A reversible water electrolyser with porous PTFE based OH- conductive membrane as energy storage cells
A reversible water electrolyser with porous PTFE based OH- conductive membrane as energy storage cells
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以多孔PTFE基OH-导电膜作为储能电池的可逆水电解槽
DOI：
10.1016/j.jpowsour.2013.07.081
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发表时间：
2014
影响因子：
9.2
通讯作者：
Wu X
中科院分区：
文献类型：
--
作者：
Wu X
采用多孔聚四氟乙烯和聚甲基丙烯酸季铵盐离聚物通过填孔法制备了OH−型导电阴离子交换膜。复合膜具有较小的厚度和面积变化的溶胀比和更强的拉伸强度比原始的聚甲基丙烯酸酯膜。复合膜的离子电导率不如原始的聚甲基丙烯酸酯离聚物膜。然而，复合膜超薄，因此导致膜电极组件的离子电阻较小，电流密度提高。在燃料电池模式下，20 ° C和45 °C时的峰值功率密度分别为0.114和0.163 W cm− 2。在水电解槽模式下，在100 mA cm-2的电流密度下，电池电压在22 °C和50 °C下分别约为1.61 V和1.52 V。在水电解槽模式下，在22 °C下，100 mA cm− 2的电流密度下，120 h后的降解速率仅为0.0379 mV h− 1。
An OH−conductive anion exchange membrane was prepared by a pore-filling method with porous polytetrafluoroethylene and a quaternary ammonium polymethacrylate ionomer. The composite membrane exhibited less swelling ratios of thickness and area variation and stronger tensile strength than the pristine polymethacrylate membrane. The ionic conductivity of the composite membrane was not as good as the pristine polymethacrylate ionomer membrane. However, the composite membrane was ultra-thin therefore it leaded to a smaller ionic resistance of the MEA and improved current densities. In fuel cell mode, the peak power densities were respectively 0.114 and 0.163 W cm−2at 20 and 45 °C. In water electrolyser mode, at a current density of 100 mA cm−2the cell voltages were about 1.61 V and 1.52 V respectively at 22 °C and 50 °C. In the water electrolyser mode, the degradation rate was only 0.0379 mV h−1after 120 h at a current density of 100 mA cm−2at 22 °C.