NONAQUEOUS SECONDARY CELL AND ITS MANUFACTURING METHOD

摘要

The invention relates to a process for producing nonaqueous secondary battery comprising, in a battery case, positive and negative electrodes capable of intercalating and deintercalating lithium and a nonaqueous electrolyte containing a lithium salt, the electrodes being prepared by applying a water-dispersion electrode material mixture paste containing at least an active material capable of intercalating and deintercalating lithium and at least one conducting agent comprising a carbonaceous compound onto a collector and drying, wherein at least one of the electrodes is prepared from a water-dispersion electrode material mixture paste which is prepared by using a dispersion comprising water having dispersed therein at least one conducting agent together with a dispersion aid. The invention also relates to a nonaqueous secondary battery wherein at least one of the positive and negative electrode sheets is one prepared from a water-dispersion electrode material mixture paste which is prepared by using a dispersion comprising water having dispersed therein at least one conducting agent together with a dispersion aid. The water-dispersion paste used in the negative electrode sheet has a pH of 5 to 10. The thickness of the electrode material mixture on one side of the negative electrode is 5 to 80 mu m and that of the positive electrode is 90 to 180 mu m at the time of battery assembly.