期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 9, 页码 6427-6440出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.11.141
关键词
Selenization; Nickel; Oxygen evolution reaction; Electrocatalyst
资金
- Key Technology Project of State Grid Corporation of China [5400-201919487A-00-00]
- Fundamental Research Funds for the Central Universities [19lgpy20]
A selenium-doped hierarchical Ni-based electrocatalyst was fabricated in this study, showing improved oxygen evolution reaction performance through a hydrothermal process. Experimental results indicated that under specific conditions, favorable catalytic performance could be achieved.
Developing an oxygen evolution reaction electrocatalyst with low cost, abundant reserves and excellent performance is essential for the large scale application of renewable hydrogen energy. Herein, a selenium doped hierarchical Ni-based electrocatalyst was fabricated. Nickel nanosheet array (NNA) was firstly electrodeposited on stainless steel, and then selenium was doped in the NNA to form a hierarchical nanosheet structure via a hydrothermal process. The effect of hydrothermal temperature and duration on the OER performance were investigated. Results shown that after selenization at 140 degrees C for 12 h, the NNA electrodeposited for 30 min performed best OER performance with a current density of 50 mA cm-2 at overpotential of 365 mV and a small Tafel slope of about 34 mV dec-1. This work provides a valuable strategy to design high efficiency electrocatalysts and shows the universality of selenization for improving catalytic performance. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据