A quaternary ammonium grafted poly vinyl benzyl chloride membrane for alkaline anion exchange membrane water electrolysers with no-noble-metal catalysts
A quaternary ammonium grafted poly vinyl benzyl chloride membrane for alkaline anion exchange membrane water electrolysers with no-noble-metal catalysts
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DOI：
10.1016/j.ijhydene.2012.03.116
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发表时间：
2012-06-01
影响因子：
7.2
通讯作者：
Scott, Keith
中科院分区：
文献类型：
--
作者：
Cao, Yuan-Cheng;Wu, Xu;Scott, Keith
本文报道了一种无贵金属催化剂的碱性阴离子交换膜水电解槽（AAEMWE）。合成了甲基化三聚氰胺接枝聚乙烯基苄基氯（mm-qPVBz/Cl-），并浇铸成膜。当温度从25 ℃升高到60 ℃时，这种氢氧离子交换膜的电导率从1.6 × 10（-2）S cm（-1）增加到2.7 × 10（-2-）S cm（-1）。使用TEM检查膜。所使用的析氧催化剂基于通过热分解方法合成的尺寸为20-30 nm的Cu 0.7Co 2.3O 4颗粒。以所得膜为电解质，Cu 0. 7 Co 2. 3 O 4纳米粒子为阳极催化剂，Ni纳米粉体为析氢催化剂，制备了膜电极。SEM观察表明催化剂在电极上分散良好。极化曲线表现出约1.5V的水电解的起始电压。在25 ℃、40 ℃和55 ℃的温度下，在100 mA cm（-2）的电流密度下，去离子水中的MEA极化分别表现出2.19V、2.05V、1.99V的电压。版权所有（C）2012，氢能出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
This work reported an alkaline anion exchange membrane water electrolyser (AAEMWE) without noble metal as the catalyst. Methylated melamine grafted poly vinyl benzyl chloride (mm-qPVBz/Cl-) was synthesized and cast as the membrane. The conductivity of this hydroxide ion exchange membrane increased from 1.6 x 10(-2) S cm(-1) to 2.7 x 10(-2-) S cm(-1) when the temperature was increased from 25 degrees C to 60 degrees C. Membranes were examined using TEM. The oxygen evolution catalyst used was based on Cu0.7Co2.3O4 particle 20-30 nm in size, synthesized through a thermal decomposition method. A membrane electrode assembly was prepared with the resultant membrane as electrolyte, the Cu0.7Co2.3O4 nano-particles as the anode catalyst and Ni nano-powders as the hydrogen evolution catalyst. SEM observations showed that the catalysts were well dispersed on the electrodes. The polarization curves exhibited onset voltages for water electrolysis of around 1.5 V. The MEA polarisation in deionised water exhibited voltages of 2.19 V, 2.05 V, 1.99 V at a current density of 100 mA cm(-2) at temperatures of 25 degrees C, 40 degrees C and 55 degrees C respectively. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.