Ultrafine molybdenum carbide nanoparticles supported on nitrogen doped carbon nanosheets for hydrogen evolution reaction

论文摘要

Molybdenum carbides（MoxC）/nitrogen doped carbon nanosheets（NCS） composites are synthesized via simple mixing melamine and ammonia molybdate, followed by a high-temperature treatment. Metal carbide nanoparticles with ultra-small size（13nm） are uniformly supported on nitrogen doped carbon nanosheets. The hydrogen evolution reaction（HER） is investigated in both 0.5 mol/L H2SO4 and 1 mol/L KOH media. Mo2C/NCS-10（melamine/ammonia molybdate weight ratio of 10:1） exhibits excellent performance with a low overpotential of 130 mV in 0.5 mol/L H2SO4 solution and 108 mVin 1mol/L KOH solution at the current density of 10 mA/cm2. The better electrocatalytic activity could be ascribed to Ndoped carbon nanosheets, small particle size, mesoporous structure, and large specific surface area,which could provide the large electrochemical active surface area and facilitate mass transport.

论文目录

文章来源

类型: 期刊论文

作者: Kedong Xia,Junpo Guo,Cuijuan Xuan,Ting Huang,Zhiping Deng,Lingxuan Chen,Deli Wang

来源: Chinese Chemical Letters 2019年01期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 化学,无机化工

单位: Key laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education,Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology

基金: supported by the National Natural Science Foundation (No. 21706086)

分类号: O643.36;TQ116.2

页码: 192-196

总页数: 5

文件大小: 4851K

下载量: 10

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