化工学报 ›› 2022, Vol. 73 ›› Issue (9): 4156-4162.DOI: 10.11949/0438-1157.20220419

• 能源和环境工程 • 上一篇    下一篇

催化剂分布对可渗透阳极微流体燃料电池性能特性影响的研究

张童(), 杨扬, 叶丁丁, 陈蓉, 朱恂(), 廖强   

  1. 重庆大学低品位能源利用技术及系统教育部重点实验室,重庆大学工程热物理研究所,重庆 400030
  • 收稿日期:2022-03-25 修回日期:2022-07-23 出版日期:2022-09-05 发布日期:2022-10-09
  • 通讯作者: 朱恂
  • 作者简介:张童(1992—),男,博士研究生,673153675@qq.com
  • 基金资助:
    国家自然科学基金创新研究群体项目(52021004);国家自然科学基金面上项目(51776026)

Effect of catalyst distribution on the performance characteristics of microfluidic fuel cell with flow-through anode

Tong ZHANG(), Yang YANG, Dingding YE, Rong CHEN, Xun ZHU(), Qiang LIAO   

  1. Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China
  • Received:2022-03-25 Revised:2022-07-23 Online:2022-09-05 Published:2022-10-09
  • Contact: Xun ZHU

摘要:

微流体燃料电池是一种新型微型电源装置。酸性体系下电池运行时产生的CO2气泡会严重影响电池性能以及稳定性。研究电池运行过程中气泡动态行为对削弱气泡影响具有重要意义。本文构建具有可渗透阳极的自呼吸微流体燃料电池,实验研究了阳极催化剂分布对电池性能以及CO2动态行为的影响。结果表明:催化剂分布在阳极两侧时电池性能最好,但电池波动性大。仅在一侧分布催化剂时,电池运行稳定,气泡主要在电解液流道形成。

关键词: 微流体, 燃料电池, 可渗透阳极, 催化剂分布, 气液两相流, 气泡, 电池性能

Abstract:

Microfluidic fuel cell is a kind of new micro-power supply devices. The CO2 bubbles generated during the operation of the battery in an acidic system will seriously affect the performance and stability of the battery. Studying the dynamic behaviors of bubbles during cell operation is great significance in weakening the impact of bubbles. In this paper, air-breathing microfluidic fuel cells with flow-through anode were constructed, and we studied the effect of the anode catalyst distribution on the cell performance and the CO2 dynamic behaviors. The results showed that the catalyst distributed on both sides of the anode performed the best performance but poor stability. When the catalysts were distributed on one side, the cell operated stably and the bubbles were mainly formed in the electrolyte flow channel.

Key words: microfluidic, fuel cell, flow-through anode, catalyst distribution, gas-liquid two-phase flow, bubble, cell performance

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