New Nanocomposite Hybrid Inorganic-Organic Proton-Conducting Membranes Based on Functionalized Silica and PTFE

被引：17

作者：

Di Noto, Vito ^{[1
]}

Piga, Matteo ^{[1
]}

Giffin, Guinevere A. ^{[1
]}

Negro, Enrico ^{[1
]}

Furlan, Claudio ^{[2
]}

Vezzu, Keti ^{[1
]}

机构：

[1] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy

[2] Univ Padua, Ctr Serv Interdipartimentali CUGAS, I-35131 Padua, Italy

来源：

CHEMSUSCHEM | 2012年 / 5卷 / 09期

关键词：

conducting materials; fuel cells; nanostructures; proton transport; silica; ANCHORED SULFONIC-ACID; TEMPERATURE FUEL-CELLS; POLYMER ELECTROLYTE; EXCHANGE MEMBRANES; COMPOSITE MEMBRANES; PART I; IONIC LIQUID; METHANOL; SYSTEMS; LITHIUM;

D O I：

10.1002/cssc.201200118

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two types of new nanocomposite proton-exchange membranes, consisting of functionalized and pristine nanoparticles of silica and silicone rubber (SR) embedded in a polytetrafluoroethylene (PTFE) matrix, were prepared. The membrane precursor was obtained from a mechanical rolling process, and the SiO2 nanoparticles were functionalized by soaking the membranes in a solution of 2-(4-chlorosulfonylphenyl)ethyl trichlorosilane (CSPhEtCS). The membranes exhibit a highly compact morphology and a lack of fibrous PTFE. At 125?degrees C, the membrane containing the functionalized nanoparticles has an elastic modulus (2.2 MPa) that is higher than that of pristine Nafion (1.28 MPa) and a conductivity of 3.6x10-3 S?cm-1 despite a low proton-exchange capacity (0.11 meq?g-1). The good thermal and mechanical stability and conductivity at T>100?degrees C make these membranes a promising low-cost material for application in proton-exchange membrane fuel cells operating at temperatures higher than 100?degrees C.

引用

页码：1758 / 1766

页数：9

共 45 条

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