内极化场诱导的氧化物溢出效应对于工业水分电解器的工业水分电解器
Jingyi Xie1, Fuli Wang1, Yanan Zhou1
1State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China.
Nano-micro letters
|November 30, 2023
概括
一种新的Ni2P/FeP2异构结构通过促进基溢出来增强氧演化反应 (OER). 这种催化剂设计提高了OER的活性和稳定性,特别是在离子交换膜水电解器中.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 有效的氧化演化反应 (OER) 催化对于能量转化技术至关重要.
- 催化剂设计面临的挑战在于基吸附和保持活跃点供应.
- 基吸附是OER中形成氧中间体的关键.
研究的目的:
- 开发一个负担得起的催化剂,有效的开放式资源资源.
- 在Ni2P/FeP2异构中研究基溢出 (HOSo) 的机制.
- 在离子交换膜水电解器 (AEMWE) 中提高OER性能.
主要方法:
- 一个Ni2P/FeP2异构催化剂的合成.
- 对内部极化场 (IPF) 的研究诱导了HOSo.
- 对OER活性和稳定性的电化学表征.
- 在AEMWE中使用低度电解质进行测试.
主要成果:
- Ni2P/FeP2异构表现出IPF,使得面向的HOSo.成为可能.
- HOSo激活Ni位点并优化氧中间体的反应路径.
- 达到242mV的OER活动与100mA cm-2的RHE相比,稳定性>100小时.
- 在AEMWE中以1.88V的电压表现出1A cm-2,稳定性>50h.
结论:
- Ni2P/FeP2异构结构有效地利用HOSo进行增强的OER.
- 由IPF驱动的HOSo机制为催化剂设计提供了一个新的策略.
- 催化剂对高效和稳定的水电解有显著的前景.
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