晶体金属化物涂层无形氧化铁氧化 (FeOOH) 与氧气空缺作为高活性和稳定的氧气进化催化剂在性海水在高电流密度
Wei Yan1, Zhuang Shi2, Hao Feng2
1School of Science, Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Jiangsu Ocean University, Lianyungang, Jiangsu 222005, PR China; School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
Journal of colloid and interface science
|April 19, 2024
概括
一种新的化方法创造了双重Ni12P5/FeOOH催化剂,增强了高效氧演化反应 (OER) 的氧气空缺. 这种催化剂在性和海水条件下表现出色的稳定性和性能.
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
- 催化剂是一种催化剂.
背景情况:
- 有效的氧化演化反应 (OER) 催化剂对于可持续能源技术至关重要.
- 在海水等具有挑战性的电解质中开发稳定,高性能的OER催化剂仍然是一个重大障碍.
- 异构结构为改善催化活性提供协同效应.
研究的目的:
- 为OER合成一种新的结晶形态 (c-a) 异构催化剂.
- 为了提高催化剂内的氧气空置度,以提高性能.
- 为了评估催化剂在性和模拟海水电解质中的活性和稳定性.
主要方法:
- 在泡 (NF) 上构建Ni12P5/FeOOH异构的酸化方法.
- 电化学表征包括电流密度和超电位测量.
- 在现场的拉曼和现场的X射线光电子光谱 (XPS) 用于机械研究.
主要成果:
- Ni12P5/FeOOH/NF催化剂实现了高电流密度 (500 mA cm-2) 的低超电位 (288 mV 在1M KOH, 365 mV 在1M KOH + 海水).
- 催化剂表现出很好的长期稳定性,在150小时运行后,超电位的增加最小.
- 现场和现场分析显示,在OER过程中,OER重构成富含氧空位 (Fe/Ni) 的OOH阶段,增强了催化活性.
结论:
- c-a异构结构设计和增强的氧气空缺是优越OER性能的关键.
- 12P5的保护层和超性有助于催化剂的稳定性.
- 动态重新配置到富含氧气空位的阶段是改善OER动力学的主要驱动力.
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