An experimental study on the placement of reference electrodes in alkaline polymer electrolyte membrane fuel cells

An experimental study on the placement of reference electrodes in alkaline polymer electrolyte membrane fuel cells
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碱性聚合物电解质膜燃料电池参比电极放置的实验研究

DOI:
10.1016/j.electacta.2010.08.032
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发表时间:
2010
影响因子:
6.6
通讯作者:
Zeng R
Zeng R
中科院分区:
材料科学2区
文献类型:
--
作者:
Zeng R

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当研究含有<100μm厚度固体电解质的平面配置的燃料电池时,以及使用常见的三电极布置时,准确测量单独的原位阳极和阴极过电位和阻抗响应的能力仍然是一个争论的来源。研究结果表明,采用两个空间分离的参比电极,当碱性聚合物膜燃料电池的碱性膜电极组件(碱性聚合物电解质膜燃料电池)的阴极和阳极精确且最佳地错位时,可以成功地测量到阳极和阴极的过电位和阻抗。两个参比电极之间的频率相关响应归因于膜响应和阳极与阴极之间的“串扰”。
The ability to accurately measure separate in situ anode and cathode overpotentials and impedance responses is still a source of debate when investigating fuel cells of planar configuration containing <100μm thickness solid electrolytes and when using the common three-electrode arrangement. The results obtained in this study indicate that the overpotentials and impedances of the anode and cathode can be successfully measured when using two spatially separated reference electrodes and when the cathode and anode of alkaline membrane electrode assemblies (for alkaline polymer electrolyte membrane fuel cells) are precisely and optimally misaligned. The frequency dependent response between the two reference electrodes is attributed to the membrane response and the “crosstalk” between anode and cathode.
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