Nickel-carbonate nanowire array： An efficient and durable electrocatalyst for water oxidation under nearly neutral conditions

作     者：Yuyao Ji Min Ma Xuqiang Ji Xiaoli Xiong Xuping Sun 

作者机构：College of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 China College of Chemistry Sichuan University Chengdu 610064 China Key Lab of Process Analysis and Cont ol of Sichuan Universities Yibin University Yibin 644000 China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2018年第12卷第3期

页      面：467-472页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：国家自然科学基金 the Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials the Key Lab of Process Analysis and Control of Sichuan Universities 

主　　题：water oxidation NiCO3/NF nearly neutral conditions superior activity electocatalyst 

摘      要：It is highly attractive but still remains a great challenge to develop an efficient electrocatalyst for oxygen evolution reaction under nearly neutral conditions. In this work, we report the transformation of Ni3S2 nanowire array on nickel foam into the amorphous nickel carbonate nanowire array on nickel foam （NiCO3/NF）. The resulting NiCO3/NF shows high electrocatalytic activity towards water oxidation and affords current density of 50 mA. cm-2 at overpotential of 395 mV in 1.0 mol·L^-1 KHCO3. Moreover, this NiCO3/NF is also durable with a long-term electrochemical durability of 60 h. This catalyst electrode achieves a high turnover frequency of 0.21 mol O2·s^-1 at the overpotential of 500 mV.