电催化剂
双功能
分解水
材料科学
析氧
异质结
电解
催化作用
电极
化学工程
电解水
纳米技术
化学
无机化学
电化学
光电子学
电解质
物理化学
光催化
有机化学
工程类
作者
Kaixun Li,Dongmei Feng,Yun Tong
出处
期刊:Chemsuschem
[Wiley]
日期:2022-06-15
卷期号:15 (15)
被引量:22
标识
DOI:10.1002/cssc.202200590
摘要
The development of highly active bifunctional electrocatalysts for overall water splitting is of significant importance, but huge challenges remain. The key element depends on engineering the electronic structure and surface properties of material to achieve improved catalytic activity. Herein, a hierarchical nanowire array of metal sulfides heterostructure on nickel foam (FeCoNiSx /NF) was designed as a novel type of hybrid electrocatalyst for overall water splitting. The hybrid structure endowed plenty of catalytic active sites, strong electronic interactions, and high interfacial charge transferability, leading to superior bifunctional performance. As a result, the FeCoNiSx /NF catalyst delivered low overpotentials of 97 and 260 mV at the current density of 50 mA cm-2 for hydrogen and oxygen evolution reactions, respectively. Moreover, the FeCoNiSx /NF-based water electrolyzer exhibited a small potential of 1.57 V for a high current density of 50 mA cm-2 . These results indicate the promising application potential of FeCoNiSx /NF electrode for hydrogen generation. This work provides a new approach to develop robust hybrid materials as the highly active electrode for electrocatalytic water splitting.
科研通智能强力驱动
Strongly Powered by AbleSci AI