[1]周丹,刘灵惠,王爱琴,等.二硫化钼自支撑电极电化学析氢性能研究[J].应用科技,2019,46(05):88-92.[doi:10.11991/yykj.201810003]
 ZHOU Dan,LIU Linghui,WANG Aiqin,et al.Electrochemical hydrogen evolution performance of MoS2 self-supported electrodes[J].Applied science and technology,2019,46(05):88-92.[doi:10.11991/yykj.201810003]
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二硫化钼自支撑电极电化学析氢性能研究(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第46卷
期数:
2019年05期
页码:
88-92
栏目:
材料与化学
出版日期:
2019-09-05

文章信息/Info

Title:
Electrochemical hydrogen evolution performance of MoS2 self-supported electrodes
作者:
周丹12 刘灵惠2 王爱琴2 银建中1
1. 大连理工大学 化工机械与安全学院, 辽宁 大连 116024;
2. 中国科学院 大连化学物理研究所, 辽宁 大连 116024
Author(s):
ZHOU Dan12 LIU Linghui2 WANG Aiqin2 YIN Jianzhong1
1. School of Chemical Engineering and Safety, Dalian University of Technology, Dalian 116024, China;
2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116012, China
关键词:
电化学析氢二硫化钼掺杂塔菲尔斜率过电位电流密度自支撑电极电解水
Keywords:
HERMoS2dopingTafel slopeoverpotentialcurrent densityself-supported electrodeselectrolysis of water
分类号:
O646
DOI:
10.11991/yykj.201810003
文献标志码:
A
摘要:
目前电解水制氢性能最佳的催化剂是铂基催化剂,但铂地壳丰度却很低,需寻求性能优异且价格低廉的替代品。二硫化钼是一种有望替代铂基催化剂的高效析氢催化剂。采用溶剂热方法制备了4种不同性能的MoS2,并在其上成功地掺杂了非贵金属Ni和Co,改善其析氢性能。结果表明:仲钼酸铵水热法制备MoS2时,掺入质量分数0.018%的钴,可以将其析氢活性大大提高,在电流密度10 mA·cm-2时的电位由273 mV降到234 mV;当把溶剂水换成N,N-二甲基酰胺(DMF),MoS2具有独特的垂直排列形貌,暴露了更多的硫边位,因此在电流密度10 mA·cm-2时,过电位为220 mV;而在MoS2中掺氟制得的F-MoS2,由于F的掺入加快了其电子传输速率,塔菲尔(Tafel)斜率仅为62 mV/dec。
Abstract:
At present, the best catalyst for hydrogen production by electrolysis of water is platinum-based catalyst, but the crustal abundance of platinum is very low. Therefore, it is necessary to find substitutes with excellent performance and low price. Molybdenum disulfide is a high-efficiency hydrogen evolution catalyst that is expected to replace platinum based catalysts. In this study, four kinds of MoS2 with different properties were prepared by solvothermal methods, and non-noble metals Ni and Co were successfully doped into them to improve their hydrogen evolution performance. Results show that, when preparing MoS2 by hydrothermal method from ammonium heptamolybdate, the hydrogen evolution activity could be greatly improved by adding 0.018% cobalt, and the potential at 10 mA·cm-2 decreased from 273 mV to 234 mV; When the solvent water was replaced by DMF, MoS2 had a unique vertical arrangement morphology and exposed more sulfur edge sites. So, the overpotential was 220 mV at a current density of 10 mA·cm-2. However, for F-MoS2 prepared by doping fluorine into MoS2, the Tafel slope was only 62 mV/dec because the doping of F accelerated its electron transfer rate.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-10-11。
基金项目:国家自然科学基金项目(21506027,U1662130)
作者简介:周丹,女,博士研究生;银建中,男,教授,博士
通讯作者:银建中,E-mail:jzyin@dlut.edu.cn
更新日期/Last Update: 2019-08-29