ion conductivity in Mg-doped lanthanum gallate, 平成３０年度合同学術講演会, 2018.06. |
| 32. |
Y.Yamazaki, Defect manipulation towards a sustainable energy future, The 9th International Symposium on Novel Carbon Resource Sciences, 2012.11. |
| 33. |
Y.Yamazaki, Energy functions in perovskites: water splitting and proton conduction, Grey group seminar, Department of Chemistry, University of Cambridge, 2013.07. |
| 34. |
Y.Yamazaki, Activating energy functions in perovskites: water splitting and proton conduction, Cavendish Laboratory, University of Cambridge, 2013.07. |
| 35. |
Y.Yamazaki, Atmosphere-controlled thermogravimetry: quantitative detection of proton in oxides, Netzsch User Meeting, California Institute of Technology, 2014.03. |
| 36. |
Y.Yamazaki, How to activate energy functions in oxides? ~ thermochemical solar fuels and solid oxide fuel cells, KAIST, 2014.09. |
| 37. |
Y. Yamazaki, Perovskite oxides as energy materials, Special Seminar in Department of Materials Science and Engineering, 2017.06. |
| 38. |
Y. Yamazaki, Recent progress in understanding proton transport in doped barium zirconates, FOXCET Workshop: Proton Ceramic Reactors - Fundamentals and Applications, 2017.06. |
| 39. |
Y. Yamazaki, Hydrogen bonding defines proton transport in doped barium zirconates, The 21st international conference on Solid-State Ionics, 2017.06. |
| 40. |
Y.Yamazaki, Operando X-ray absorption spectroscopy and low energy ion scattering: tools to understand solar-driven thermochemical CO2 reduction using Sr-doped LaMnO3-delta, Solid State Electrochemistry workshop 2016, 2016.10. |
| 41. |
Y.Yamazaki, Proton conduction and thermochemical fuel production in perovskite oxides, 2016.09. |
| 42. |
Y.Yamazaki, Solar-driven thermochemical CO2 reduction using nonstoichiometric perovskite, Engineering Conferences International (ECI ) , 2016.09. |
| 43. |
Y.Yamazaki, Hydrogen Bond: a Parameter Defining Proton-Dopant Association Energy and Proton Diffusivity in Doped Barium Zirconates, The 18th international conference on solid state protonic conductors (SSPC-18), 2016.09. |
| 44. |
Y.Yamazaki, 兵頭 潤次, MD.Hazim, “Low-Energy Ion Scattering: Analysis of Outmost Surface for La0.6Sr0.4MnO3-d , 日本金属学会2016年春期(第158回)大会, 2016.03. |
| 45. |
Y.Yamazaki, T. Nihei, J. Koike, Phosphorous diffusion in Pd-Cu-Ni-P bulk metallic glass, International Conference on Processing & Manufacturing of Advanced Materials, 2006.07. |
| 46. |
Yoshihiro Yamazaki, Proton trapping: a key to design proton-conducting electrolyte for solid oxide fuel cells, 4th International Symposium on Energy Challenges and Mechanics – working on small scales, 2015.08. |
| 47. |
Y.Yamazaki, Thermochemical solar fuel production using perovskite oxides, MIT, 2015.08. |
| 48. |
Y.Yamazaki, How to activate perovskite oxide functions for sustainable energy?, Leibniz Institute for Surface Modification, 2014.08. |
| 49. |
Y.Yamazaki, L. Buannic, Y. Okuyama, J.C. Lucio-Vega, F. Blanc, C.P. Grey, S.M. Haile, a proton-conducting oxide electrolyte for fuel cells: electrochemistry and NMR, Stony Brook University and University of Cambridge on video conference, 2011.06. |
| 50. |
Y.Yamazaki, Y. Iijima, Diffusion enhancement under ultra-high hydrogen pressure and limitation of Fick's law applicability, 2001.06. |
| 51. |
Y.Yamazaki, Overview of researches in Advanced Functional Inorganic Materials Research Division, Kyocera Professor Meeting,, 2014.09. |
| 52. |
