KOH modified Nafion112 membrane for high performance alkaline direct ethanol fuel cell
KOH modified Nafion112 membrane for high performance alkaline direct ethanol fuel cell
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DOI：
10.1016/j.ijhydene.2010.12.093
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发表时间：
2011-04-01
影响因子：
7.2
通讯作者：
Sun, Gongquan
中科院分区：
文献类型：
--
作者：
Hou, Hongying;Wang, Suli;Sun, Gongquan
将Nafion112膜在KOH溶液中室温浸泡一段时间，制备了用于碱性直接乙醇燃料电池（ADEFC）的聚合物电解质膜。所得膜(Nafion112/KOH)表现出比Nafion112膜更高的机械性能和热稳定性。 Nafion112/KOH 在 1 M、2 M 和 6 M KOH 溶液中的离子电导率分别为 0.011 S/cm、0.026 S/cm、0.032 S/cm，具体取决于内部 OH- 浓度和内部水相的体积分数。单电池性能表明，采用Nafion112/KOH膜的活性ADEFC在90℃时可输出58.87 mW/cm(2)的峰值功率密度，同时在0.2 V以上稳定运行至少12小时。另一方面，采用Nafion112/KOH的无铂呼吸式ADEFC在60℃时可输出11.5 mW/cm(2)的峰值功率密度C，相应的寿命在 0.3 V 以上时长达 473 小时。版权所有 (C) 2010，Hydrogen Energy Publications, LLC。由爱思唯尔有限公司出版。保留所有权利。
A polymer electrolyte membrane for alkaline direct ethanol fuel cell (ADEFC) was prepared by dipping Nafion112 membrane into KOH solution for some time at room temperature. The obtained membrane (Nafion112/KOH) exhibited higher mechanical properties and thermal stability than Nafion112 membrane. The ionic conductivity of Nafion112/KOH in 1 M, 2 M and 6 M KOH solutions was 0.011 S/cm, 0.026 S/cm, 0.032 S/cm, respectively, depending on internal OH- concentration and the volume fraction of the internal aqueous phase. Single cell performance suggested that active ADEFC with Nafion112/KOH membrane can deliver a peak power density of 58.87 mW/cm(2) at 90 degrees C, meanwhile, it can stably run for at least 12 h above 0.2 V. On the other hand, Pt-free air breathing ADEFC with Nafion112/KOH can output a peak power density of 11.5 mW/cm(2) at 60 degrees C, and the corresponding lifetime was as long as 473 h above 0.3 V. Copyright (C) 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.