| 摘要 |
PURPOSE:To obtain nonaqueous electrolyte battery which ensures stability for a long period by previously washing a negative pole can and battery elements other than the electrolyte to be filled therein with thionyl chloride and thereafter assembling them into a battery under the dry air or inactive gas ambient. CONSTITUTION:The battery element 1-10, particularly a negative pole can 1, a separator 3, positive pole forming materials 4 and an upper paper 7 are washed by thionyl chloride before assembling a battery. This washing can be realized by immersing the elements into the thionyl chloride solution or by processing them in the thionyl chloride vapor. The immersing processing is usually continued for 3min or longer and the vapor processing is usually continued for an hour or longer. Thereby, water and organic impurity in the battery elements, particularly water and organic impurity in the positive pole 5 not eliminated sufficiently by the conventional heating process and vacuum processing and water in the separator 3 react with thionyl chloride, producing gases such as volatile sulfurous acid gas and hydrogen chloride gas and low molecular decomposed substances. These substances are exhausted during processing or elimination process for heating and eliminating washing solution after the processing. |
