Porous amorphous NiFeOx/NiFeP framework with dual electrocatalytic functions for water electrolysis

JOURNAL OF POWER SOURCES

卷:428

Article

Hu, Fei^1,2  Zhang, Yan⁴  Shen, Xiaochen¹  Tao, Jingying⁵  Yang, Xiaowei⁵  Xiong, Yujie³  Peng, Zhenmeng¹ 

[1] Univ Akron, Dept Chem & Biomol Engn, Akron, OH 44325 USA

[2] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

[3] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, IChEM Collaborat Innovat Ctr Chem Energy Mat, Sch Chem & Mat Sci, Hefei 230026, Anhui, Peoples R China

[4] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[5] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China

关键词: Water splitting electrocatalyst;    Dual function;    3D nanoporous framework;    Macro-conductivity;    Mott-Schottky structure;   

DOI  :  10.1016/j.jpowsour.2019.04.098

来源: Elsevier

【 摘 要 】

An efficient bulk electrocatalyst is appealing to advance the efficiency of water electrolysis. In this study, we report a function-integrated bulk NiFeOx@NiFeP catalyst that exhibits excellent electrocatalytic activity and stability properties. This new catalyst possesses multiple advantages including three-dimensional (3D) nano-porous framework structure, excellent macro-conductivity, and unique Mott-Schottky architecture, which offers stereochemical and energetic flexibility to interact with reactants with multiple functions including large surface area, fast mass and charge transfers, and favorable catalysis kinetics. The bulk NiFeOx@NiFeP can serve simultaneously as catalyst and current collector, and catalyze both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), as demonstrated with active and durable overall water splitting performances.

【 授权许可】

Free