Wu Xiao-Tong, Peng Li-Juan, Xiao Kang, Li Nan, Liu Zhao-Qing
School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, 510006, P. R. China.
Chem Commun (Camb). 2021 May 27;57(43):5258-5261. doi: 10.1039/d1cc00460c.
Herein, we report a one-step synthesis of a hollow Fe-N/C catalyst via a hard-templating strategy, in which FeNx sites are well dispersed on the carbon sphere. In particular, we found an optimal iron ratio on the catalyst surface for an enhanced alkaline oxygen reduction reaction (ORR). The catalyst with a high specific surface area of 311.71 m2 g-1 exposes abundant electroactive sites that facilitate the adsorption of oxygen intermediates, thus exhibiting superior ORR activity in alkaline solution.
在此，我们报道了一种通过硬模板策略一步合成中空Fe-N/C催化剂的方法，其中FeNx位点均匀分散在碳球上。特别地，我们发现催化剂表面存在一个最佳铁比，可增强碱性氧还原反应（ORR）。该催化剂具有311.71 m2 g-1的高比表面积，暴露出丰富的电活性位点，有利于氧中间体的吸附，因此在碱性溶液中表现出优异的ORR活性。
