| 摘要 |
PURPOSE:To make it possible to prevent generation of external injuries thereon like bruises and/or wounds during its manufacture and use, and make it to endure severe service conditions, by constituting at least one of the respective terminal plates of its positive and negative electrodes of a stainless steel plate coated with specific combined electroless nickel plating coats. CONSTITUTION:Either one or both of the respective terminal plates 6, 7 of its positive and negative electrodes is made in a solid construction by using a stainless steel plate coated with combined electroless nickel plating coats formed by dispersion of the fine powder of ceramics or metallic fine powder thereon. It is thereby prevented from suffering external injuries like bruises and/or wounds generated during its manufacture and use so that its good appearance can be maintained; besides, perforation, etc., through the terminal plates can be avoided even in such a serve service condition that a heavy load is concentrated on a part thereof because it is formed at an acute angle. Therefore, accidents like leakage of its electrolytic solution, etc., can be prevented. |
