个人信息
教师姓名：尹良君
教师拼音名称：yinliangjun
电子邮箱：ljyin@uestc.edu.cn
所在单位：电子科学与工程学院
学历：博士研究生毕业
办公地点：国家电磁辐射控制材料工程技术研究中心 C318B
性别：男
学位：工学博士学位
职称：教授
在职信息：在职人员
毕业院校：中国科技大学
硕士生导师
曾获荣誉：省部级人才计划
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所属院系： 电子科学与工程学院（示范性微电子学院）
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学科：电子信息材料与元器件
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论文成果
Self-supported porous heterostructure WC/WO3?x ceramic electrode for hydrogen evolution reaction in acidic and alkaline media
发布时间：2025-05-23 点击次数：
所属单位：[1] CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China; [2] School of Materials Science and Engineering, Henan Key Laboratory of Special Protective Materials, Luoyang Institute of Science and Technology, Luoyang, 471023, China; [3] Yangtze Delta Region Institute [Huzhou], University of Electronic Science and Technology of China, Huzhou, 313001, China; [4] School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China; [5] CAS Key Laboratory of Mechanical Behaviors and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230026, China; [6] Department of Materials Science and Engineering, University of Ioannina, Ioannina, GR-451 10, Greece
发表刊物：Journal of Advanced Ceramics
关键字：Catalyst activity - Ceramic materials - Charge transfer - Electronic structure - Hydrogen - Oxygen vacancies - Sintering - Tungsten carbide
摘要：Tungsten carbide (WC)-based materials are widely considered as the hydrogen evolution reaction (HER) process catalysts due to their "Pt-like" electronic structure. Nonetheless, traditional powder electrodes have a high cost, and display problems related to the process itself and the poor stability over operation time. This paper presented a self-supported asymmetric porous ceramic electrode with WO3?x whiskers formed in situ on the walls of the finger-like holes and membrane surface, which was prepared by combining phase inversion tape-casting, pressureless sintering, and thermal treatment in a CO2 atmosphere. The optimized ceramic electrode displayed good catalytic HER activity and outstanding stability at high current densities. More specifically, it demonstrated the lowest overpotentials of 107 and 123 mV and the lowest Tafel slopes of 59.3 and 72.4 mV·dec?1 at 10 mA·cm?2 in acidic and alkaline media, respectively. This superior performance was ascribed to the structure of the ceramic membrane and the charge transfer efficiency, which was favored by the in situ developed WC/WO3?x heterostructure and the oxygen vacancies. [Figure not available: see fulltext.]. ? 2022, The Author(s).
文献类型：Journal article (JA)
卷号：11
期号：8
页面范围：1208-1221
ISSN号：22264108
是否译文：否
