A Highly Efficient Heterostructure Nanorod Bifunctional Electrocatalyst for Realizing Enhanced Overall Water Splitting at a Large Current Density
Journal of materials chemistry A(2023)
摘要
Exploring efficient, low cost and stable electrocatalysts working at large current densities is crucial for upgrading the current industrial electrochemical water splitting. Herein, a novel FeS2/Fe-Ni3S2 heterostructure was successfully prepared via a simple one-step in situ hydrothermal vulcanization using F- regulation engineering. The FeS2/Fe-Ni3S2 heterostructure array exhibits low overpotentials for both the OER (180 mV @ 10 mA cm(-2) and 300 mV @ 1 A cm(-2)) and the HER (105 mV @ 10 mA cm(-2) and 344 mV @ 1 A cm(-2)) with high stability operating at 1 A cm(-2) for 1000 h. In addition, the water-splitting system only needs 1.5 V to reach 10 mA cm(-2) and shows prolonged stability of more than 1200 h at 1 A cm(-2). The DFT calculations show that the electrons redistribute at the interface and favor the chemisorption of hydrogen and oxygen-containing intermediates. This work highlights a novel, low cost and practical electrode for industrial electrochemical water splitting.
更多查看译文
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要