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National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 工學院 > 依資料類型分類 > 期刊論文 >  Characterization of Teflon-like carbon cloth prepared by plasma surface modification for use as gas diffusion backing in membrane electrode assembly

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/128650

標題: Characterization of Teflon-like carbon cloth prepared by plasma surface modification for use as gas diffusion backing in membrane electrode assembly
作者: Lee, C.M.;Pai, Y.H.;Zen, J.M.;Shieu, F.S.
關鍵字: Plasma surface modification;Gas diffusion backing;Hydrophobic;property;Proton exchange membrane fuel cell;pem fuel-cells;water transport;catalyst layer;flow;performance;deposition;dispersion;polymers;paper
日期: 2009
Issue Date: 2012-12-07 14:57:31 (UTC+8)
關連: Materials Chemistry and Physics, Volume 114, Issue 1, Page(s) 151-155.
摘要: The hydrophobic property of carbon was largely improved by plasma treatment and the Teflon-like property was effectively applied to fabricate a gas diffusion backing (GDB) for use in membrane electrode assembly (MEA). The surface morphology, hydrophilic/hydrophobic property and electron conductivity of the as-prepared GDB was fully characterized. The water contact angle and SEM microstructure image of the CF(4), CHF(3) plasma-treated GDB were both indicated as similar to 130 degrees, and very few gas diffusion pores either sealed or blocked by excessive hydrophobic material residual. The measured resistivity values of CF(4) plasma, CHF(3) plasma, SF(6) plasma and commercial carbon were 0.45, 0.5, 0.47 and 0.49, respectively, which indicates that the electrical resistivity of carbon cloth with CF(4) plasma treatment was slightly lower than others. In cell performance test, the CF(4) plasma-treated modules could also produce better property than those MEAs prepared with CHF(3) plasma-treated GDB, SF(6) plasma-treated GDB and commercially available GDB, leading to the highest fuel cell performance with an optimal power output of 350 mW cm(-2). (C) 2008 Elsevier B.V. All rights reserved.
Relation: Materials Chemistry and Physics
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 薛富盛
[依教師分類] 曾志明

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