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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学成都研究院院长
性别：男
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：化工学院
学科：化学工艺. 物理化学. 功能材料化学与化工
办公地点：大连理工大学西部校区化工综合楼A401室
联系方式：辽宁省大连市高新区凌工路2号，邮编116024
电子邮箱：changhai@dlut.edu.cn
Polyvinyl alcohol protected Mo2C/Mo2N multicomponent electrocatalysts with controlled morphology for hydrogen evolution reaction in acid and alkaline medium
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论文类型：期刊论文
发表时间：2018-05-20
发表刊物：ELECTROCHIMICA ACTA
收录刊物：SCIE、EI
卷号：273
页面范围：239-247
ISSN号：0013-4686
关键字：Molybdenum carbide; Molybdenum nitride; Polyvinyl alcohol; Controlled morphology; Hydrogen evolution reaction
摘要：Herein, PVA-Mo2C/Mo2N nanospheres with surface roughness are synthesized via a polyvinyl alcohol (PVA) involved approach and used for hydrogen evolution reaction (HER). The average crystallite size of the PVA protected nMo(2)CN nanospheres (6.1 nm) is one third of that of the PVA-Mo2C/Mo2N without PVA protection (17.9 nm). At 10 mAcm(-2) current density, the as-synthesized PVA-Mo2C/Mo2N nanospheres with surface roughness exhibit HER overpotentials of 132 mV and 142 mV with corresponding Tafel slope of 51.8 mV dec(-1) and 50.4 mV dec(-1) in acid and alkaline medium, respectively. This high apparent activity can be attributed to the high intrinsic activity originated from the adjacent surface active sites of Mo2C and Mo2N as well as the large ECSA of PVA-Mo2C/Mo2N nanospheres with surface roughness. (C) 2018 Elsevier Ltd. All rights reserved.