广东工业大学学报 ›› 2023, Vol. 40 ›› Issue (06): 106-113,184.doi: 10.12052/gdutxb.230114

• 催化与能源材料 • 上一篇    下一篇

Zn/Fe纳米颗粒共嵌入碳纳米管提高氧还原反应性能

吴梦雪1, 马金福2, 刘子逸2, 刘慧泽2, 王冠东2, 陈轩毅1, 施志聪1   

  1. 1. 广东工业大学 材料与能源学院, 广东 广州 510006;
    2. 北方民族大学 材料科学与工程学院, 宁夏 银川 750021
  • 收稿日期:2023-08-25 出版日期:2023-11-25 发布日期:2023-11-08
  • 通信作者: 马金福(1980-),教授,博士,主要研究方向为新能源材料、燃料电池,E-mail:ma_jinfu@nun.edu.cn;施志聪(1976-),男,教授,博士,主要研究方向为新能源材料、新型电池、电化学测试技术,E-mail:zhicong@gdut.edu.cn
  • 作者简介:吴梦雪(1997-),女,博士研究生,主要研究方向为金属-空气电池,E-mail:wumengxue1741@163.com
  • 基金资助:
    国家自然科学基金资助项目(21865002)；宁夏自然科学基金资助项目(2022AAC02044)

Zn/Fe Nanoparticles Co-embedded with Carbon Nanotubes Improve the Oxygen Reduction Reaction Performance

Wu Meng-xue1, Ma Jin-fu2, Liu Zi-yi2, Liu Hui-ze2, Wang Guan-dong2, Chen Xuan-Yi1, Shi Zhi-cong1   

  1. 1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;
    2. School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, China
  • Received:2023-08-25 Online:2023-11-25 Published:2023-11-08

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摘要： 开发低成本、高稳定、高催化活性氧化还原反应(Oxygen Reduction Reaction, ORR)的非贵金属催化剂对燃料电池和金属-空气电池的应用至关重要。本文研究了以ZIF-8为前驱体一步合成ZnFe纳米颗粒嵌入N、S掺杂碳纳米管的复合催化剂(ZnS-FeS-Fe3C/S, NCNT)。通过电化学测试确定最优煅烧温度后的样品ZFF/S, NCNT-8的起始电位Eo为0.99 V vs. RHE和半波电位E1/2为0.84 V vs. RHE，并且与商业Pt/C相当，具有良好的甲醇耐受性和长期稳定性。同时也提出S、N共掺杂碳纳米管(Carbon Nanotube, CNT) 和额外的ZnS、FeS和Fe3C提供活性位点可以提高ORR催化性能。文中所采用的原位生长CNT方法，可为制备燃料电池和金属-空气电池的阴极催化剂提供思路。

关键词: 氧还原反应, 氮、硫掺杂碳纳米管, ZIF-8, 热解, 碳材料

Abstract: The development of low-cost, highly stable, and catalytically active oxygen reduction reaction (ORR) non-precious metal catalysts is essential for fuel cells and metal-air batteries applications. In this study, the one-step synthesis of composite catalysts of ZnFe nanoparticles embedded with nitrogen and sulfur doped carbon nanotubes (ZnS-FeS-Fe3C/S, NCNT) was reported using ZIF-8 as precursor. The sample of ZFF/S, NCNT-8 after the optimal calcination temperature was determined by electrochemical tests to be onset potential of 0.99 V vs. RHE and a half-wave potential of 0.84 V vs. RHE, as well as a good methanol tolerance and long-term durability comparable to commercial Pt/C. It is also proposed that S, N co-doped carbon nanotube (CNT) and additional ZnS, FeS and Fe3C providing active sites can enhance the ORR catalytic performance. The in-situ growth CNT method used in the study can provide ideas for the preparation of cathode catalysts for fuel cells and metal-air batteries.

Key words: oxygen reduction reaction, N, S doped carbon nanotubes, ZIF-8, pyrolysis, carbon materials

中图分类号: 

  • TM912
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