Y.Yamazaki, Activating energy functions in perovskites: thermochemical water splitting and proton conduction, I2CNER seminar, Kyushu University, 2013.06. |
| 53. |
Y.Yamazaki, Defect control in perovskite for energy applications, Seminar, Kyoto University, 2012.11. |
| 54. |
Y.Yamazaki, Solar thermochemical fuel production and solid oxide fuel cells, Fuel Cell Division Meeting, World Premier International Research Center, Kyushu University, 2012.11. |
| 55. |
Y.Yamazaki, C.-K. Yang, S.M. Haile, Decisive thermodynamics factor of perovskite catalysts for thermochemical water splitting, The 20th International Conference on Solid State Ionics (SSI-20), 2015.06. |
| 56. |
Y.Yamazaki, Y. Okuyama, J. Potticarry, K. Yamamoto, S.M. Haile, Proton trapping: a key to control proton transport in oxides, The 20th International Conference on Solid State Ionics (SSI-20), 2015.06. |
| 57. |
Y.Yamazaki, C.-K. Yang, S.M. Haile, Solar-driven thermochemical water splitting with perovksite oxides, 2014 International conference on Artificial photosynthesis (ICARP2014), 2014.11. |
| 58. |
Y.Yamazaki, F. Blanc, Y. Okuyama, L. Buannic, J.C. Lucio-Vega, C.P. Grey, S.M. Haile, Proton trapping in yttrium-doped barium zirconate, The 9th workshop on Reactive metal processing, 2014.02. |
| 59. |
Y.Yamazaki, C.K. Yang, S. Wilke, S.M. Haile, New catalysts for thermochemical water splitting based on earth abundant elements, poster session, The 19th International Conference on Solid State Ionics, 2013.06. |
| 60. |
Y.Yamazaki, C.K. Yang, S.M. Haile, Catalytic oxides for thermochemical water splitting, Materials Research Society, 2012.11. |
| 61. |
Y.Yamazaki, F. Blanc, Y. Okuyama, L. Buannic, C.P. Grey, S.M. Haile, Proton trapping in doped barium zirconates: electrochemistry and nuclear magnetic resonance, poster session, 16th international conference on Solid State Protonic Conductor (SSPC-16), 2012.09. |
| 62. |
Y.Yamazaki, Y. Okuyama, S.M. Haile, Tailoring proton transport in proton-conducting oxide electrolyte, Materials Research Society, 2012.04. |
| 63. |
Y.Yamazaki, C.-K. Yang, S.M. Haile, Bio-inspired oxides for thermochemical water splitting, Poster session, International symposium on Chemical Conversion of Light Energy, 2012.03. |
| 64. |
Y.Yamazaki, C.-K. Yang, S.M. Haile, New oxygen absorbing materials for solar thermochemical fuel production, The first Artificial photo-synthesis forum, 2012.01. |
| 65. |
Y.Yamazaki, L. Buannic, Y. Okuyama, J.C. Lucio-Vega, F. Blanc, C.P. Grey, S.M. Haile, Proton trapping in proton-conducting oxide electrolyte for fuel cells: electrochemistry and nuclear magnetic resonance, Materials Research Society, 2011.11. |
| 66. |
Y.Yamazaki, Y. Okuyama, J.C. Lucio-Vega, S.M. Haile, Proton-trapping in a proton-conducting oxide electrolyte for fuel cells, Challenges in Renewable Energy, ISACS-4, 2011.07. |
| 67. |
Y.Yamazaki, L. Buannic, F. Blanc, L. Sperrin, D.S. Middlemiss, R. Dervisoglu, Z. Gan, S.M. Haile, C.P. Grey, Solid state NMR studies of protonic conductors, 17th Conference on Solid State Ionics, 2011.07. |
| 68. |
Y.Yamazaki, S.M. Haile, A new thermodynamic methodology for water uptake: unraveling defect chemistry in yttrium-doped barium zirconate, Materials Research Society, 2011.04. |
| 69. |
Y.Yamazaki, C.-K. Yang, S.M. Haile, Cation nonstoichiometry in yttrium-doped barium zircoante, 6th Reactive Metal Workshop, 2011.03. |
| 70. |
