燃料电池催化层的结构增强与物理耐久性

聚四氟乙烯

燃料电池催化层的结构增强与物理耐久性
Structure enhancement and physical durability of hydrophilic catalyst layer for PEM fuel cell

作　　者：唐建均 潘牧 唐浩林

TANG Jian-jun,PAN Mu,TANG Hao-lin（State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology,Wuhan,Hubei 430070,China）

机构地区：武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《电池工业》 CAS 2011年第16卷第4期 235-238页,共4页

Chinese Battery Industry

基　　金：国家高技术研究发展计划重大项目（2008AA11A106）

摘　　要：亲水催化层在湿度循环条件下产生的结构破坏,是目前CCM（Catalyst Coated Membrane）膜电极退化的重要原因。本研究采用复合胶体技术,在亲水催化层中添加聚四氟乙烯（PTFE）结构增强相制备了PTFE/Nafion亲疏水催化层及其CCM膜电极。干湿循环耐久性测试结果表明,PTFE结构增强可以显著提高催化层的抗溶胀应力能力,从而提高CCM膜电极的物理稳定性。

Microstructure decay of the hydrophilic catalyst layer under long-term humidity cycles is one of the most important issues for CCM（catalyst coated membrane） degradation.Approach in the current research was adding hydrophobic PTFE（polytetrafluoroethylene） into the catalyst layer to form a hydrophilic/hydrophobic PTFE/Nafion catalyst layer by a composite colloid methodology.The results demonstrated that the hydrophilic/hydrophobic phase could obviously reduce the humidity-induced stress and improve the physical stability of the catalyst layer and the CCM under humidity cycle conditions.

关 键 词：质子交换膜燃料电池 亲水催化层 聚四氟乙烯 物理耐久性
proton exchange membrane fuel cell（PEMFC） hydrophilic catalyst layer polytetrafluoroethylene physical durability
分 类 号：TM911.4 [工业技术 > 电工技术 > 独立电源技术（直接发电） > 化学电源、电池、燃料电池]

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