北海道大学工学研究院 応用化学部門 エネルギー材料化学研究室（青木研）

English

研究業績

2025年

論文 / Papers

  1. R. Maeda, H. Toriumi, T. Takahashi, H. Ariga-Miwa, T. Uruga, S.W. Jeong and Y. Aoki, “Bipolar electrolysis cells with hydride ion-proton conductor heterojunction” Cell Reports Physical Science, Vol. 6, No. 10, pp. 102839 (2025).
  2. F. Zheng, B. Yuan, Y. Cai, H. Xiang, C.Tang, L. Meng, L. Du, X. Zhang, F. Jiao, Y. Aoki, N. Wang and S. Ye, “Machine Learning Tailored Anodes for Efficient Hydrogen Energy Generation in Proton-Conducting Solid Oxide Electrolysis Cells” Nano-Micro Letters, Vol. 17, No. 1, pp. 274 (2025).
  3. T. Takahashi, H. Toriumi, G. Kobayashi, T. Saito, K. Mori, S.W. Jeong, H. Habazaki and Y. Aoki, “Mechanistic Insights into Hydride Incorporation in BaZr1–xInxO3−δ-Based Perovskite Oxyhydrides” Chemistry of Materials, (2025).
  4. T. Takahashi, H. Toriumi, G. Kobayashi, T. Saito, K. Mori, H. Ariga-Miwa, T. Uruga, R. Maeda, S. W. Jeong, H. Habazaki, Y. Aoki, “Topochemical Transformation from Protonic to Hydride-ionic Phase in BaSn1–xInxO3–0.5x Perovskites” ACS, Chemistry of Materials, Vol. 37, No. 3, pp. 1111-1122 (2025).
  5. F. Zheng, H. Xiang, L. Zhong, X. Wang, X. Zhang, Q. Su, C. Tang, L. Meng, L. Du, F. Jiao, Y. Aoki, B. Yuan, N. Wang and S. Ye, “Optimization of Performance at Air Electrode Side for Protonic Solid Oxide Cells: Advances and Machine Learning Guided Perspectives” Small, Vol. 21, No. 29 (2025).
  6. X. Zhang, C. Tang, Y. Yang, F. Zheng, Q. Su, H. Xiang, L. Meng, L. Du, Y. Aoki, D. Luo, N. Wang, S. Ye, “Novel High-Entropy Air Electrodes Enhancing Electrochemical Performances of Reversible Protonic Ceramic Cells” Advanced Functional Materials, pp. 2421083 (2025).
  7. C. Tang, B. Yuan, X. Zhang, F. Zheng, Q. Su, L. Meng, L. Du, D. Luo, Y. Aoki, N. Wang, S. Ye, “Rationally Designed Air Electrode Boosting Electrochemical Performance of Protonic Ceramic Cells” Advanced Energy Materials, pp. 2402654 (2025).
  8. S. Sajeev, M. Vincent, P. Garbacz, M. Strawski, C. Zhu, Y. Aoki and D. Kowalski, “The role of Ni substitution in manganite perovskite Li–O 2 battery” RSC Appl. Interfaces, Vol. 2, pp. 1051-1058 (2025).
  9. S. Kitano, R. Tagusari, Y. Nagasaka, Y. Aoki and H. Habazaki, “Development of Iridium Clusters-Loaded Tungsten Disulfide Composite Catalyst with Poisoning Tolerance for Electrochemical Ammonia Oxidation” Electrochemistry, Vol. 93, No. 2, pp. 027013-027013 (2025).
  10. S. Kitano, R. Tagusari, T. Sugiyama, Y. Nagasaka, N. Wakabayashi, R. Wada, T. Nagao, M. Iwai, K. Fushimi, Y. Aoki and H. Habazaki, “Thiosulfate species promoting hydrogen evolution reaction at the heterointerface of Ir clusters-loaded WS 2 nanosheets” Chemical Communications, vol. 61, No. 27, pp. 5114-5117 (2025).
  11. C. Tang, N. Wang, S. Kitano, H. Habazaki, Y. Aoki, S. Ye, “Boosting High-performance in Zr-rich Side Protonic Solid Oxide Electrolysis Cells by Optimizing Functional Interlayer” Green Energy & Environment, Vol. 10, No. 1, pp. 150-160 (2025).

