The 78th JSAP Autumn Meeting, 2017

Presentation information

Oral presentation

1 Interdisciplinary Physics and Related Areas of Science and Technology » 1.4 Energy conversion, storage, resources and environment

[6a-A401-1~9] 1.4 Energy conversion, storage, resources and environment

Wed. Sep 6, 2017 9:00 AM - 11:30 AM A401 (401)

Kazuya Oguri(Tokai Univ.), Kazuhiro Hara(Kyushu Univ.)

9:00 AM - 9:15 AM

[6a-A401-1] Non-Fermi liquids and the design principles of oxygen evolution catalysts

Shigeto Hirai1, Shunsuke Yagi2, Wei-Tin Chen3, Tomoya Ohno1, Hisao Suzuki4, Takeshi Matsuda1 (1.Kitami Inst. Tech., 2.Tokyo Univ., 3.Taiwan Univ., 4.Shizuoka Univ.)

Keywords:oxygen evolution reaction, strongly correlated electron materials, pyrochlore oxides

The oxygen evolution reaction (OER) is a crucial reaction for rechargeable metal-air batteries and direct solar water splitting. We report a remarkably low overpotential of ~150 mV at 10 mA/cm2disk in alkaline solutions using one of the non-Fermi liquids, Hg2Ru2O7. The outstanding OER performance is realized through the coexistence of localized d-bands with the metallic state that is unique to non-Fermi liquids.The principles of non-Fermi liquids could serve as new design criteria for highly efficient OER catalysts.