Investigation of water transport in fuel cells using water transport plates and solid plates.

Investigation of water transport in fuel cells using water transport plates and solid plates.
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使用水传输板和固体板研究燃料电池中的水传输

DOI:
10.1039/c7ra11806f
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发表时间:
2018-01-02
期刊:
影响因子:
3.9
通讯作者:
Yi, Baolian
Yi, Baolian
中科院分区:
化学3区
文献类型:
--
作者:
Wang, Zhiqiang;Qu, Lijuan;Zeng, Yachao;Guo, Xiaoqian;Shao, Zhigang;Yi, Baolian

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质子交换膜燃料电池(PEMFC)的水管理对于实现更好的性能和耐久性至关重要。在这项研究中,多孔亲水性水传输板(WTP)具有不同的孔结构的制备和使用,以改善PEMFC中的水管理。通过极化曲线、电化学阻抗谱(EIS)和水平衡测试,研究了孔结构对电池性能和水传输过程的影响。结果表明,由于WTP具有过量的液态水通量,孔结构对膜的排水性能影响不大,而随着WTP表面蒸发速率的增加,膜的水合作用得到改善,从而使电池性能得到改善。良好的电池性能表明,WTP是一种很有前途的技术,以改善PEMFC中的水管理。
Water management of proton exchange membrane fuel cells (PEMFCs) is of vital importance to achieve better performance and durability. In this study, porous hydrophilic water transport plates (WTPs) with different pore structures were prepared and employed to improve water management in PEMFCs. Polarization curves, electrochemical impedance spectroscopy (EIS) and water balance were tested to investigate the effect of pore structure on cell performance and water transport process. The results show that pore structure has little effect on drainage function due to excess liquid water flux of WTPs, while the membrane hydration is improved with increased surface evaporation rate of WTPs, resulting in better cell performance. The favorable cell performance shows that WTP is a promising technique to improve water management in PEMFCs.
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