A general method to construct single-atom catalysts supported on N-doped graphene for energy applications,Journal of Materials Chemistry A

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A general method to construct single-atom catalysts supported on N-doped graphene for energy applications
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020/02/17 , DOI: 10.1039/c9ta11715f
Linghui Liu _{1,

2,

3,

4,

5} , Song Liu _{4,

5,

6,

7,

8} , Lu Li _{4,

5,

6,

7,

8} , Haifeng Qi _{4,

5,

6,

7,

8} , Hongbin Yang _{9,

10,

11,

12} , Yanqiang Huang _{4,

5,

6,

7,

8} , Zidong Wei _{1,

2,

3,

4} , Li Li _{1,

2,

3,

4} , Jinming Xu _{4,

5,

6,

7,

8} , Bin Liu _{9,

10,

11,

12}

Affiliation

Single atom catalysts (SACs) with atomically dispersed catalytic sites have shown great promise for energy related chemical reactions. In this work, a facile and general approach to synthesize a large variety of transition metal (Fe, Ni, Co, Cu, etc.) SACs with a large surface area and a hierarchical structure using layered montmorillonite (MMT) as the structural template was developed. Specifically, the as-synthesized nickel SAC (Ni-SAC) exhibits outstanding performance toward electrochemical CO₂ reduction, achieving CO₂-to-CO conversion with more than 90% faradaic efficiency in the potential range from −0.6 to −1.1 V vs. RHE, and the iron SAC (Fe-SAC) displays excellent ORR activity, with the half-wave potential surpassing that of the state-of-the-art Pt/C catalyst.

中文翻译：

构造用于能源应用的N掺杂石墨烯上负载的单原子催化剂的一般方法

具有原子分散的催化位点的单原子催化剂（SAC）对于与能量有关的化学反应显示出巨大的希望。在这项工作中，使用层状蒙脱土（MMT）作为结构模板，合成了具有大表面积和分级结构的多种过渡金属（Fe，Ni，Co，Cu等）SAC的简便且通用的方法是发达。具体而言，合成后的镍SAC（Ni-SAC）在电化学CO ₂还原方面表现出出色的性能，在-0.6至-1.1 V vs.的电势范围内，以90％的法拉第效率实现了CO ₂到CO的转化。 RHE和SAC铁（Fe-SAC）具有出色的ORR活性，其半波电势超过了最新的Pt / C催化剂。

更新日期：2020-04-01

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