期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 38, 页码 16862-16872出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.03.181
关键词
CoSSeNi-Pt/C nanosheets; Hydrogen evolution reaction; Oxygen evolution reaction; Electrocatalysts
资金
- Natural Science Foundation of China [21805068, 21976123]
- Shanghai University Young Teacher Training Program [ZZyy16010]
- Shanghai Municipal Peak Plateau Construction Program [1021ZK191601008-A21]
Reasonable design and synthesis of hetero atom metal coordination compounds on the atomic scale can significantly improve the performance of catalysts. For example, CoSSeNi-Pt/C can greatly enhance the hydrogen evolution reaction (HER) activity and exhibit excellent long-time durability in alkaline media.
Reasonable design and synthesis of hetero atom metal coordination compounds on the atomic scale can significantly improve the performance of the catalysts. Herein, Pt/C (20%) is doped and inserted into the CoSSeNi catalyst through two steps of hydrothermal reaction and high temperature calcination process. Compared with the single metal Pt/C doped CoSSe-Pt/C, the bimetal doped CoSSeNi-Pt/C can greatly enhance the hydrogen evolution reaction (HER) activity. The optimized Pt content in CoSSeNi-Pt/C is 2.25 wt%, which achieves the optimal HER and OER activity. The OER and HER overpotentials of CoSSeNi-Pt/C-0.3 nanosheets at 10 mA cm(-2) only required 295 mV and 180 mV, respectively. During the accelerated durability test, in the presence of Pt/C dopants, CoSSeNi-Pt/C catalyst exhibited excellent long-time durability in alkaline media. Meanwhile, CoSSeNi-Pt/C showed much higher DOS near the Fermi level and the higher electron density near the Fermi level would facilitate the adsorption of adsorbates. (C) 2022 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