| 摘要 |
PURPOSE: A separator for attaching heat resistant insulating layer is provided to obtain ion conductivity by electrolyte as a medium, improving the adhesion between a porous substrate and the heat resistant insulating layer. CONSTITUTION: A separator(1) for attaching heat resistant insulating layer comprises a porous substrate(2), and a heat-insulating layer which comprises a heat-insulating particle and binder formed on one side of the porous substrate. The heat resistant insulating layer has a gradient towards the thickness direction. The porosity of a heat resistant insulating layer which is in the opposite side of the porous substrate is higher than the porosity of a heat resistant insulating layer(3,3') which is in the porous substrate. A high porosity in the heat insulating layer is 50-80% and a low porosity in the heat insulating layer is 40-60%. |
