电催化剂
塔菲尔方程
过电位
催化作用
碳纤维
纳米颗粒
化学
材料科学
无机化学
化学工程
纳米技术
电化学
电极
有机化学
物理化学
复合材料
复合数
工程类
作者
Lejie Tian,Hui Liu,Xiuwen Yi,Xinyi Wang,Ling‐Yan Pang,Junqi Li
标识
DOI:10.1016/j.ijhydene.2023.03.217
摘要
As a catalyst, Mo2C has excellent hydrogen evolution reaction (HER) performance due to its platinum-like structure. However, insufficient exposure of active sites and excessive Mo–H binding energy of single Mo2C catalyst limits the improvement of HER performance. In this work, a nitrogen-doped porous carbon anchored Mo2C and CeO2 nanoparticles (Mo2C/CeO2/NC) for HER was manufactured by utilizing electronic fuel injection (EFI) technology. At the current density of 10 mA cm−2, it revealed a lower overpotential of 220 mV and a smaller Tafel slope value of 123 mV dec−1, and after 20 h of continuous tests and 2000 CV cycles, and exhibited excellent electrochemical stability. Owing to the synergetic effects between Mo2C, CeO2 and nitrogen-doped porous carbon, the intrinsic catalytic activity of the catalyst was greatly improved, and the electron/proton transport was accelerated, therefore the Mo2C/CeO2/NC catalyst exhibited excellent HER catalytic performance and superior durability. And this work was expected to promote the development of nonmetal-doped carbon-supported nanoparticle-based catalysts in the field of electrochemistry.
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