通过CO2电解的拓性溶解诱导的界面依赖活性位点的量化
Yuxiang Shen1, Shuo Wang1, Xiaoqin Chen1,2
1State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Journal of the American Chemical Society
|August 21, 2025
概括
这项研究量化了固体氧化物电解细胞中二氧化碳电解的现场溶解金属纳米粒子. 用Fe促进的接口显示性能与接口周围线性相关.
科学领域:
- 材料科学
- 电化学
- 催化剂
背景情况:
- 通过现场溶解形成的支持金属纳米粒子对二氧化碳电解有希望.
- 量化这些界面部位的内在活动是具有挑战性的.
研究的目的:
- 量化分析出溶过程并将接口部位正常化为内在活动.
- 为控制的纳米颗粒排泄量量身定制CoFe/La0.6Sr0.4Cr0.9Co0.1O3-δ (LSCC) 接口.
主要方法:
- 控制溶解CoFe纳米粒子覆盖的拓性离子交换策略.
- 用X射线吸收光谱和莫斯尔光谱来研究Fe的作用.
- 界面参数与二氧化碳电解性能之间的定量相关性分析.
主要成果:
- 铁度调节精确地控制了被溶解的CoFe纳米粒子覆盖面.
- 可以促进溶解.
- 二氧化碳电解性能与CoFe/LSCC接口周围线性正相关.
结论:
- 在最佳界面周长为29.3μm μm-2时,达到1.73A cm-2的峰值性能.
- 为二氧化碳电解的金属/氧化物催化剂提供了洞察力.
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