Solid solution lithium-containing transition metal oxide and lithium ion secondary battery

• Main Authors: ITO ATSUSHI, KABURAGI TOMOHIRO, OSAWA YASUHIKO
• Format: Patent
• Language: English
• Published: 03.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; 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 solid solution lithium-containing transition metal oxide includes a compound represented by chemical formula (1): Li1.5[NiaCobMnc[Li]d]O3, where a, b, c and d satisfy relationships: 0.39 a<0.75, 0 b 0.18, 0<c<1.00, 0.05 d 0.25, and a+b+c+d=1.5. The use of the solid solution lithium-containing transition metal oxide in a lithium ion secondary battery can contribute to decreasing the amount of hysteresis of the battery, achieving high energy efficiency, and ensuring a high discharge capacity.