LITHIUM ION BATTERY

• Main Authors: YAGI, Minoru, NOZUE, Mitsuru
• Format: Patent
• Language: English
• Published: 20.06.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A lithium ion battery E comprises a positive electrode terminal, a negative electrode terminal, and a battery case, which is an airtight container, and an electrode body is accommodated inside the battery case. The electrode body has a positive electrode current collector, a positive-electrode electrode plate, a negative electrode current collector, and a negative-electrode electrode plate, and the positive-electrode electrode plate and the negative-electrode electrode plate form a laminated structure via a separator. Further, a metal ion removal agent is placed in a gap portion in the battery case. The metal ion removal agent has a transition metal ion adsorption capability, and preferably has a moisture removal capability, and is preferably made of a zeolite, in particular, an A-type zeolite ion-exchanged with Ca. Such a lithium ion battery is capable of capturing transition metal ions dissolved from a positive electrode active material, which improves battery lifetime properties.