Method of manufacturing a sponge-type support for an electrode in an electrochemical cell
AssigneeSaft
InventorsJacques Bouet, Bernadette Pichon
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Abstract
A method of manufacturing a sponge support made of a metal selected from nickel, copper and lead, including (a) impregnating a sponge made of an organic material based on polyurethane, polyester or polyether with a solution of a nitrite or a sulfate of the metal, the concentration of the solution being a function of the desired weight per unit area for the sponge made of metal, the sponge made of an organic material has a porosity in the range of from 96% to 98% and a pore-size in the range of from 200 .mu.m to 400 .mu.m, and (b) heat-treating the impregnated sponge to remove the organic material.
Claims12
A method of manufacturing a sponge support made of a metal selected from the group consisting of nickel, copper and lead, comprising the steps of:
- (a) first impregnating a sponge made of an organic material selected from the group consisting of polyurethane, polyester and polyether with a solution of a nitrate or a sulfate of said metal, the concentration of said solution is a function of the desired weight per unit area of said metal sponge support, said organic material sponge has a porosity in the range of from 96% to 98% and a pore-size in the range of from 200 .mu.m to 400 .mu.m;
- and
- (b) next heat-treating said impregnated organic material sponge to remove organic material therefrom to form said metal sponge support.
A method of manufacturing a sponge support made of a metal selected from the group consisting of nickel, copper and lead, comprising the steps of:
- (a) first impregnating a sponge made of an organic material selected from the group consisting of polyurethane, polyester and polyether with a solution of a nitrate or a sulfate of said metal, the concentration of said solution is a function of the desired weight per unit area of said metal sponge support, said organic material sponge has a porosity in the range of from 96% to 98% and a pore-size in the range of from 200 .mu.m to 400 .mu.m;
- (b) then drying said impregnated sponge to line the pores of the organic material with said metal nitrate or sulfate;
- and
- (c) next heat-treating said impregnated organic material sponge in a reducing atmosphere to remove organic material therefrom and to reduce the metal nitrate or sulfate to its metal to form said metal sponge support.
Dependencies are inferred from the claim text.