应用化学 ›› 2022, Vol. 39 ›› Issue (8): 1202-1208.DOI: 10.19894/j.issn.1000-0518.210477

• 研究论文 • 上一篇    下一篇

单原子分散的Ir-N-C燃料电池阳极抗中毒催化剂

王显1,2, 杨小龙1,2, 马荣鹏1,2, 刘长鹏1,2, 葛君杰1,2(), 邢巍1,2()   

  1. 1.中国科学院长春应用化学研究所,电分析化学国家重点实验室,长春 130022
    2.中国科学技术大学应用化学与工程学院,合肥 230026
  • 收稿日期:2021-09-24 接受日期:2022-02-22 出版日期:2022-08-01 发布日期:2022-08-04
  • 通讯作者: 葛君杰,邢巍
  • 基金资助:
    国家重点研发项目(2017YFB0102905);吉林省科技发展计划项目资助(20190201300JC)

Atomic Dispersion Ir‑N‑C Catalysts for Anode Anti‑poisoning Electrolysis in Fuel Cell

Xian WANG1,2, Xiao-Long YANG1,2, Rong-Peng MA1,2, Chang-Peng LIU1,2, Jun-Jie GE1,2(), Wei XING1,2()   

  1. 1.State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    2.School of Applied Chemical Engineering,University of Science and Technology of China,Hefei 230026,China
  • Received:2021-09-24 Accepted:2022-02-22 Published:2022-08-01 Online:2022-08-04
  • Contact: Jun-Jie GE,Wei XING
  • About author:xingwei@ciac.ac.cn
    gejj@ciac.ac.cn
  • Supported by:
    the National Science and Technology Major Project(2017YFB0102905);the Jilin Province Science and Technology Development Program(20190201300JC)

摘要:

燃料电池的阳极抗中毒研究是重要课题,探索具有超高质量活性和抗CO毒化的阳极催化剂具有显著的科学意义和应用价值。本文成功制备了Ir原子级别分散在N掺杂碳的载体上的新催化剂,并且发现该Ir-N-C对甲酸具有良好的电催化氧化性能,其质量比活性为商业Pd/C的48倍。组装了燃料电池单电池进行测试,结果显示,Ir-N-C催化剂在单电池中的质量比功率密度高达281 mW/mg,较商业Pd/C催化剂提升了3倍。同时,Ir-N-C对CO毒化的耐受性大大增强,经过14000 s的长期测试后,其活性仅衰减68%,优于商业Pd/C催化剂(衰减85%)。并且,该催化剂能够简单有效的大批量制备,为单原子催化剂的大批量制备提供了新思路。

关键词: 燃料电池, 单原子催化剂, 抗CO毒化, 大批量制备

Abstract:

The anti-poisoning behavior of the anode catalyst, especially the tolerance to CO, is of vital importance for the widespread application of fuel cells. Herein, we successfully synthesize an Ir based catalyst in atomic dispersion. The Ir-N-C catalyst has excellent electrocatalytic performance for formic acid oxidation, which represents the mass activity that is 48 times of the commercial Pd/C. In a single cell, the Ir-N-C catalyst represents a mass specific power density at 281 mW/mg, which is 3 times higher than of the Pd/C catalyst. Furthermore, the Ir-N-C catalysts show amazing CO anti-poisoning performance. After a long-term test of 14000 s, its activity only decays by 68%, which is much better than commercial Pd/C catalysts (85%). In addition, the catalyst can be easily prepared, which provides a new path for the large-scale preparation of single-atom catalysts.

Key words: Fuel cell, Single-atom catalyst, CO anti-poisoning, Large-scale preparation

中图分类号: