Uniformly bimetal-decorated holey carbon nanorods derived from metal-organic framework for efficient hydrogen evolution

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: ARTICLES
• 页码范围: 170-178
• 页数: 9页
• 语种: 英文

摘要

The hydrogen evolution reaction(HER)as a fundamental process in electrocatalysis plays a significant role in clean energy technologies.For an energy-efficient HER,it demands an effective,durable,and low-cost catalyst to trigger proton reduction with minimal overpotential and fast kinetics.Here,we suc-cessfully fabricate a highly efficient HER catalyst of N-C/Co/Mo2C holey nanorods with Co//-Mo2C nanoparticles uniformly embedded in nitrogen-doped carbon(N-C/Co/Mo2C)by pyrolyzing the molybdate-coordinated zeolitic imidazolate framework(ZIF-67/MoO4-)holey nanorods,which result from the reaction between CoMoO4 and MeIM in a methanol/water/triethylamine mixed solution.The uniform distribution of MoO42-in the ZIF-67/MoO4-enables Co//β-Mo2C nanoparticles to be well-distributed within nitrogen-doped carbon holey nanorods.This synthetic strategy endows the N-C/Co/Mo2C catalyst with uniformly decorated bimetal,thus attaining excellent HER electrocatalytic activities with a small overpotential of 142.0 mV at 10 mA cm-2 and superior stability in 1.0 mol L-1 KOH aqueous solution.