过电位
双金属片
电催化剂
化学
氮化物
锡
催化作用
钴
化学工程
过渡金属
钼
渗氮
纳米技术
电极
无机化学
氮气
材料科学
电化学
有机化学
物理化学
图层(电子)
工程类
作者
Xianhao Chen,Fuhe Le,Zhenjiang Lu,Dehuo Zhou,Haibin Yao,Wei Jia
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-07-03
卷期号:62 (28): 11207-11214
被引量:2
标识
DOI:10.1021/acs.inorgchem.3c01384
摘要
Transition metal nitrides are promising electrocatalysts for hydrogen evolution reaction (HER) owing to their Pt-like electronic structure. However, the harsh nitriding conditions greatly limit their large-scale applications. Herein, ultrafine Co3Mo3N-Mo2C (<1 nm)-decorated carbon nanofibers (Co3Mo3N-Mo2C/CNFs) were prepared by electrostatic spinning followed by pyrolysis treatment, in which the MoCo-MOF simultaneously serves as the precursor and nitrogen source. The generated synergistic interactions between Mo2C and Co3Mo3N significantly adjust the electronic structure of Mo2C and afford a fast charge transfer, which endows the resultant hybrid with superior HER electrocatalytic performances. Specifically, the as-obtained Co3Mo3N-Mo2C/CNF delivers a low overpotential of only 76 mV to achieve a current density of 10 mA cm-2 and superior durability with no obvious degradation for 200 h in acidic media. This performance outperforms most of the transition metal-based electrocatalysts reported to date. This work paves a new way for the design of catalysts with ultrasmall size and high efficiency in energy conversion.
科研通智能强力驱动
Strongly Powered by AbleSci AI