Investigation of porous water transport plates used for the humidification of a membrane electrode assembly
Investigation of porous water transport plates used for the humidification of a membrane electrode assembly
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用于膜电极组件加湿的多孔水传输板的研究
DOI：
10.1016/j.jpowsour.2015.10.005
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发表时间：
2016-01-20
影响因子：
9.2
通讯作者：
Yi, Baolian
中科院分区：
文献类型：
--
作者：
Guo, Xiaoqian;Zeng, Yachao;Yi, Baolian
本研究采用具有透水性和阻气性能的新型多孔亲水性乙炔黑板（HABP）作为输水板，提高了质子交换膜燃料电池在低湿条件下的性能。采用压汞法、称重法和接触角法对影响渗透水通量的habp的孔隙度、弯曲度、亲水孔径、亲水孔隙分数和润湿性进行了测定。纳米级亲水性乙炔黑（HAB）粉末加入habp后，孔隙率、亲水性孔隙分数和润湿性增加，弯曲度和亲水孔径减小，渗透通量增大。采用HABP作为阳极板，电池的最大功率密度比传统固体板高194.3 mW cm（-2）。其良好的性能表明，HABP是一种很有前途的水运板材料。(C) 2015 Elsevier B.V.版权所有
In this study, a novel porous hydrophilic acetylene black plate (HABP), possessing water permeability and gas-blocking properties, is employed as a water transport plate with which to improve the performance of a proton exchange membrane fuel cell under low-humidity. Porosity, tortuosity, hydrophilic pore size, hydrophilic pore fraction and wettability of the HABPs which may influence the permeated water flux, are measured by mercury intrusion, weighing and contact angle methods. By introducing nano-sized hydrophilic acetylene black (HAB) powders into the HABPs, the porosity, hydrophilic pore fraction and wettability increase, while the tortuosity and hydrophilic pore size decrease, which results in higher permeated water flux. By employing the HABP as an anode plate, the maximum power density of the cell is 194.3 mW cm(-2) higher than that with a conventional solid plate. The favorable performance of the cell indicates that the HABP is a promising plate material for water transportation. (C) 2015 Elsevier B.V. All rights reserved.