Author:
Ma Liying,Xu Guoxiao,Li Shuai,Ma Jiao,Li Jing,Cai Weiwei
Abstract
A hyper-branched sulfonated polyimide (s-PI) was synthesized successfully and composited with polyvinylidene fluoride (PVDF) to achieve ultra-high methanol-permeation resistive for direct methanol fuel cell application. The optimized s-PI-PVDF composite membrane exhibited methanol resistivity low to 1.80 × 10−8 cm2/s, two orders of magnitude lower than the value of the commercial Nafion 117 membrane (60 × 10−7 cm2/s). At the same time, the tensile strength of the composite membrane is 22 MPa, which is comparable to the value of the Nafion 117 membrane. Therefore, the composite membrane is promising for application in direct methanol fuel cell.
Funder
National Natural Science Foundation of China
Subject
Polymers and Plastics,General Chemistry
Cited by
9 articles.
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