Sintered lithium complex oxide

• Main Authors: KITAYAMA HIROAKI, MIURA TAMAKI, AKAGI RYUICHI, MIYAKUBO HIROSHI, SAITO TAKAMITSU, ISHIKAWA YOSHINOBU, NISHIMURA KENICHI
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; 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

A sintered lithium complex oxide having excellent high-rate discharge characteristics; a positive electrode composition for batteries, which uses the sintered lithium complex oxide; a positive electrode for batteries; and a lithium ion battery. The sintered lithium complex oxide is obtained by sintering fine particles of lithium complex oxide together, and is characterized in that the peak pore size giving the maximum differential pore volume is 0.80-5.00 [mu]m, that the total pore volume is 0.10-2.00 mL/g, that the average particle size is not less than the above-specified peak pore size but not more than 20 [mu]m, that there is a sub-peak giving a differential pore volume not less than 10% of the maximum differential pore volume on the smaller pore size side with respect to the above-specified peak pore size, that the pore size corresponding to the sub-peak is more than 0.50 [mu]m but not more than 2.00 [mu]m, that the BET specific surface area of the sintered lithium complex oxide is 1.0-10.0 m2/g, and tha