Nafion-sulfonated silica composite membrane for proton exchange membrane fuel cells under operating low humidity condition

被引：116

作者：

Oh, Kwangjin ^{[1
]}

Kwon, Osung ^{[3
]}

Son, Byungrak ^{[1
]}

Ha Lee, Dong ^{[1
]}

Shanmugam, Sangaraju ^{[2
]}

机构：

[1] DGIST, Convergence Res Ctr Wellness, Daegu 42988, South Korea

[2] DGIST, Dept Energy Sci & Engn, Daegu 42988, South Korea

[3] Keimyung Univ, Coll Liberal Educ, Daegu 1095, South Korea

来源：

JOURNAL OF MEMBRANE SCIENCE | 2019年 / 583卷

关键词：

Sulfonated silica; Composite membrane; Low relative humidity; Proton conductivity; Fuel cell performance; POLYMER ELECTROLYTE MEMBRANES; NANOCOMPOSITE MEMBRANES; NANOPARTICLES; ACID; CONDUCTIVITY; FABRICATION; NANOTUBES; SIZE; COPOLYMERS; STABILITY;

D O I：

10.1016/j.memsci.2019.04.031

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Sulfonated silica, synthesized by using tetraethyl orthosilicate and chlorosulfuric acid through calcination, was used as a filler to create Nafion-SSA composite membranes for applying proton exchange membrane fuel cells under low relative humidity (RH) condition. High water uptake and ion exchange capacity values were observed, and the Nafion-SSA composite membrane showed improved proton conductivity than that of the recast Nafion. The fuel cell operating at 80 degrees C under 20% RH with Nafion-SSA composite membrane showed 2.8 times higher maximum power density (454 mW cm(-2)) and current density (2062 mA cm(-2)) in comparison with the recast Nafion (159 mW cm(-2), 734 mA cm(-2)). The thermal stability and mechanical properties of recast Nafion and Nafion-SSA composite membranes were evaluated by TGA and Tensile test.

引用

页码：103 / 109

页数：7

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