Electrode substrate for battery and process for preparing...

Details Electrode substrate for battery and process for preparing... Electrode substrate for battery and process for preparing...

H - Electricity

01

M

H01M 4/80 (2006.01) H01M 4/66 (2006.01)

Patent

CA 2179347

An electrode substrate, for a battery, as a support for an active material used in a collector for a battery, comprising a metallic porous structure possessing interconnecting pores with a porosity of not less than 90% and a number of pores per cm of not less than 10 and having an Fe/Ni two-layer structure wherein Fe constitutes the interior of a skeleton of a porous body constituting the porous structure with the surface portion of the skeleton coated with Ni. Preferably, Fe constituting the interior of the skeleton has a purity of not less than 98% by weight, and the thickness of the nickel coating layer having an Fe content of not more than 10% by weight is 0.1 to 10 µm. The ratio of thickness of the Fe-diffused layer to the thickness of the Ni coating layer is regulated to not more than 0.65 by forming a metallic porous body of Fe using a porous resin as a substrate, plating the metallic porous body with Ni, heat treating the plated body.

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