过电位
金属有机骨架
材料科学
电化学
化学工程
电催化剂
催化作用
分解水
无机化学
化学
电极
物理化学
有机化学
光催化
工程类
吸附
作者
Wei Jiang,Yu Jiang,Jia Wang,Yuanyuan Wu,Shi Zhou,Bo Liu,Hongji Li,Tianyu Zhou,Chunbo Liu,Guangbo Che
标识
DOI:10.1016/j.ijhydene.2022.06.217
摘要
Evidence shows that embedding metal-based hybrid into carbon matrix is an up-and-coming method to improve the efficiency and decrease the cost of electrocatalysts. Herein, by using a metal-organic framework (MOF) with 4,4-bipyridine and 2,5-thiophenedicarboxylic acid as a precursor, a CoP/Co3S4 hybrid embedded into N, S, O-doped carbon sheets (CoP/Co3S4@NSOC) was constructed through pyrolysis and phosphorization processes. The lamellar morphology, hetero-atom doping, and graphite carbon were favorable for fast electron and mass transfer. Moreover, the strong intrinsic activities of CoP and Co3S4 promoted electrocatalytic performance. In the electrochemical experiments, CoP/Co3S4@NSOC showed the lowest overpotential of 132 [email protected] mA cm−2 for hydrogen evolution reaction (HER) among all the precursors. In addition, the electrocatalytic activity and structure of CoP/Co3S4@NSOC exhibited long-term stability over 60 h. The present work provides a feasible strategy for the construction of robust MOF-derived electrocatalysts.
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