Zhang Min, He Xun, Dong Kai, Zhang Hui, Yao Yongchao, Yang Chaoxin, Yue Meng, Sun Shengjun, Sun Yuntong, Zheng Dongdong, Luo Yongsong, Liu Qian, Li Na, Tang Bo, Liu Jun, Sun Xuping
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China.
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
Chem Commun (Camb). 2023 Aug 8;59(64):9750-9753. doi: 10.1039/d3cc02667a.
The presence of chlorine species in seawater can cause severe anode corrosion, highlighting the critical need for the design of efficient and robust electrocatalysts towards the oxygen evolution reaction (OER) for hydrogen production. Herein, we present a chromium doped cobalt carbonate hydroxide nanowire array on nickel foam (Cr-CoCH/NF) as an effective OER electrocatalyst in seawater. In alkaline conditions, Cr-CoCH/NF exhibits a low overpotential of 450 mV to achieve 500 mA cm, surpassing that of CoCH/NF (614 mV). Additionally, it demonstrates 200 h of continuous oxygen evolution testing.
海水中氯物种的存在会导致严重的阳极腐蚀，这凸显了设计高效且耐用的电催化剂用于析氧反应（OER）以制氢的迫切需求。在此，我们展示了一种负载在泡沫镍上的铬掺杂氢氧化碳酸钴纳米线阵列（Cr-CoCH/NF），它是海水中一种有效的OER电催化剂。在碱性条件下，Cr-CoCH/NF实现500 mA cm的电流密度时过电位低至450 mV，超过了CoCH/NF（614 mV）。此外，它还展示了200小时的连续析氧测试。
