An efficient vanadium/cobalt metaphosphate electrocatalyst for hydrogen and oxygen evolution in alkaline water splitting. Issue 18 (5th August 2022)

• Record Type: Journal Article
• Authors: Xu, Kai; Guo, Wen; Zhang, Hongyan; Zhou, Hao; Zhu, Zizheng; Zhou, Yilin; Liang, Wenjie; Yu, Tingting; Zhao, Hong; He, Maoshuai; Yang, Tao
• Is Part Of: Inorganic chemistry frontiers. Volume 9:Issue 18(2022)
• Page Start: 4808
• Page End: 4816
• Publication Date: 2022-08-05
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2qi01238c
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : A Co-based electrocatalyst was synthesized through a facile soaking–phosphating method, which requires small overpotentials of 96 mV and 368 mV for obtaining 10 mA cm −2 in hydrogen evolution and 100 mA cm −2 in oxygen evolution, respectively. Abstract : Hydrogen, which can contribute to the goal of carbon neutrality, is expected to replace conventional fossil fuels in the near future. Electrochemical water splitting is a clean hydrogen production technology, but its industrialization is limited by the efficiency and cost of catalysts. In this work, an electrocatalyst containing cobalt metaphosphate and vanadium metaphosphate was synthesized through a facile soaking–phosphating method. The catalyst requires small overpotentials of 96 mV and 205 mV for obtaining 10 mA cm −2 and 50 mA cm −2 in hydrogen evolution, and 368 mV for obtaining 100 mA cm −2 in oxygen evolution, respectively. This achievement sheds light on a high-performance, low-cost catalyst for water splitting.