In addition, the active material can include a binder inert to the electrolyte, for example, polymers and copolymers of polysulfone resin, polyethylene resin, polypropylene resin, fluorinated ethylene propylene resin or a fluorocarbon, such as polytetrafluoroethylene or chloro-fluorinated hydrocarbon polymer, that binds the particles of conducting material together in a porous manner.