Mitsubishi Denki Kabushiki Kaisha

Syo Shiraga

Shigeru Aihara

Hisashi Shiota

Yasuhiro Yoshida

Michio Murai

Kouji Hamano

Takayuki Inuzuka

Tetsuhide Yokoyama

A paste-like active material mixture prepared by mixing an active material powder and a particulate material comprising a polymer soluble in a nonaqueous electrolytic solution is applied to, e.g. collectors and to a uniform thickness, and then dried to form positive and negative electrodes containing an active material powder and a particulate polymer. The two electrodes are assembled into an electrode laminate into which the foregoing electrolytic solution is then injected.

Lithium ion secondary battery

A lithium ion battery comprising a positive electrode a negative electrode and a separator for retaining an electrolyte, characterized in that as an adhesive for bonding said positive electrode to said separator and said negative electrode to said separator there is used a thermosetting adhesive comprising a mixture of at least one organic vinyl compound containing two or more vinyl groups per molecule, a reaction catalyst and a volatile organic solvent.

Adhesive for battery, battery using the same and method of fabricating the same

A uniform mixture of a powdered active material , conductive fiber , and a binder resin is applied to a polytetrafluoroethylene plate, etc. to a prescribed thickness and dried to form a sheet electrode . A pair of electrodes are adhered to a separator to make an electrode laminate . A battery is formed of the electrode laminate or a plurality of the electrode laminates

Electrode for lithium ion secondary battery and lithium ion secondary battery using the same

A paste-like active material mixture prepared by mixing an active material powder and a particulate material comprising a polymer soluble in a nonaqueous electrolytic solution is applied to, e.g., collectors,and,to a uniform thickness, and then dried to form positive and negative electrodes,containing an active material powder and a particulate polymer. The two electrodes are assembled into an electrode laminate into which the foregoing electrolytic solution is then injected.

Method of producing a lithium ion secondary battery and a lithium ion secondary battery produced thereby

A thin battery includes a flat battery body having a positive electrode and a negative electrode having an electrolyte layer disposed between the electrodes. A flexible encapsulating bag seals the battery body with a sealing portion. A positive electrode collector tab and a negative electrode collector tab are respectively connected to the positive and negative electrodes. The tabs penetrate the encapsulating bag. At least one of the tabs includes first and second collector tabs and a safety device so that an electrical connection between the first and second collector tabs may be interrupted when the internal pressure of the encapsulating bag exceeds a predetermined value.

Growing community of inventors

Tokyo, Japan

Syo Shiraga