发明名称 |
SCREEN PRINTING PASTE AND METHOD FOR PRODUCING A GAS DIFFUSION ELECTRODE |
摘要 |
A screen-printing paste as a starting material for fabricating a gas diffusion electrode through screen-printing includes at least one polymer, at least one metallic catalyst, and a high-boiling solvent. The polymer is a binder including poly(butyl acrylate)-polymethacrylate copolymer, a poly(vinyl alcohol), and a poly(ethylene oxide). The polymer can be two polymers, a first being used for hydrophobicization and present in an amount of between 0 to 10% by weight based on a content of the metallic-catalyst, and a second being a binder. A screen-printing method of fabricating the electrode for a fuel cell includes forming a screen-printing layer having a thickness between 3 and 40 mum by applying the screen-printing paste to a base. The solvent and the polymer serve as a screen-printing medium. The screen-printing layer is baked to allow only residues of the solvent and the polymer to remain, which do not interfere with using the electrode in a fuel cell. The method uses a polybutylacrylate-polymethacrylate copolymer as a binder in the screen-printing paste. |
申请公布号 |
EP1118130(A2) |
申请公布日期 |
2001.07.25 |
申请号 |
EP19990953554 |
申请日期 |
1999.08.20 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
DATZ, ARMIN;SCHRICKER, BARBARA;WAIDHAS, MANFRED;OTSCHIK, PETER;SCHAFFRATH, WINFRIED |
分类号 |
B41M1/12;H01M4/86;H01M4/88;H01M4/90;H01M4/92;H01M8/10 |
主分类号 |
B41M1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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