Synthesis of poly(2,5-benzimidazole) for use as a fuel-cell membrane

被引:97
作者
Kim, HJ [1 ]
Cho, SY [1 ]
An, SJ [1 ]
Eun, YC [1 ]
Kim, JY [1 ]
Yoon, HK [1 ]
Kweon, HJ [1 ]
Yew, KH [1 ]
机构
[1] Samsung SDI Corp, Ctr Res & Dev, Energy Lab, Yongin Si 449577, Gyeonggi Do, South Korea
关键词
fuel-cell membrane; methanesulfonic acid; phosphorus pentoxide; poly(2,5-benzimidazole); doping; proton conductivity;
D O I
10.1002/marc.200300288
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Poly(2,5-benzimidazole) (ABPBI) was synthesized in a novel polymerization medium containing CH3-SO3H and P2O5. 3,4-Diaminobenzoic acid, a monomer for ABPBI, is soluble in the medium and the polymerization was therefore performed in a homogeneous state. it produced polymer fibers, thus simplifying the work-up process. The membrane was cast directly from the polymerization mixture. Proton conductivities of the ABPBI membranes ranged from 0.02 to 0.06 S.cm(-1) above 100 degreesC, without humidification, and the tensile strength of the membrane was approximately 100 MPa.
引用
收藏
页码:894 / 897
页数:4
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