Boosting the hydrogen evolution of layered double hydroxide by optimizing the electronic structure and accelerating the water dissociation kinetics
Chemical Engineering Journal(2023)
摘要
Designing a highly efficient and durable electrocatalyst for hydrogen evolution reactions (HER) is of great significance to promote the development of green hydrogen energy. This work reports a vertical-aligned electrocatalyst of Cu2O/CoCu-LDH inlaid bilayer nanosheets that achieve excellent alkaline HER performance with a low overpotential of 96 mV at 10 mA cm-2 and a low Tafel slope of 76.8 mV dec- 1. Notably, Cu2O/CoCu-LDH outperforms Pt/C at a practical current density of 600 mA cm-2. The structural characterizations and theory calculations revealed that the superior HER activity of Cu2O/CoCu-LDH is due to the distinctive morphology, optimized electronic structure and accelerated water dissociation kinetics. Remarkably, the Cu2O/CoCu-LDH acted as the cathode in alkaline Zn-H2O cell demonstrating the potential applications for H2 generation and electricity energy simultaneously. Our work can guide the design of LDH-based electrocatalysts with outstanding HER performance.
更多查看译文
关键词
Layered double hydroxide,Hydrogen evolution reaction,Zn-H 2 O cell,Electronic structure,Water dissociation kinetic
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