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Novel hydrophobic coating process for gas diffusion layer in PEMFCs
- Authors
- Yoon, Gug-Ho; Park, Sung Bum; Kim, Eun Hyung; Oh, Myung-Hoon; Cho, Kyeong-Sik; Jeong, Soon Wook; Kim, Sungjin; Park, Yong-il
- Issue Date
- Oct-2009
- Publisher
- SPRINGER
- Keywords
- Proton exchange membrane fuel cell; Gas diffusion layer; (Hepradecafluoro-1,1,2,2-tetrahydrodecyl) triethoxysilane
- Citation
- JOURNAL OF ELECTROCERAMICS, v.23, no.2-4, pp.110 - 115
- Journal Title
- JOURNAL OF ELECTROCERAMICS
- Volume
- 23
- Number
- 2-4
- Start Page
- 110
- End Page
- 115
- ISSN
- 1385-3449
- Abstract
- The behavior of water and gas distribution in the gas diffusion layers (GDLs) of proton exchange membrane fuel cells (PEMFCs) were investigated analytically. In order to prevent the flooding phenomenon of the electrodes by the product water, gas diffusion layer is usually hydrophobed. Formerly, gas diffusion layer was partially coated with PTFE (polytetrafluroethylene) suspension but flaking-off of PTFE particles were observed. In this study, gas diffusion layer is coated with HTTS ((hepradecafluoro-1,1,2,2-tetrahydrodecyl)triethoxysilane)-derived layers having hydrophobic functional group. The influence of the HTTS coating on gas permeability and hydrophobicity of gas diffusion layer are analyzed and discussed.
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Related Researcher
- CHO, KYEONG SIK
- College of Engineering (Department of Materials Science and Engineering)