期刊
JOURNAL OF POWER SOURCES
卷 115, 期 1, 页码 149-152出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(02)00650-X
关键词
cationic polyelectrolyte; polysulfonium; separator; anion permselectivity; zinc-air battery
A polyelectrolyte containing a sulfonium cation, poly(methylsulfonio-1,4-phenylenethio-1,4-phenylene trifluoromethanesulfonate) (1) was tested as a separator in a zinc-air cell. In comparison with the commercially available separators such as polypropylene, polysulfonium 1 was highly effective to prevent cation permeation from the anode to cathode and effectively increased the capacity six-fold greater than that of polypropylene during discharge. This phenomenon was explained by the ion-exchange process of the membrane 1, which showed an anion-permselectivity toward OH- at low KOH aqueous solution concentrations (<1 M). (C) 2003 Elsevier Science B.V. All rights reserved.
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