Laminar battery with coiled electrodes which has improved output as localized short circuits are prevented by bulge on part of electrode

摘要

Laminar battery comprises laminated electrode made up of stratified sheets of positive and negative plates with a separator between them. One of the plates includes a bulge which juts out beyond the side of the other plate and which comprises a layer preventing localized short circuits. An Independent claim is also included for method for making the electrode by: a) formation of electrode plate in which one plate is formed comprising body of electrode and bulge; b) formation of layer of polymer mixture in which mixture is dissolved in suitable solvent so that it can adhere to surface of electrode comprising bulge; c) deposition of polymer; and d) drying to obtain layer which prevents short circuits.