当地拉力应变增强了电催化氨氧化反应的电催化氨氧化反应
Yongzhen Jin1,2,3, Yang Liu1,2,3, Ruyan Wu2,3,4
1School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Chemical communications (Cambridge, England)
|December 22, 2023
概括
将拉力应变应用于氧化 (Ni(OH) 2) 纳米薄膜显著增强了电催化氨氧化反应 (EAOR). 这种菌株加速过渡到氧化 (NiOOH),提高效率和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 电催化氨氧化反应 (EAOR) 对管理和能量转化至关重要.
- 氧化 (Ni(OH) 是一个有希望的催化剂,但它的效率和稳定性需要改进.
- 应变工程提供了一条调整催化剂性能的途径.
研究的目的:
- 为了研究局部拉伸应变对EAOR的Ni(OH) 2纳米板的影响.
- 为了了解应变如何影响Ni(OH) 2-to-NiOOH过渡.
- 为了评估应力Ni () 2的催化性能和耐久性.
主要方法:
- 合成的Ni () 2纳米板.
- 引入局部拉力应变.
- 氨氧化反应的电化学表征.
主要成果:
- 拉力应变加快了Ni(OH) 2到NiOOH的过渡.
- 对于EAOR的启动潜力减少了80mV.
- 电流密度和N2 faradaic效率翻了一番.
- 在160 mA cm-2下稳定运行1000小时.
结论:
- 局部拉力应变是一种有效的策略,可以提高EAOR的Ni(OH) 2电触媒性能.
- 应变工程显著提高了催化活性,选择性和长期稳定性.
- 这项工作提供了对过渡金属氧化物/氧化氧化物催化剂应变效应的见解.
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