porous nickel electrode substrate

摘要

A porous nickel electrode substrate having a central high conductivity core (12) sandwiched between two layers (14) of porous conductive material such as nickel foam or nickel felt. The porous conductive material may be made by plating a foam with nickel then sintering the composite. By selectively controlling the plating of nickel on the porous foam material the conductivity of the substrate may be made to vary along its length.