发明授权
US07179500B2 Sub-micron electrolyte thin film on nano-porous substrate by oxidation of metal film
有权
亚微米电解质薄膜在纳米多孔基体上通过氧化金属膜
- 专利标题： Sub-micron electrolyte thin film on nano-porous substrate by oxidation of metal film
- 专利标题（中）： 亚微米电解质薄膜在纳米多孔基体上通过氧化金属膜
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申请号： US10449736申请日： 2003-05-29
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公开(公告)号： US07179500B2公开(公告)日： 2007-02-20
- 发明人: Yong-Il Park , Friedrich B. Prinz , Suk-Won Cha , Sang-Joon John Lee , Yuji Saito
- 申请人： Yong-Il Park , Friedrich B. Prinz , Suk-Won Cha , Sang-Joon John Lee , Yuji Saito
- 申请人地址： US CA Palo Alto JP Tokyo
- 专利权人： The Board of Trustees of the Leland Stanford Junior University,Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人： The Board of Trustees of the Leland Stanford Junior University,Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人地址： US CA Palo Alto JP Tokyo
- 代理机构： Lumen Intellectual Property Services
- 主分类号： B05D5/12
- IPC分类号： B05D5/12 ; H01M4/82 ; C23C14/00
摘要：
A fluid impermeable thin film is fabricated on a porous substrate by depositing a material having a certain spatial oxidation expansion. After deposition, the material is oxidized whereby the deposited material expands and forms a void free film on top of the porous substrate. The snuggly contacting grain boundaries of the void free film may recombine to a continuous thin film that has a thickness of only a fraction of 1 μm and is substantially fluid impermeable. The small film height contributes to a high ionic conductivity that makes the thin film a preferred choice for a fuel cell electrolyte membrane enabling efficient fuel cell operation at temperatures well below 500° C.