Positive electrode material, method of production therefor, positive electrode for nonaqueous rechargeable battery, and nonaqueous rechargeable battery

• Main Authors: KONO SATOSHI, KISHIMI MITSUHIRO, OYA MASAYUKI
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2012
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Disclosed are: a positive electrode material that can constitute a composition containing a positive electrode mixture having minimal deterioration over time and which can be produced with excellent productivity; a method for production therefor; a nonaqueous rechargeable battery with excellent storage properties and which is resistant to swelling when stored under high temperatures; and an electrode that can be used to constitute said battery. The positive electrode material is provided by forming a coating layer made from an organic silane compound on the surface of a positive electrode active substance made from a lithium nickel compound oxide represented by the general composition formula Li1 + xMO2 [where -0.5 <= x <= 0.5, and M represents a group of at least two elements containing Ni and at least one element selected from Mn and Co, and with the percentages (mol%) of Ni, Mn and Co, which constitute M, set to a, b and c respectively, being 20 <= a <(100, 50 <= a + b + c <= 100], wherein the titer when t