学会 / Presentations

2024年

論文 / Papers

  1. S. Kitano, H. Motohashi, M. Iwai, K. Fushimi, Y. Aoki and H. Habazaki, “Systematic combination of palladium facets and monolayer metal hydroxide nanosheets for promotion of ethanol oxidation reaction” Applied Surface Science, Vol. 670, pp. 160552 (2024).
  2. X. Zetao, D. Quintero, S. Kitano, T. Nagao, M. Iwai, Y. Aoki, K. Fushimi and H. Habazaki, “Preparation of highly active and durable electrodes for alkaline water electrolysis by anodizing of commercial FeNi and FeNiCo alloys” Electrochimica Acta, Vol. 491, pp. 144352 (2024).
  3. B. Yuan, N. Wang, C. Tang, L. Meng, L. Du, Q. Su, Y. Aoki, S. Ye, “Advances and challenges in high-performance cathodes for protonic solid oxide fuel cells and machine learning-guided perspectives” Nano Energy, Vol. 122, pp. 109306 (2024).
  4. N. Wang, B. Yuan, F. Zheng, S. Mo, X. Zhang, L. Du, L. Xing, L. Meng, L. Zhao, Y. Aoki, C. Tang and S. Ye, “Machine‐learning assisted screening proton conducting Co/Fe Based oxide for the air electrode of protonic solid oxide cell” Advanced Functional Materials, Vol. 34, No. 12, pp. 2309855 (2024).
  5. Y. Kunisada, C. Kura, N. Sakaguchi, C. Zhu, H. Habazaki, Y. Aoki, “Unveiling the Origin of Fast Hydride Ion Diffusion at Grain Boundaries in Nanocrystalline TiN Membranes” ACS Omega, Vol. 9, No. 12, pp. 13738-13745 (2024).
  6. N. Kamitani, S. W. Jeong, H. Habazaki, Y. Aoki, “Vanadium Nitride Is an Efficient Hydrogen-Diffusive Cathode for Green Ammonia Electrochemical Synthesis by Protonic Solid Oxide Electrolysis Cells” ACS Sustainable Chemistry & Engineering, Vol. 12, No. 5, pp. 2100-2109 (2024).
  7. C. Tang, Y. Yao, N. Wang, X. Zhang, F. Zheng, L. Du, D. Luo, Y. Aoki, S. Ye, “Green hydrogen production by intermediate‐temperature protonic solid oxide electrolysis cells: Advances, challenges, and perspectives” InfoMat, Vol. 6, No. 3, pp. e12515 (2024).

