PERFORMANCE OF DIFFERENTLY CROSS-LINKED, PARTIALLY FLUORINATED PROTON-EXCHANGE MEMBRANES IN POLYMER ELECTROLYTE FUEL-CELLS

被引：96

作者：

BUCHI, FN ^{[1
]}

GUPTA, B ^{[1
]}

HAAS, O ^{[1
]}

SCHERER, GG ^{[1
]}

机构：

[1] PAUL SCHERRER INST,ENERGY & PROC TECHNOL LAB,CH-5232 VILLIGEN,SWITZERLAND

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1995年 / 142卷 / 09期

关键词：

D O I：

10.1149/1.2048683

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of differently cross-linked FEP-g-polystyrene proton exchange membranes has been synthesized by the preirradiation grafting method [FEP: poly(tetrafluoroethylene-co-hexafluoropropylene)]. Divinylbenzene (DVB) and/or triallyl cyanurate (TAG) were used as cross-linkers in the membranes. It was found that the physical properties of the membranes, such as water-uptake and specific resistance, are strongly influenced by the nature of the cross-linker. Generally it can be stated that DVB decreases water-uptake and increases specific resistance; on the other hand TAC increases swelling and decreases specific resistance to values as low as 5.0 Omega cm at 60 degrees C. The membranes were tested in H-2/O-2 fuel cells for stability and performance. It was found that thick (170 mu m) DVB cross-linked membranes showed stable operation for 1400 h at temperatures up to 80 degrees C. The highest power density in the fuel cell was found for the DVB and TAC double-cross-linked membrane; it exceeded the value of a cell with a Nafion(R) 117 membrane by more than 60%.

引用

页码：3044 / 3048

页数：5

共 27 条

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