Homogeneous coating of graphite felt by nickel electrodeposition to achieve light nickel felts with high surface area

We have developed a method of electrodeposition of nickel on a graphite felt of high specific surface area. We have solved the problems linked to the heterogeneous potential distribution in the 3D porous structure by using low concentrations of nickel salts and high applied current densities. This will result in being limited by the diffusion of ions to the electrode on the area of highest potential. The obtained nickel foams present interesting properties such as high surface areas and low densities.