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首页> 外文期刊>RSC Advances >Enhancement of alkaline conductivity and chemical stability of quaternized poly(2,6-dimethyl-1,4-phenylene oxide) alkaline electrolyte membrane by mild temperature benzyl bromination
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Enhancement of alkaline conductivity and chemical stability of quaternized poly(2,6-dimethyl-1,4-phenylene oxide) alkaline electrolyte membrane by mild temperature benzyl bromination

机译：温度温度苄基溴化型季铵化聚（2,6-二甲基-1,4-亚苯基氧化烯）碱性电解质膜的碱性电导率和化学稳定性

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A series of quaternized polyphenylene oxide (QPPO) based alkaline electrolyte membranes with different degrees of quaternization were synthesized via a benzyl bromination method at mild temperature (75 °C). Quite a high hydroxide conductivity under the reduced water uptake and swelling was exhibited by this method. When the degree of bromination measured from ~(1) H NMR analysis was 30%, the corresponding hydroxide ion conductivity was 0.021 S cm ~(?1) . The chemical stability of the QPPO membranes was excellent, showing only 3% weight loss in 3 M NaOH solution during 1 month. The fuel cell performance test under H _(2) /O _(2) exhibited the power density of 77 mW cm ~(?2) and the current density of 190 mA cm ~(?2) at 70 °C. Such excellent properties of QPPO membranes resulted from the achievement of the quaternization at the benzyl position, specifically.
机译：通过温度温度（75℃），通过苄基溴化方法合成具有不同季铵化的季铵化聚苯醚（QPPO）碱性电解质膜。通过该方法表现出降低的水吸收和溶胀下的氢氧化耐热性。当从〜（1）H NMR分析中测量的溴化度为30％时，相应的氢氧化离子电导率为0.021scm〜（？1）。 QPPO膜的化学稳定性优异，在1个月内显示3M NaOH溶液中的3％重量损失。 H _（2）/ O _（2）下的燃料电池性能测试表现出77mW cm〜（Δ2）的功率密度，并且在70℃下的电流密度为190 mA cm〜（Δ2）。特别是QPPO膜的这种优异性能是由于在苄基位置处的季铵化的实现而导致。

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