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5Â¥: Originally posted by Ëá÷֭ at 2016-09-10 15:29:19
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3Â¥: Originally posted by 982693965 at 2016-09-09 08:32:07
ÂòÀ´µÄNafionĤÐèÒª´¦ÀíµÄ£¬²ÎÕÕ£ºThe PEM (Nafion 117, Dupont) was sequentially boiled in H2O2 (30%), deionized water, 0.5 M H2SO4, and deionized water (each time for 1 h).

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