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Study on the Preperation And Chemical Degradation Mechanism of Perfluorinated Proton Reinforced Membrane for Fuel Cells

Authors： ZHANG Shuoshuo1,2, WANG Jie1,2, MA Xiaojuan1,2, ZONG Xiujing1,2, ZHANG Yongming1,3, ZOU Yecheng1,2

Units： State Key Laboratory of Fluorinated Functional Membrane Materials, Huantai 256401 ; 2. Shandong Dongyue Polymer Material Co. Ltd., Shandong Zibo 256401; 3. School of Chemistry and Chemical Engineering of Shanghai Jiao Tong University, Shanghai 200241

KeyWords： Fuel cell proton membrane; Fenton reagent; Free radical resistance experiment; Membrane life test

ClassificationCode：TQ063

year,volume(issue):pagination： 2020,40(5):39-46

Abstract：

Proton exchange membrane is one of the key materials in the PEMFC. Durability of the proton exchange membranes directly affects the lifetime of the PEMFC. This paper prepared perfluorosulfonate proton enhanced membrane by tape casting. We used ex situ accelerate tests to study membrane degradation, soaking a piece of membrane in Fenton’s regent. The results show that DMR100 exhibited excellent chemical durability. After 24 hours of Fenton accelerated reagent treatment, mass loss rate of DMR100 was 3.96%, proton conductivity > 35 mS / cm (80 ℃, 50% RH), and the fluoride ion release rate was 0.14×10-5 mol·L-1, which is better than the two proton exchange membranes commonly used in the fuel cell industry. Free radicals such as·OH and·HOO attack the C-O-C bond of the main chain and result in the loss of the polymer repeat units and the degrading the durability of the proton exchange membrane.

Funds：

山东省重大科技创新工程项目（2018YFJH0102）

AuthorIntro：

张烁烁（1994-），女，山东淄博，硕士，工程师助理，山东东岳高分子材料有限公司，含氟功能膜开发与分析，E-mail：shuozhang321@126.com

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