Modified lithium nickel cobalt manganate material

Abstract

The invention discloses a modified lithium nickel cobalt manganate material. The modified lithium nickel cobalt manganate material comprises the following raw materials: 800-1,000 parts of lithium nickel cobalt manganate, 10-18 parts of nano graphene, 3-5 parts of microcrystalline silicon powder, 5-8 parts of nanocarbon particles, 5-6 parts of carbon fibers, 2-5 parts of iron boride, 4-5 parts of antimony pentoxide, 3-5 parts of silver hexafluorophosphate, 2-4 parts of tetrahydroxy sodium cuprate, 2-4 parts of maleic anhydride grafted compatilizer, 5-6 parts of ethylene diamine tetraacetic acid, 4-5 parts of titanate coupling agent, 5-6 parts of modified copper powder, 4-5 parts of conductive copper powder, 5-8 parts of nanometer aluminum powder and 10-25 parts of deionized water. The modified lithium nickel cobalt manganate material has the advantages of advanced technology, wide raw material resource, low cost, high discharge capacity, long service life and the like; meanwhile, the material has no toxins and environmental pollution; and therefore, the consistency of the industrialization and the cruising power of the power batteries are ensured.

Description

technical field [0001] The invention relates to the technical field of chemical energy materials, in particular to a modified nickel-cobalt lithium manganese oxide material. Background technique [0002] Lithium iron phosphate electrode materials are mainly used in various lithium-ion batteries. Compared with LiMn2O4 with spinel structure and LiCoO2 with layered structure, which are the traditional cathode materials for lithium-ion secondary batteries, LiMPO4 has wider sources of raw materials, lower prices and no environmental pollution. In the current existing technology, lithium iron phosphate has its unique advantages as a cathode material for lithium-ion batteries: (1) relatively high theoretical specific capacity of 170mAh / g; (2) good thermal and chemical stability; ( 3) Low cost, low toxicity and good safety performance; (4) Long cycle life. However, due to the defects of low electrical conductivity and low lithium ion conductivity of lithium iron phosphate, the low...

AI Technical Summary

Problems solved by technology

However, due to the defects of low electrical conductivity and low lithium ion conductivity of lithium iron phosphate, the battery has poor low temperature performance and poor rate discharge performance.