AbstractSection Highlights

• Secondary-atom-doped strategy was proposed to synthesize single-atom electrocatalyst.

• The increase in both the density of active sites and their intrinsic activity was achieved simultaneously.

• The resultant single-atom catalyst shows outstanding ORR activity in acidic media.

中文翻译：

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二次原子掺杂使鲁棒的Fe–N–C单原子催化剂具有增强的氧还原反应

摘要部分重点

• 提出了二次原子掺杂策略来合成单原子电催化剂。

• 活性位点密度及其固有活性的增加是同时实现的。

• 所得的单原子催化剂在酸性介质中显示出优异的ORR活性。