Functionalization of polyvinyl alcohol composite membrane by CoOOH for direct borohydride fuel cells
Functionalization of polyvinyl alcohol composite membrane by CoOOH for direct borohydride fuel cells
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CoOOH对聚乙烯醇复合膜的功能化用于直接硼氢化物燃料电池
DOI：
10.1016/j.elecom.2017.02.005
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发表时间：
2017-04-01
影响因子：
5.4
通讯作者：
Liu, Jiabin
中科院分区：
文献类型：
--
作者：
Qin, Haiying;Hu, Yongping;Liu, Jiabin
聚乙烯醇阴离子交换树脂复合膜功能化与CoOOH用于直接硼氢化物燃料电池（DBFC），并在本报告中详细介绍。与不含CoOOH的膜相比，CoOOH官能化的膜具有更高的离子电导率和更低的硼氢化物离子渗透性。具有CoOOH官能化膜的DBFC比没有CoOOH的DBFC获得更好的性能，例如在30 ℃下在144mW.cm（-2）处的功率密度峰值。这种性能改善是由于CoOOH官能化，由此Co物质减少硼氢化物离子的交叉，同时保持羟基物质的高电导率。通过引入Co物种，避免了传统阴离子交换膜中电导率-渗透率权衡的困境。因此，膜的功能化有助于阐明阴离子交换膜燃料电池的发展。(C)2017爱思唯尔B. V.保留所有权利。
A polyvinyl alcohol anion exchange resin composite membrane was functionalized with CoOOH for use in direct borohydride fuel cells (DBFCs) and is detailed in this report. The CoOOH-functionalized membrane has a higher ionic conductivity and a lower borohydride ion permeability than the membrane without CoOOH. The DBFCs with the CoOOH-functionalized membrane achieved better performance, such as a power density peak at 144 mW.cm(-2) at 30 degrees C, than did those without CoOOH. Such performance improvement is due to CoOOH functionalization, whereby Co species reduce the crossover of the borohydride ion while maintaining high conductivity for hydroxyl species. With the introduction of the Co species, the conductivity-permeability trade-off dilemma in traditional anion exchange membranes is avoided. Therefore, the functionalization of the membrane helps to elucidate the development of anion exchange membrane fuel cells. (C) 2017 Elsevier B.V. All rights reserved.