原子Ru介导的自发异构接口相位过渡使对联电解中的安培级催化性能成为可能
Zhouhong Yu1, Xiaonan Zheng2, Cong Lin1
1School of Chemistry and Chemical Engineering, State Key Laboratory of Bio-based Fiber Materials, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China.
Angewandte Chemie (International ed. in English)
|January 14, 2026
概括
这项研究表明,单原子如何在硫化催化剂中触发相变,显著提高持续配对电合成的电催化性能. 优化的催化剂在酸盐-甘油联合电解中实现了高效率和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 阶段过渡调节是优化电催化剂特性的关键.
- 原子尺度接口相位转换与催化性能之间的联系尚未得到充分理解.
研究的目的:
- 为了研究Co3S4/Co异构结构的异原子界面相变.
- 了解单原子在触发这种转变中的作用及其对催化性能的影响.
- 为持续配对电合成开发一种高性能催化剂.
主要方法:
- 制造的单原子鲁丁定硫化/异构的纳米片 (RuSA-Co9S8/Co-T).
- 利用理论计算和现场光谱来确认相变并分析催化机制.
- 在膜电极组装电解剂中测试了催化剂,用于酸盐-甘油联合电解.
主要成果:
- 通过由单原子触发的从Co3S4/Co到Co9S8/Co的热诱导相位过渡实现了安培级的催化性能.
- RuSA-Co9S8/Co-T催化剂证明了优化中间形成动力学和降低速度决定步骤的能量障碍.
- 在氨和酸盐生产中表现出高的平均法拉第效率 (>90%),产量分别高达95.83 mg h-1 cm-2和567.38 mg h-1 cm-2.
- 在 500 mA cm-2.2 的工业电流密度下,在 100 小时内展示了稳定的运行.
结论:
- 单原子有效地诱导了硫化催化剂中有利的界面相位过渡.
- 开发的RuSA-Co9S8/Co-T催化剂为高效和持续的配对电合成提供了一个有前途的解决方案.
- 这项研究提供了关键的见解,通过控制原子尺度相位过渡来设计先进的催化剂.
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