电池2013，Vol.43Issue(3)：123-126,4.
磺化皂土改性直接甲醇燃料电池用Nafion膜
Sulfonated bentonite modified Nafion membrane for direct methanol fuel cell
摘要
Abstract
A novel proton exchange membrane with lower methanol permeation was prepared by doping sulfonated bentonite and tetraethyl orthosilicate (TEOS)into Nafion 212 membrane by sol-gel method.The proton conductivity and methanol permeability coefficient of modified membrane and Nafion 212 were studied by chronoamperometey and AC impedance tests.It showed that the methanol permeability coefficient of modified membrane decreased by 86％ compared with Nafion 212 membrane,and the modified membrane also had a good proton conductivity which reached to 69.6 mS/cm.It was indicated by the cell tests that the membrane electrode assembly(MEA) prepared with modified membrane got better performance under the situation of relatively high temperature.The methanol crossover of MEA with modified membrane was significantly lower,which decreased respectively 67.7 mA/cm2 and 61.5 mA/cm2 under the different temperatures of 30℃ and 55℃.关键词
质子交换膜/甲醇渗透/质子电导率/直接甲醇燃料电池(DMFC)Key words
proton exchange membrane/ methanol permeability/ proton conductivity/ direct methanol fuel ceil(DMFC)分类
信息技术与安全科学引用本文复制引用
田哲,刘桂成,王萌,王新东..磺化皂土改性直接甲醇燃料电池用Nafion膜[J].电池,2013,43(3):123-126,4.基金项目
国家863项目(2007AA05Z150),国家自然科学基金项目(50874008) （2007AA05Z150）
