A conductive and hydrophilic bipolar plate coating for enhanced proton exchange membrane fuel cell performance and water management
| Autor: | Kevin W. Kirby, Richard H. Blunk, Andrew P. Nowak, Tina T. Salguero, Feng Zhong |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Contact resistance Energy Engineering and Power Technology chemistry.chemical_element Proton exchange membrane fuel cell Carbon black engineering.material Silane chemistry.chemical_compound chemistry Chemical engineering Coating engineering Wetting Electrical and Electronic Engineering Physical and Theoretical Chemistry Electroplating Carbon |
| Zdroj: | Journal of Power Sources. 210:138-145 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2012.03.005 |
| Popis: | a b s t r a c t Electrically conductive and hydrophilic coatings for proton exchange membrane fuel cell (PEMFC) stain- less steel bipolar plates have been developed in order to minimize voltage losses at the plate and gas diffusion layer (GDL) interface and facilitate liquid water transport in plate channels for efficient stack operation. The coatings are based on a multifunctional silane, 1,2-bis(triethoxysilyl)ethane (BTSE), mixed with conductive, hydrophilic carbon black. Vulcan ® XC72 carbon black was modified with either polar phenylsulfonic acid (PSA) or carboxylic acid (COOH) groups to increase hydrophilic character and wet- ting behavior. Wetting and electrical contact resistance performance was compared with coatings based on nano-particle titania and silica. These conductive silane and carbon composite coating precursors are conveniently formulated in alcohol solution for scalable application via spray coating. Cured films exhibit negligible contact resistance increase ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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