Amorphous 3D pomegranate-like NiCoFe nanoassemblies derived by bi-component cyanogel reduction for outstanding oxygen evolution reaction  

作　　者：Zi-Juan Wang Mi-Xue Jin Lu Zhang Ai-Jun Wang Jiu-Ju Feng 

机构地区：[1]Key Laboratory of the Ministry of Education for Advanced Catalysis Materials,College of Chemistry and Life Sciences,College of Geography and Environmental Sciences,Zhejiang Normal University,Jinhua 321004,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2021年第2期260-267,I0009,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 21805245);the Zhejiang Public Welfare Technology Application Research Project (LGG19B050001);the National Students’ Innovation and Entrepreneurship Training Program of Zhejiang Normal University (201910345032, Z.J. Wang)。

摘　　要：As a representative type of self-supported templates, cyano-bridged cyanogels provide ideal plateaus for synthesis of three-dimensional(3 D) nanostructures. Herein, 3 D pomegranate-like Fe-doped NiCo nanoassemblies(3 D PG-NiCoFe NAs) were synthesized via facile one-step bi-component cyanogel reduction with NaBH_4 as the reducing agent. Specifically, the influence of the incorporated Fe amount was carefully investigated by finely adjusting the feeding molar ratios of the Ni/Co/Fe atoms in the precursors.By virtue of the unique structure and enriched oxygen vacancies originated from well-modulated electronic structures, the 3 D PG-NiCoFe-211 NAs exhibited outstanding electrocatalytic performances for oxygen evolution reaction(OER) in alkaline solution, outperforming commercial RuO_2 catalyst. The current incorporation of foreign metal atom into host material provides some valuable insights into design and synthesis of metal-based nanocatalysts for constructing practical water splitting devices.

关 键 词：Transition-metal-based nanocatalysts Cyanogel Three-dimensional pomegranate-like NANOASSEMBLIES Oxygen vacancy Oxygen evolution reaction 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[一般工业技术—材料科学与工程] TB383.1