Ceramic porous substrate, reinforced composite electrolyte membrane using the same and membrane-electrode assembly having the same
AssigneeKorea Research Institute of Chemical Technology
InventorsYoung Talk Hong, Jong Ho Choi, Kyung Seok Yoon, Sang Young Lee
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Abstract
The present invention relates to a ceramic porous substrate, a reinforced composite electrolyte membrane using the same, and a membrane-electrode assembly having the same. The ceramic porous substrate comprises: a porous polymer base; and void structures formed on the surface of the porous polymer base by linking the space of the inorganic nanoparticles using a polymer binder or a silane-based inorganic binder. The ceramic porous substrate has improved mechanical properties compared to the porous polymer substrate alone, and the void structures thereof can be controlled in various ways.
Claims3
A reinforced composite electrolyte membrane comprising:
- a polymer-ceramic porous substrate comprising:
- a porous polymer base;
- and
- void structures formed on a surface of the porous polymer base by linking spaces of inorganic nanoparticles using a polymer binder or a silane-based inorganic binder;
- and
- wherein a hydrogen ion conductive polymer electrolyte for polymer electrolyte fuel cells or direct methanol fuel cells is impregnated in the void structures;
- wherein the hydrogen ion conductive polymer electrolyte is a uniform mixture of 1-99.999 wt % of a hydrogen ion conductive polymer and 0.001-10 wt % of one or a mixture of two or more selected from the group consisting of SiO2, TiO2, Al2O3, ZrO2 and BaTiO3.
Dependencies are inferred from the claim text.