双面单原子桥与高效酸性水电解的接口:在牺牲耐腐蚀性之外的接口工程
Sunny Yadav1, Kai Chen2, Yong-Hua Cao3
1Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
Journal of colloid and interface science
|September 25, 2025
概括
我们开发了一种新的双面单原子桥电催化剂,可以增强和氧的进化反应. 这种耐腐蚀的催化剂在具有挑战性的高盐度环境中表现出卓越的性能,以实现可持续的气生产.
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
- 可持续能源 可持续能源
背景情况:
- 水电解是可持续的关键,但由于腐蚀和缓慢的动力学,催化剂在高盐度条件下扎.
- 现有的催化剂往往会退化,在苛刻的环境中限制它们的效率和寿命.
研究的目的:
- 设计和开发一种耐腐蚀的电催化剂,用于高度电解质中高效的和氧演化反应.
- 研究原子级接口工程在提高催化剂性能和稳定性方面的作用.
主要方法:
- 制造双面单原子桥梁 (DS-SAB) 电催化剂,使用 Janus N-doped 碳矩阵 (DS-FeSACs-C@NC) 上的 Fe 单个原子.
- 催化剂的结构和电化学性能对氧进化反应 (OER) 和进化反应 (HER) 的表征.
- 在0.1M H2SO4.4中评估催化剂稳定性和动力学.
主要成果:
- DS-SAB催化剂实现了创纪录的低超电位:HER的76mV和OER的253mV在10mA cm-2.2时.
- 催化剂表现出极好的稳定性,维持10 mA cm-2超过200小时.
- 优化的Fe-Nx/C和FeC位点促进了双向电子转移,调整吸附屏障并增强催化动力学.
结论:
- 开发的DS-SAB电催化剂为设计复杂电解质中强大的催化剂提供了一个新的范式.
- 原子尺度的接口控制对于克服电化学反应中的腐蚀和运动限制至关重要.
- 这种方法显著提升了高效和可持续的生产潜力.
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