Nafion公司
红外线的
化学
电解质
膜
红外光谱学
衰减全反射
磺酸
质子化
分析化学(期刊)
质子
傅里叶变换红外光谱
电导
高分子化学
物理化学
化学工程
有机化学
离子
光学
电化学
电极
量子力学
数学
工程类
物理
组合数学
生物化学
作者
Raman K. Singh,Keiji Kunimatsu,Kenji Miyatake,Takao Tsuneda
出处
期刊:Macromolecules
[American Chemical Society]
日期:2016-08-15
卷期号:49 (17): 6621-6629
被引量:63
标识
DOI:10.1021/acs.macromol.6b00999
摘要
A collaborative experimental and theoretical study on the dependence of the infrared (IR) spectrum of hydrated Nafion electrolyte membrane on the hydration number is investigated in great detail. Experimental time-resolved attenuated total reflection Fourier transform IR spectroscopic results show that Nafion membrane has a unique IR peak intensity dependence on the hydration number. Calculated IR spectra indicate that this unique IR peak intensity dependence is correctly reproduced not for the singly hydrated Nafion but for the doubly hydrated Nafion. This result strongly supports the relay mechanism of the proton conductance, in which protonated water clusters are relayed by the side chains through the doubly hydrated sulfonic acid groups under low-humidity conditions.
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