基肯德尔效应驱动的接口工程促进水分离为双位 H2O2电合成同时在阳极和阴极的水分离
Xin-Hao Cai1,2, Lu Peng1,2, Ping Zhu1,2
1Shenzhen Key Laboratory of Ecological Remediation and Carbon Sequestration, Key Laboratory of Microorganism Application and Risk Control, Ministry of Ecology and Environment, State Key Laboratory of Regional Environment and Sustainability, Institute of Environment and Ecology, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P.R. China.
Angewandte Chemie (International ed. in English)
|August 19, 2025
概括
可再生能源现在可以使用一种新的NiZnOx-C催化剂直接为过氧化 (H2O2) 电合成提供动力. 这种双站点催化剂有效地执行氧降解和水氧化反应,以节省成本生产H2O2.
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
- 可再生能源是可再生能源的来源.
背景情况:
- 将可再生能源直接整合到H2O2电合成中是减少能源损失和成本的关键.
- 可再生能源的间歇性需要双位点催化剂,以实现高效的双电子氧降解 (2e-ORR) 和水氧化 (2e-WOR).
研究的目的:
- 开发一种新型的催化剂,用于高效的H2O2电合成,直接由间歇性可再生能源提供动力.
- 使用Kirkendall效应设计催化剂接口,以提高催化活性.
主要方法:
- 利用Kirkendall效应来设计接口,并构建一个具有暴露 (100) 面的NiZnOx-C催化剂.
- 研究了异构集群NiOx在诱导氧气空缺和内置电场以激活水中的作用.
- 在模拟的交流和直流电流下采用连续流反应器,以实现稳定的催化剂运行.
主要成果:
- 通过阴极2e-ORR实现了高度H2O2 (33987毫克L-1) 的快速合成.
- 证明了稳定的2e-ORR/WOR合4小时.
- 在直流下达到150.9%的法拉第效率.
结论:
- 通过Kirkendall效应设计的NiZnOx-C催化剂使高效的H2O2电合成成为可能.
- 催化剂促进间歇性可再生能源直接集成到H2O2生产系统中.
- 接口工程为开发先进的电催化剂提供了一个可行的策略.
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