Chief Scientist Laboratories Solid State Chemistry Laboratory
Chief Scientist: Genki Kobayashi (Ph.D.)
Research Summary
Effective utilization of renewable energy and a shift away from mass consumption of fossil fuels are essential for building a sustainable society, which requires new technologies that enable highly efficient energy and material conversion and high-density energy storage. Based on inorganic solid-state chemistry, we explore outstanding ionics materials, including electrodes and solid electrolytes with innovative functions. We are researching a wide range of topics, from elucidating the mechanisms of physical properties and functions to developing energy storage/conversion and material conversion devices based on new operating principles.
Main Research Fields
- Chemistry
Related Research Fields
- Engineering
- Interdisciplinary Science & Engineering
- Inorganic Materials Chemistry
- Energy-related Chemistry
- Inorganic Materials and properties
Keywords
- Solid State Ionics
- Exploration for New Functional Materials
- Energy Storage & Conversion
- Material Conversion
- Ceramics
Selected Publications
Papers with an asterisk(*) are based on research conducted outside of RIKEN.
- 1.
*Takeiri, F., Watanabe, A., Okamoto, K., Bresser, D., Lyonnard, S., Frick, B., Ali, A., Imai, Y., Nishimura, M., Yonemura, M., Saito, T., Ikeda, K., Otomo, T., Kamiyama, T., Kanno, R., Kobayashi, G.:
"Hydride-Ion-Conducting K2NiF4-Type Ba-Li Oxyhydride Solid Electrolyte"
Nature Materials 21, 325-330 (2022). - 2.
*Morgan, H., Yamamoto, T., Nishikubo, T., Ohmi, T., Koike, T., Sakai, Y., Azuma, M., Ishii, H., Kobayashi, G., McGrady, J.:
"Sequential Pressure-Induced B1-B2 Transitions in the Anion-Ordered Oxyhydride Ba2YHO3"
Inorg. Chem. 61, 7043-7050 (2022). - 3.
*Uchimura, T., Takeiri, F., Okamoto, K., Saito, T., Kamiyama, T., Kobayashi, G.:
"Direct Synthesis of Barium Titanium Oxyhydride for Use as a Hydrogen Permeable Electrode"
J. Materials Chem. A 9, 20371-20374 (2021). - 4.
*Matsui, N., Hinuma, Y., Iwasaki, Y., Suzuki, K., Guangzhoung, J., Nawaz H., Imai, Y., Yonemura, M., Hirayama, M., Kobayashi, G., Kanno, R.:
"The Effect of Cation Size on Hydride-Ion Conduction in LnSrLiH2O2 (Ln = La, Pr, Nd, Sm, Gd) Oxyhydrides"
J. Mater Chem. A 8, 24685-24694 (2020). - 5.
*Nawaz, H., Takeiri, F., Kuwabara, A., Yonemura, M., Kobayashi, G.:
"Synthesis and H– Conductivity of New Oxyhydride Ba2YHO3 with Anion-Ordered Rock-Salt Layers"
Chem. Commun. 56, 10373-10376 (2020). - 6.
*Takeiri, F., Watanabe, A., Kuwabara, A., Nawaz, H., Ayu, N., Yonemura, M., Kanno, R., Kobayashi, G.:
"Ba2ScHO3: H– Conductive Layered Oxhydride with H– Site Selectivity"
Inorg. Chem. 58, 4431-4436 (2019). - 7.
*Matsui, N., Kobayashi, G., Suzuki, K., Watanabe, A., Kubota, A., Iwasaki, Y., Yonemura, M., Hirayama, M., Kanno, R.:
"Ambient Pressure Synthesis of La2LiHO3 as a Solid Electrolyte for a Hydrogen Electrochemical Cell"
J. Am. Ceram. Soc. 102, 3228-3235 (2019). - 8.
*Watanabe, A., Kobayashi, G., Matsui, N., Yonemura, M., Kubota, A., Suzuki, K., Hirayama, M., Kanno, R.:
"Ambient Pressure Synthesis and H– Conductivity of LaSrLiH2O2"
Electrochem. 85(2), 88-92 (2017). - 9.
*Kobayashi, G., Hinumra, Y., Matsuoka, S., Watanabe, A., Iqbal, M., Hirayama, M., Yonemura, M., Kamiyama, T., Kanno, R.:
"Pure H– Conduction in Oxyhydrides"
Science 351, 1314-1317 (2016). - 10.
*Kobayashi, G., Irii, Y., Matsumoto, F., Ito, A., Ohsawa, Y., Yamamoto, S., Cui, Y., Son, J.-Y., Sato, Y.:
"Improving Cycling Performance of Li-Rich Layered Cathode Materials Through Combination of Al2O3-Based Surface Modification and Stepwise Pre-cycling"
J. Power Sources 303, 250-256 (2016).
Lab Members
Principal investigator
- Genki Kobayashi
- Chief Scientist
Contact Information
N505 Chemistry and Materials Physics Building
2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Email: genki.kobayashi [at] riken.jp