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

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

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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 ho-mogeneity 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.

Proton-exchange-membrane fuel cellMicroporous layerCrack densityCrack homogeneityPolytetrafluoroethylene distributionSurfactant

Zhekun Chen、Weitong Pan、Longfei Tang、Xueli Chen、Fuchen Wang

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Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality,Ministry of Education,East China University of Science and Technology,Shanghai 200237,China

Key Laboratory of Pressure Systems and Safety,Ministry of Education,East China University of Science and Technology,Shanghai 200237,China

China National Postdoctoral Program for Innovative TalentsChina Postdoctoral Science FoundationShanghai Super Postdoctoral Incentive Program

BX202301212023M7411632023741

2024

10.1016/j.cjche.2024.01.023

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.69(5)
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