碳化钨/碳复合纤维制备及其电解水析氢性能
Preparation of tungsten carbide/carbon composite fiber and its hydrogen evolution performance in electrolytic water
李梦雨 1姜淑文 1田艳1
作者信息
- 1. 大连工业大学纺织与材料工程学院,辽宁 大连 116034
- 折叠
摘要
以聚丙烯腈、N,N-二甲基甲酰胺、偏钨酸铵(AMT)为原料,采用静电纺丝法制备了碳化钨/碳(WC/C)复合纤维,对其微观形貌以及析氢活性进行了表征.结果表明,纺丝液中不同偏钨酸铵含量情况下都可以获得连续的纺出纤维,但热处理后的WC/C复合纤维长度随着偏钨酸铵含量的增加而减小.随着纺丝液中偏钨酸铵含量的增加,WC/C复合纤维材料的过电势减小,电化学活性面积增大,AMT-1.2的过电势为162 mV,表明WC赋予WC/C复合纤维良好的催化活性.随着复合纤维中WC增加,其塔费尔斜率不断增大,在一定程度上降低了析氢电化学反应速度,但赋予其良好的耐腐蚀性能.
Abstract
Tungsten carbide/carbon(WC/C)composite fibers were prepared by electrospinning method using polyacrylonitrile,N,N-dimethylformamide,and ammonium metatungstate(AMT)as raw materials,whose microstructures and hydrogen evolution activities were analyzed.The results showed that continuous fibers could be obtained with different ammonium metatungstate contents in the spinning solution,whereas the length of WC/C composite fibers after heat treatment was reduced with the increasing content of ammonium metatungstate.The over-potentials of WC/C composite fibers were reduced with the increasing content of ammonium metatungstate in the spinning solution,but the electrochemical active areas were enhanced.The over-potential of AMT-1.2 was 162 mV,indicating that WC endowed the WC/C composite fibers with excellent catalytic activity.In addition,with the increasing of WC content in the composite fiber,the Tafel slope of fibers was continuously increased,while the electrochemical reaction rate of hydrogen evolution was reduced to some extent,but endowed it with good corrosion resistance.
关键词
碳化钨/复合纤维/静电纺丝/电解水析氢/电化学Key words
tungsten carbide/composite fiber/electrospinning/electrocatalytic performance of hydro-gen evolution/electrochemistry引用本文复制引用
基金项目
辽宁省自然科学基金(2019-ZD-0286)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据