发明名称 |
GAS DIFFUSION SUBSTRATE |
摘要 |
A gas diffusion substrate includes a non-woven network of carbon fibres, the carbon fibres are graphitised but the non-woven network has not been subjected to a graphitisation process. A mixture of graphitic particles and hydrophobic polymer is disposed within the network. The longest dimension of at least 90% of the graphitic particles is less than 100 μm. A process for manufacturing gas diffusion substrates includes depositing a slurry of graphitised carbon fibres onto a porous bed forming a wet fibre network, preparing a suspension of graphitic particles and hydrophobic polymer, applying onto, and pulling the suspension into, the network, and drying and firing the network. Another process includes mixing a first slurry of graphitic particles and hydrophobic polymer with a second slurry of graphitised carbon fibres and liquid forming a third slurry, depositing the third slurry onto a porous bed forming a fibre-containing layer, and drying and firing the layer. |
申请公布号 |
CA2569541(A1) |
申请公布日期 |
2005.12.29 |
申请号 |
CA20052569541 |
申请日期 |
2005.06.15 |
申请人 |
JOHNSON MATTHEY PUBLIC LIMITED COMPANY;TECHNICAL FIBRE PRODUCTS LIMITED |
发明人 |
ROWE, JULIA MARGARET;QUAYLE, GEORGE THOMAS;SHARMAN, JONATHAN DAVID BRERETON;SIODLAK, JULIAN ANDREW;WALKER, NIGEL JULIAN |
分类号 |
H01M4/86;H01M4/88;H01M4/96;H01M8/02;H01M8/10 |
主分类号 |
H01M4/86 |
代理机构 |
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代理人 |
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地址 |
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