Electrode structure for electrochemical cell

An electrode assembly adapted to be wound on a spool having first and second conductive contact members with a post therebetween supporting the contact members in fixed relationship and electrically insulated from each other to provide a battery stack for an electrochemical cell;

• the electrode assembly comprising
• a first electrode structure comprising
• an elongated substrate of thin, solid, metal having one edge and an opposite edge along its length;
• first electrode material adherent to said substrate;
• a plurality of deflective, resilient contact elements spaced along said one edge of said substrate;
• said opposite edge of said elongated substrate of said first electrode structure being protected by insulating material positioned at said opposite edge to prevent electrical contact with said second conductive contact member;
• a second electrode structure comprising
• an elongated substrate of thin, solid, metal having one edge and an opposite edge along its length;
• second electrode material adherent to said substrate;
• a plurality of deflective, resilient contact elements spaced along said one edge of said substrate;
• said opposite edge of said elongated substrate of said second electrode structure being protected by insulating material positioned at said opposite edge to prevent electrical contact with said first conductive contact member;
• porous insulating material separating said first and second electrode structures;
• said first and second electrode structures and said porous insulating material being adapted to be wound around said post with said contact elements of the first electrode structure bearing against said first conductive contact member to provide physical and electrical contact therewith and urging said insulating material against said second conductive contact member, and with said contact elements of the second electrode structure bearing against said second conductive contact member to provide physical and electrical contact therewith and urging said insulating material against said first conductive contact member.