学会 / Presentations

  1. Takuya Takahashi, Hajime Toriumi, Genki Kobayashi, Yoshitaka Aoki “H− ion conductivity of cubic perovskite BaSn1-xInxO3-δHε oxyhydrides” 24th International conference on solid state ionics, Jul. 15-19, 2024, QEII Centre, London.
  2. Ryosuke Maeda, Hajime Toriumi, Yoshitaka Aoki “H− Ion Conductivity of BaZr0.5In0.5O2.25H0.5 Oxyhydride” 24th International conference on solid state ionics, Jul. 15-19, 2024, QEII Centre, London.
  3. Takuya Takahashi, Hajime Toriumi, Genki Kobayashi, Yoshitaka Aoki “H−/H+ bipolar ionic conductor based on perovskite type BaSn1-xInxO3-2/x” 7th Asian SOFC Symposium, Oct. 22-25, 2024, Hokkaido University, Sapporo.
  4. Ryosuke Maeda, Hajime Toriumi, Yoshitaka Aoki “H− Ion Conductivity of BaZr0.5In0.5O2.25H0.5 Oxyhydride” 7th Asian SOFC Symposium, Oct. 22-25, 2024, Hokkaido University, Sapporo.
  5. Yujiro Ichikawa, Yoshitaka Aoki “H-/H+ Bipolar Ion Conduction of Strontium Indate-Zirconate Perovskite” 7th Asian SOFC Symposium, Oct. 22-25, 2024, Hokkaido University, Sapporo.
  6. Rui Komatsu, Yoshitaka Aoki “Ammonia Electrolysis Using a Protonic Solid Oxide Electrolysis Cell with an Fe-Loaded VNx Cathode” 7th Asian SOFC Symposium, Oct. 22-25, 2024, Hokkaido University, Sapporo.
  7. 市川裕次郎, 鄭成佑, 青木芳尚 “ペロブスカイト型InドープSrZrO3-δのH-/H+バイポーラーイオン伝導体” 第34回日本MRS年次大会, 12/16-18, 2024, 横浜市開港記念会館 他, 神奈川県.
  8. 屋敷黎音, 髙橋拓也, 鄭成佑, 青木芳尚 “H-/H+バイポーラーイオン伝導体BaCe1-xInxO3-x/2の電気伝導性” 第34回日本MRS年次大会, 12/16-18, 2024, 横浜市開港記念会館 他, 神奈川県.

招待講演 / Invited lecture

  1. 青木芳尚「水素透過セラミックスの開発とプロトンSOFCへの応用」第129回SOFC研究会、Jan 29, 2024、東京

2023年

論文 / Papers

  1. L. Fadillah, D. Kowalski, M. Vincent, C. Zhu, S. Kitano, Y. Aoki and H. Habazaki, “Lithiation of Anodic Magnetite–Hematite Nanotubes Formed on Iron” ACS Applied Materials & Interfaces, Vol. 15, No. 45, pp. 52563-52570 (2023).
  2. Y. Aoki, “Studies on Protonic Solid Oxide Cells” Electrochemistry, Vol. 91, No. 10, pp. 102002 (2023).
  3. N. Wang, Z. Huang, C. Tang, L. Xing, L. Meng, Y. Aoki, L. Du and S. Ye, “Functional layer engineering to improve performance of protonic ceramic fuel cells” Rare Metals Vol. 42, No. 7, pp. 2250-2260 (2023).
  4. C. Zhu, B. Zhao, M. Takata, Y. Aoki and H. Habazaki, “Biomass derived porous carbon for superior electrocatalysts for oxygen reduction reaction” Journal of Applied Electrochemistry, Vol. 53, No. 7, pp. 1379-1388 (2023).
  5. R. Zhu, Z. Xiong, H. Yang, N. Wang, S. Kitano, C. Zhu, Y. Aoki, H. Habazaki, “Anode/Cathode Dual‐Purpose Aluminum Current Collectors for Aqueous Zinc‐Ion Batteries” Scientific Reports, Vol. 33, No. 8, pp. 2211274 (2023).
  6. S. Kitano, Y. Sato, R. Tagusari, R. Zhu, D. Kowalski, Y. Aoki and H. Habazaki, “Facile synthesis approach of bifunctional Co–Ni–Fe oxyhydroxide and spinel oxide composite electrocatalysts from hydroxide and layered double hydroxide composite precursors” RSC advances, Vol. 13, No. 16, pp. 10681-10692 (2023).
  7. H. Yang, R. Zhu, Y. Yang, Z. Lu, Z. Chang, P. He, C. Zhu, S. Kitano, Y. Aoki, H. Habazaki and H. Zhou, “Sustainable high-energy aqueous zinc–manganese dioxide batteries enabled by stress-governed metal electrodeposition and fast zinc diffusivity” Energy & Environmental Science, Vol. 16, No. 5, pp. 2133-2141 (2023).

