通过芬顿类效应腐蚀合成自支持的NiCoFe(OH) x,以实现高效的水氧化
Huajun Zhou1, Yuzhen Zhang1, Chenxi Shi2
1School of Materials Science and Engineering, North University of China, Taiyuan 030051, PR China; Institute of Advanced Energy Materials and System, North University of China, Taiyuan 030051, PR China.
Journal of colloid and interface science
|March 3, 2024
概括
新的NiCoFe(OH) x纳米薄膜在Ni-Fe泡上有效催化了氧气演化反应,用于水分裂. 这种催化剂在模拟和真实海水中表现出色,为可负担的燃料生产铺平了道路.
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:
- 高效和成本效益的催化剂对于电化学水分裂产生燃料至关重要.
- 为氧化演化反应 (OER) 开发强大的电催化剂对于推进水电解技术至关重要.
研究的目的:
- 为高效氧化演化反应 (OER) 催化,在Ni-Fe泡 (NFF) 上合成和表征新的NiCoFe(OH) x纳米薄膜.
- 在模拟和真实海水中评估合成材料的催化性能.
主要方法:
- 在NFF上合成NiCoFe(OH) x纳米薄膜,用于NFF腐蚀的CO2+和S2O82-之间的芬顿式反应.
- 材料的多孔结构和电化学性能的表征,包括超电位和Tafel斜率.
- 在水电解电池中用Pt/C计数电极测试催化剂.
主要成果:
- 尼科菲 (NiCoFe) (OH) x/NFF催化剂呈现出多孔,相互连接的纳米板结构,增强了电荷传输.
- 在10 mA cm-2时达到200 mV的低超电位,在100 mA cm-2时达到262 mV,Tafel斜率为53.25 mV dec-1.
- 在模拟 (267 mV 100 mA cm-2) 和真实海水 (294 mV 100 mA cm-2) 中表现出极好的性能,在110小时内保持稳定.
结论:
- 尼科菲 (NiCoFe) (OH) x/NFF催化剂在氧化演化反应中表现出高效率和稳定性,这是由于其独特的结构和Ni,Co和Fe离子的协同作用.
- 这一发展为通过水电解实现经济高效的生产提供了有希望的途径,特别是在具有挑战性的海洋环境中.
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