Y.Yamazaki, C.-K. Yang, R. Hernandez-Sanchez, S.M. Haile, Impact of cation nonstoichiometry on phase behavior, mictrostructure, water incorporation and proton conductivities in yttrium-doped BaZrO3, 15th International Conference on Solid State Protonic Conductors, 2010.08. |
| 71. |
Y.Yamazaki, R. Hernandez-Sanchez, S.M. Haile, High total proton conductivity in large-grained yttrium-doped barium zirconate, 17th Conference on Solid State Ionics, 2009.06. |
| 72. |
Y.Yamazaki, P. Babilo, S.M. Haile, Equilibrium constants for water incorporation and oxidation reactions in yttrium-doped barium Zirconates, 213th Electrochemical Society Meeting, 2008.05. |
| 73. |
Y.Yamazaki, P. Babilo, S.M. Haile, Proton Transport and defect chemistry of Y-doped BaZrO3, UCSB-MPI workshop, 2008.02. |
| 74. |
Y.Yamazaki, T. Nihei, J. Koike, T. Ohtsuki, Self-Diffusion of P in Pd-Cu-Ni-P metallic glass, The first international conference on diffusion in solids and liquids (DSL2005), 2005.07. |
| 75. |
Y.Yamazaki, T. Iida, Y. Iijima, Y. Fukai, Self-diffusion of Nb in Nb-H alloys, 6th International Conference on Diffusion in Materials (DIMAT2004), 2004.06. |
| 76. |
Y.Yamazaki, M. Mizouchi, H. Nitta, Y. Iijima, Self-diffusion in high-purity γ-iron, The 9th International Conference on Ultra-High Purity Base Metals, 2002.10. |
| 77. |
Y.Yamazaki, H. Kakuta, M. Okada, Y. Iijima, Effect of High Hydrogen Pressure on Interdiffusion in Au/Fe Couple, Fourth Pacific Rim International Conference on Advanced Materials and Processing (PRICM4), 2001.12. |
| 78. |
Y.Yamazaki, K. Takasawa, S. Takaki, K. Abiko, Y. Iijima, Self-Diffusion in a High-Purity Fe-50mass%Cr-8mass%W alloy, 8th International Conference on Ultra-High-Purity Base Metals (UHPM-2001), 2001.06. |
| 79. |
Y.Yamazaki, H. Kakuta, M. Okada, Y. Iijima, Interdiffusion in Au/Fe Couples under Elevated Hydrogen Pressures, 5th International Conference on Diffusion in Materials (DIMAT2000), 2000.06. |
| 80. |
Y.Yamazaki, M. Sugihara, S. Takaki, K. Abiko, Y. Iijima, Volume and Grain Boundary Diffusion in High Purity Cr-Fe Alloys, 7th International Conference on Ultra-High-Purity Base Metals (UHPM-2000), 2000.06. |
| 81. |
Y.Yamazaki, Y. Iijima, Deviation from Darken's Relation in Au/Fe Diffusion Couples, International Conference on Solid-Solid Phase Transformations '99 (JIMIC-3), 1999.07. |
| 82. |
Y.Yamazaki, T. Sugiyama, Y. Iijima, Interdiffusion and Kirkendall Effect in Au/Ni Diffusion Couples, International Conference on Solid-Solid Phase Transformations '99 (JIMIC-3), 1999.07. |
| 83. |
Y.Yamazaki, Activating solar energy functions in perovskite-type metal oxides
, Chemical Society of Japan, 2014.03. |
| 84. |
Y.Yamazaki, F. Blanc, Y. Okuyama, L. Buannic, C.P. Grey, S.M. Haile, Proton trapping: a high-temperature nuclear magnetic resonance approach, Solid State Ionics Discussion, 2012.12. |
| 85. |
Y.Yamazaki, F. Blanc, Y. Okuyama, L. Buannic, C.P. Grey, S.M. Haile, Proton trapping: a guide for proton conducting oxide electrolyte development, International Workshop on Protonic Ceramic Fuel Cells Status & Prospects (PPCC2013 – Prospects Protonic Ceramic Cells), 2013.07. |
| 86. |
Y.Yamazaki, Novel perovskite catalysts for thermochemical water splitting, The 19th International Conference on Solid State Ionics, 2013.06. |
| 87. |
Y.Yamazaki, Proton diffusion in solid oxide fuel cell electrolytes, International Conference on Diffusion in Materials, 2014.08. |
| 88. |
Y.Yamazaki, Proton trapping in proton-conducting oxide, 17th International Conference on Solid State Protonic Conductors, 2014.09. |