学会 / Presentations

  1. 高橋拓也, 鳥海創, 小林玄器, 北野翔, 幅崎浩樹, 青木芳尚 “ペロブスカイト型BaM1-xInxO3-yHz (M=Sn, Ce, Zr, Ti)の合成と評価” 第９０回電気化学会, 3/27-29, 2023, 東北工業大学.
  2. Takuya Takahashi, Hajime Toriumi, Genki Kobayashi, Yoshitaka Aoki “Synthesis and characterization of perovskite-type BaM1-xInxO3-yHz(M=Sn, Ce, Zr, Ti)” Solid-State Protonic Conductor-21, Sep. 17-22, 2023, Nishizin plaza, Fukuoka.
  3. Ryosuke Maeda, Hajime Toriumi, Yoshitaka Aoki “Conductivity Measurement of BaZr0.5In(II)0.5O2.25H0.5” Solid-State Protonic Conductor-21, Sep. 17-22, 2023, Nishizin plaza, Fukuoka.
  4. 高橋拓也, 鳥海創, 小林玄器, 青木芳尚 “ペロブスカイト型BaM1-xInxO3-yHz (M=Sn, Ce, Zr, Ti)の合成と評価” 第49回固体イオニクス討論会, 11/15-17, 2023, 北海道大学.

招待講演 / Invited lecture

  1. Y. Aoki, H. Toriumi and G. Kobayashi “Hydride ion defects in barium indate zirconate perovskite” 19th International Conference on Diffusion in Solids and Liquids (DSL2023), Jun 26-29, Heraqulion, Greece.
  2. Y. Aoki, H. Toriumi and G. Kobayashi “BaZr1-xInxO3-d perovskites are both proton and hydride-ion conductor” Petite XII: An International Workshop on the Defect-Chemical Nature of Solids, Sep. 4-7, Edesheim, Germany.
  3. Y. Aoki, H. Toriumi and G. Kobayashi “Hydrogenation of BaM1-xInxO3-d perovskites (M = Zr, Sn, Ce etc.)” Solid-State Protonic Conductor-21, Sep. 17-22, 2023, Fukuoka, Japan.
  4. Y. Aoki “Metal nitrides are efficient hydrogen-diffusive cathode for protonic solid oxide electrolysis cells”, PACRIM15, Nov 5-9. Shenzhen, China

知財 / IP

  1. 特願2023-041188 “セラミック可逆セル、ならびにそれを含む水蒸気電解セル及び燃料電池” 　2023/03/15、出願者：北海道大学

2022年以前、過去５年の代表論文

1. H–イオン伝導体

1. H. Toriumi, G. Kobayashi, T. Saito, T. Kamiya, T. Sakai, T. Nomura, S. Kitano, H. Habazaki and Y. Aoki*, “Hydrogen permeable ceramics of barium indate-zirconate perovskite oxyhydride with enhanced hydride ion/electron mixed conductivity” Chemistry of Materials, Vol. 34, No. 16, pp. 7389 – 7401 (2022). IF = 10.5.

2. C. Kura, Y. Kunisada, E. Tsuji, C. Zhu, H. Habazaki, S. Nagata, T. P. Michael, R. A. de Souza and Y. Aoki* “Room temperature hydrogen separation by titanium nitride membranes with high hydride ion conductivity” Nature Energy, Vol. 2, pp. 786-794 (2017). IF = 60.9.

2. ヘテロ接合燃料電池

3. S. W. Jeong, N. Wang, S. Kitano, H. Habazaki, M. Nagayama and Y. Aoki* “Metal/Oxide Heterojunction Boosts Fuel Cell Cathode Reaction at Low Temperature” Advanced Energy Materials, Vol. 11, pp. 2102015/1 – 11 (2021). IF = 29.7.

