Effect of carbon material and surfactant on ink property and resulting surface cracks of fuel-cell microporous layers

被引：0
作者：
Chen, Zhekun [1 ]
Pan, Weitong [1 ,2 ]
Tang, Longfei [1 ]
Chen, Xueli [1 ]
机构：
[1] East China Univ Sci & Technol, Engn Res Ctr Resource Utilizat Carbon Containing W, Minist Educ, Shanghai 200237, Peoples R China
[2] East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2024年 / 69卷
基金：
中国博士后科学基金;
关键词：
Proton-exchange-membrane fuel cell; Microporous layer; Crack density; Crack homogeneity; Polytetrafluoroethylene distribution; Surfactant; GAS-DIFFUSION LAYER; MICRO-POROUS LAYER; CATALYST LAYER; POLYTETRAFLUOROETHYLENE DISTRIBUTION; PERFORMANCE IMPROVEMENT; INTERFACIAL MORPHOLOGY; WATER MANAGEMENT; PTFE CONTENT; POLYMER; TRANSPORT;
D O I：
10.1016/j.cjche.2024.01.023
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Ensuring the consistency of electrode structure in proton-exchange-membrane fuel cells is highly desired yet challenging because of wide-existing and unguided cracks in the microporous layer (MPL). The first thing is to evaluate the homogeneity of MPL with cracks quantitatively. This paper proposes the homogeneity index of a full-scale MPL with an area of 50 cm2, which is yet to be reported in the literature to our knowledge. Besides, the effects of the carbon material and surfactant on the ink and resulting MPL structure have been studied. The ink with a high network development degree produces an MPL with low crack density, but the ink with high PDI produces an MPL with low crack homogeneity. The polarity of the surfactant and the non-polarity of polytetrafluoroethylene (PTFE) are not mutually soluble, resulting in the heterogeneous PTFE distribution. The findings of this study provide guidelines for MPL fabrication. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
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页码：1 / 12
页数：12
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