膜
Nafion公司
甲醇
石墨烯
甲醇燃料
乙醚
化学工程
质子交换膜燃料电池
氧化物
材料科学
直接甲醇燃料电池
高分子化学
电导率
酮
化学
有机化学
纳米技术
电化学
电极
生物化学
物理化学
工程类
阳极
作者
Zhongqing Jiang,Xinsheng Zhao,Arumugam Manthiram
标识
DOI:10.1016/j.ijhydene.2013.02.129
摘要
Sulfonated organosilane functionalized graphene oxides (SSi-GO) synthesized through the grafting of graphene oxide (GO) with 3-mercaptopropyl trimethoxysilane and subsequent oxidation have been used as a filler in sulfonated poly(ether ether ketone) (SPEEK) membranes. The incorporation of SSi-GOs greatly increases the ion-exchange capacity (IEC), water uptake, and proton conductivity of the membrane. With well-controlled contents of SSi-GOs, the composite membranes exhibit higher proton conductivity and lower methanol permeability than Nafion® 112 and Nafion® 115, making them particularly attractive as proton exchange membranes (PEMs) for direct methanol fuel cells (DMFC). The composite membrane with optimal SSi-GOs content exhibit over 38 and 17% higher power densities, respectively, than Nafion® 112 and Nafion® 115 membranes in DMFCs, offering the possibilities to reduce the DMFC membrane cost significantly while keeping high-performance.
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