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- W4293522975 abstract "The wettability of the flow channel surface has a great influence on proton exchange membrane fuel cell performance. A modification method using polytetrafluoroethylene (PTFE) of improving hydrophobicity of graphite plate without significant resistance rise is obtained and the contact angle with 8μL deionized water reaches 135°. The cathode plate is modified with this method and PTFE is removed from the crest. Then single-cells with the modified cathode plate and unmodified plate are assembled and tested, respectively. The peak power density increases by 6.37% at 30% cathode inlet relative humidity and decreases by 7.79% and 16.9% at 50% and 100% cathode inlet relative humidity. Based on this, we propose the explanation that the repulsive effect of hydrophobic flow channel surface on water can alleviate the membrane dryness at low relative humidity conditions, but hinder the gas from entering the gas diffusion layer at high relative humidity conditions." @default.
- W4293522975 created "2022-08-30" @default.
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- W4293522975 date "2022-08-01" @default.
- W4293522975 modified "2023-09-26" @default.
- W4293522975 title "Hydrophobic modification of flow channel surface and its effect on the performance of proton exchange membrane fuel cell" @default.
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- W4293522975 doi "https://doi.org/10.1016/j.ijhydene.2022.06.272" @default.
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