Reticulated polyaniline nanowires as a cathode microporous layer for high-temperature PEMFCs |
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Authors: | Xudong Fu Tao Li Luqing Tang Xin Deng Rong Zhang Shengfei Hu Feng Zhao Xiao Li Qingting Liu |
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Affiliation: | 1. Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, 430068, PR China;2. Wuhan Troowin Power System Technology Co., Ltd., Wuhan, 430079, PR China |
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Abstract: | Traditional dense microporous layers (MPLs) are suitable for low-temperature proton exchange membrane fuel cells (PEMFCs), but they greatly hinder mass transport in high-temperature PEMFCs. Here, we report a novel cathode MPL based on reticulated polyaniline nanowires that were grown on carbon paper via in-situ electropolymerization. The maximum power density of the high-temperature PEMFC based on the new MPL was 476 mW/cm2, which was 36% higher than that based on a conventional MPL. Oxygen gain tests and electrochemical impedance spectroscopy showed that the new MPL accelerated oxygen transfer due to its unique pore size distribution, which ultimately improved the performance of the HT-PEMFC. |
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Keywords: | High-temperature proton exchange membrane fuel cell Microporous layer Polyaniline nanowire Cathode Mass transfer |
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