Overall water splitting by photoelectrochemical cells consisting of (ZnSe)0.85(CuIn0.7Ga0.3Se2)0.15 photocathodes and BiVO4 photoanodes

Tomohiro Higashi; Hiroyuki Kaneko; Tsutomu Minegishi; Hiroyuki Kobayashi; Miao Zhong; Yongbo Kuang; Takashi Hisatomi; Masao Katayama; Tsuyoshi Takata; Hiroshi Nishiyama; Taro Yamada; Kazunari Domen

doi:10.1039/C7CC06637F

Overall water splitting by photoelectrochemical cells consisting of (ZnSe)_0.85(CuIn_0.7Ga_0.3Se₂)_0.15 photocathodes and BiVO₄ photoanodes†

Tomohiro Higashi,

^a Hiroyuki Kaneko,^a Tsutomu Minegishi,

^ab Hiroyuki Kobayashi,^c Miao Zhong,^a Yongbo Kuang,^a Takashi Hisatomi,

^a Masao Katayama,^a Tsuyoshi Takata,

^a Hiroshi Nishiyama,^a Taro Yamada^a and Kazunari Domen

*^a

Author affiliations

* Corresponding authors

^a Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
E-mail: domen@chemsys.t.u-tokyo.ac.jp

^b Precursory Research for Embryonic Science and Technology (PREST), Japan Science and Technology Agency (JST), 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

^c Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem), 2-11-9 Iwamotocho, Chiyoda-ku, Tokyo 101-0032, Japan

Abstract

The design of photoelectrochemical (PEC) cell structures that mitigate challenges related to mass transfer is the key to achieving efficient hydrogen production. A PEC cell based on an integrated photoelectrode incorporating (ZnSe)_0.85(CuIn_0.7Ga_0.3Se₂)_0.15 strips and BiVO₄ strips exhibited 1.0% solar-to-hydrogen energy conversion efficiency even without stirring the electrolyte solution.

Chemical Communications

Overall water splitting by photoelectrochemical cells consisting of (ZnSe)_0.85(CuIn_0.7Ga_0.3Se₂)_0.15 photocathodes and BiVO₄ photoanodes†

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Overall water splitting by photoelectrochemical cells consisting of (ZnSe)_0.85(CuIn_0.7Ga_0.3Se₂)_0.15 photocathodes and BiVO₄ photoanodes

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