通过异质核微环境的特定场所协同作用,为氧气还原反应进行原子编辑
Siqi Ji1, Yu-Hao Wang2, Hongxue Liu1
1State Key Laboratory of Continental Shale Oil, Joint International Research Laboratory of Advanced Chemical Catalytic Materials & Surface Science, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China.
Nature communications
|November 27, 2025
概括
这项研究介绍了铁--碳催化剂的新型原子编辑策略,提高了它们在氧降解反应中的性能. 新的Fe-Co催化剂表现出高能效空气电池的卓越活性和稳定性.
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:
- 铁--碳催化剂对氧降解反应 (ORR) 显示出希望.
- 在ORR催化剂中实现高活性和长期稳定性是具有挑战性的.
- 精确控制活点微环境对于催化剂设计至关重要.
研究的目的:
- 为设计先进的ORR催化剂开发一个微环境原子编辑策略.
- 为了研究ORR的异核三原子Fe和Co位点 (Fe1Co2/NC) 的性能.
- 探索开发的催化剂在可充电的空气电池中的应用.
主要方法:
- 一个基合碳基质的合成支持Fe1Co2N7O1催化剂.
- 催化剂的原子结构和电子性质的表征.
- 在ORR (性和酸性条件) 中对催化剂的活性和稳定性的电化学评估.
- 使用催化剂制造和测试准固态空气电池.
主要成果:
- Fe1Co2 / NC催化剂表现出增强的ORR活性,半波电位为0.94V (性) 和0.88V (酸性).
- 铁和原子之间的轨道杂交优化了d带中心,改善了活性和稳定性.
- 催化剂在准固态气电池中表现出色,实现了高功率密度 (282.7 mW cm-2) 和运行稳定性.
- 优化金属-酸盐相互作用和加强金属-N结合有助于竞争活动和稳定性.
结论:
- 微环境原子编辑策略对于设计低核性催化剂是有效的.
- Fe1Co2N7O1催化剂为节能电池的商业催化剂提供了一个有希望的替代品.
- 对催化剂活性位点的原子级控制是推进ORR催化和储能解决方案的关键.
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