| 摘要 |
PURPOSE:To improve the electrical contact between the anode active mass and a positive electrode can and improve the short-circuit current of a cell and improve the long-time storage performance by coating organic compounds onto the inner surface of the metal positive electrode can and forming the carbon film layer by heating and carbonizing the organic compounds. CONSTITUTION:As shown on the enlarged view 2 of the contact surface between the inner surface of a positive electrode can 1 and an anode active mass 3, electrical contact is formed through the carbon film 2 formed on the inner surface 1 of the positive electrode can 1. The carbon film 2 is prepared as follows: organic high polymer material, in particular the organic compound which constitutes the film forming material is used in single form or dissolved into a proper solvent, and said solution is applied onto the inner surface of the positive electrode can 1, and then the organic high polymer material is heated at high temperature with the positive electrode can 1, in the state shut-off from oxygen or in the inert environment, and the volatile components are removed, and only carbon is fixed on the inner surface of the positive electrode can 1. |
