在2D-Nitro-Oxygeneous Carbon上为高负荷过渡金属单个原子的一般热解作为高效的ORR电催化剂
Teera Butburee1,2, Jitprabhat Ponchai1, Pongtanawat Khemthong1
1National Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand.
ACS applied materials & interfaces
|February 17, 2024
概括
我们开发了一种简单,可扩展的方法,用于在氧化碳支器上合成单原子催化剂 (SAC). 这些催化剂表现出高金属负载和在氧降解反应 (ORR) 中的出色性能.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 单原子催化剂 (SAC) 提供了同质和异质催化剂的综合优势.
- 在大规模,高金属负载的SAC的成本效益合成方面仍然存在挑战.
研究的目的:
- 开发一种简单,可扩展和无溶剂的方法来合成SACs.
- 研究这些SACs在氧降解反应 (ORR) 中的催化性能.
主要方法:
- 在二维的氧化碳 (2D-NOC) 基板上对金属前体进行单步热解.
- 合成催化剂的表征 (M1-2D-NOC).
- 对ORR的催化活性进行电化学评估.
主要成果:
- 通过可扩展的,单阶段的热解实现了高金属负载 (5.2-15.9%重量%) 的SAC (M1-2D-NOC).
- 证明了令人印象深刻的ORR活性和稳定性,例如Fe1-2D-NOC,其发病潜力为0.985V.
- 确定FeO-N3O结构是增强电荷转移和ORR性能的关键.
结论:
- 一步式热解法是一种通用且可扩展的方法,用于生产高性能SAC.
- 在2D-NOC上独特的FeO-N3O活性位支持显著提高ORR催化活性.
- 这些SAC对能源转换设备的应用非常有前途.
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