Improved Oxygen Evolution Kinetics and Surface States Passivation of Ni-Bi Co-Catalyst for a Hematite Photoanode

Engineering

Jijie Zhang¹  Shanshan Liu¹  Tuo Wang¹  Chengcheng Li¹  Jinlong Gong¹  Ke Dang¹ 

[1] Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

关键词: Nickel-borate;    Hematite;    Oxygen evolution reaction;    Co-catalyst;   

DOI  :  10.1016/J.ENG.2017.03.005

来源: DOAJ

【 摘 要 】

This paper describes the combinational surface kinetics enhancement and surface states passivation of nickel-borate (Ni-Bi) co-catalyst for a hematite (Fe2O3) photoanode. The Ni-Bi-modified Fe2O3 photoanode exhibits a cathodic onset potential shift of 230 mV and a 2.3-fold enhancement of the photocurrent at 1.23 V, versus the reversible hydrogen electrode (RHE). The borate (Bi) in the Ni-Bi film promotes the release of protons for the oxygen evolution reaction (OER).

【 授权许可】

Unknown