4. S. W. Jeong, T. Yamaguchi, M. Okamoto, C. Zhu, H. Habazaki, M. Nagayama and Y. Aoki*, “Proton pumping boosts power generation of hydrogen permeable metal support fuel cells” ACS Applied Energy Materials, Vol. 3, No. 3, pp. 1222-1234 (2020). IF = 6.96.

5. Y. Aoki, C. Wiemann, V. Feyer, H.-S. Kim, M. Scneider, H. Ill-Yoo and M. Martin “Bulk mixed ion electron conduction in amorphous gallium oxide causes memristive behaviour” Nature Communications, Vol. 4, No. 3, pp. 3473/1-/9 (2014). IF = 17.7

3. H+-SOEC/SOFC

6. K. Akimoto, N. Wang, C. Tang, S. W. Jeong, S. Kitano, H. Habazaki and Y. Aoki*, “Functionality of the Cathode–Electrolyte Interlayer in Protonic Solid Oxide Fuel Cells” ACS Applied Energy Materials, (2022). IF = 6.96

7. C. Tang, N. Wang, R. Zhu, S. Kitano, H. Habazaki and Y. Aoki*, “Design of anode functional layers for protonic solid oxide electrolysis cells” Journal of Materials Chemistry A, Vol. 10, No. 29, pp. 15719 – 15730 (2022). IF = 15.4

8. N. Wang, C. Tang, L. Du, R. Zhu, L. Xing, Z. Song, B. Yuan, L. Zhao, Y. Aoki and S. Ye, “Advanced Cathode Materials for Protonic Ceramic Fuel Cells: Recent Progress and Future Perspectives” Advanced Energy Materials, Vol. 12, pp. 2201882/1 – 29 (2022）. IF = 29.7

9. C. Tang, K. Akimoto, N. Wang, L. Fadillah, S. Kitano, H. Habazaki, Y. Aoki*, “The effect of an anode functional layer on the steam electrolysis performances of protonic solid oxide cells” Journal of Materials Chemistry A, vol. 9, No. 24, pp. 14032 – 14042 (2021).　 IF = 15.4

10. N. Wang, B. Yuan, C. Tang, L. Du, R. Zhu, Y. Aoki, W. Wang, L. Xing, S. Ye, “Machine learning–accelerated development of efficient mixed protonic–electronic conducting oxides as the air electrodes for protonic ceramic cells” Advanced Materials, Vol. 34, pp. 22034462/1 – 13 (2022）. IF = 30.6

11. K. Hu, T. Ohto, Y. Nagata, M. Wakisaka, Y. Aoki, J. Fujita, and Y. Ito “Catalytic activity of graphene-covered non-noble metals governed by proton penetration in electrochemical hydrogen evolution reaction” Nature Communications, Vol. 12, pp. 1 – 9 (2021). doi; 10.1038/s41467-020-20503-7, ). IF = 17.7

12. Y. Aoki*, K. Takase, H. Kiuchi, D. Kowalski, Y. Sato, H. Toriumi, S. Kitano, H. Habazaki, “In Situ Activation of a Manganese Perovskite Oxygen Reduction Catalyst in Concentrated Alkaline Media” Journal of the American Chemical Society, Vol. 143, pp. 6505 – 6515 (2021). doi; 10.1021/jacs.1c00449, IF = 16.4

13. N. Wang, S. Hinokuma, T. Ina, C. Zhu, H. Habazaki and Y. Aoki* “Mixed Proton–electron–oxide Ion Triple Conducting Manganite as Efficient Cobalt-free Cathode for Protonic Ceramic Fuel Cells” Journal of the Materials Chemistry A, Vol. 8, No. 6, pp. 2730-2741 (2020). IF = 15.4

 
北海道大学工学研究院 応用化学部門 エネルギー材料化学研究室(青木研）
〒0608628 北海道札幌市北区北１３条西８丁目 北海道大学工学部材料化学棟 MC528