Method of manufacturing a sponge-type support for an electrode in an electrochemical cell
First Claim
1. 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 μ
m to 400 μ
m; and
(b) next heat-treating said impregnated organic material sponge to remove organic material therefrom to form said metal sponge support.
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Accused Products
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 μm to 400 μm, and (b) heat-treating the impregnated sponge to remove the organic material.
45 Citations
12 Claims
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1. 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:
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(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 μ
m to 400 μ
m; and(b) next heat-treating said impregnated organic material sponge to remove organic material therefrom to form said metal sponge support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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:
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(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 μ
m to 400 μ
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.
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Specification