The self-passivation mechanism in degradation of BiVO4 photoanode

• Main Authors: Yao, Xin, Zhao, Xin, Hu, Jun, Xie, Huiqing, Wang, Danping, Cao, Xun, Zhang, Zheng, Huang, Yizhong, Chen, Zhong, Sritharan, Thirumany
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Materials; Electrochemical Energy Storage; Electrochemical Energy Conversion
• Online Access: https://hdl.handle.net/10356/141990
• Institution: Nanyang Technological University

BiVO4 is a promising photoanode material for solar-assisted water splitting in a photoelectrochemical cell but has a propensity to degrade. Investigations carried out here in 0.1 M Na2SO4 electrolyte showed that degradation is by dissolution of V in the electrolyte while Bi is retained on the anode...