发明名称 |
GAS DIFFUSION ELECTRODE MATERIAL, PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING GAS DIFFUSION ELECTRODE |
摘要 |
A reaction layer material for a gas diffusion electrode and a production process therefor, which is obtained by mixing a polytetrafluoroethylene dispersion with a surfactant-containing aqueous solution containing hydrophilic fine particles and a hydrophobic carbon black, each dispersed therein satisfying the relationships: 0.5 < D < 2 and rs < 2rp, wherein D = rc/rp, rs represents the average particle diameter of the hydrophilic fine particles dispersed in the surfactant-containing aqueous solution, rc represents the average particle diameter of the hydrophobic carbon black dispersed in the surfactant-containing aqueous solution, and rp represents the average particle diameter of polytetrafluoroethylene fine particles in the polytetrafluoroethylene dispersion to be used; and then adding a self-organizing agent to the mixture and mixing therewith. A jet mill is used for dispersing the hydrophobic carbon black. The liquid obtained by adding and mixing the self-organizing agent is spray-dried or is applied by spraying. <IMAGE> |
申请公布号 |
EP1055748(A4) |
申请公布日期 |
2007.12.19 |
申请号 |
EP19990972265 |
申请日期 |
1999.06.28 |
申请人 |
TOAGOSEI CO., LTD.;MITSUI CHEMICALS, INC.;KANEKA CORPORATION;FURUYA, NAGAKAZU |
发明人 |
FURUYA, NAGAKAZU |
分类号 |
C25B11/03;H01M4/86;H01M4/88;H01M4/90;H01M4/96;H01M8/10 |
主分类号 |
C25B11/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|