A high-voltage positive material composite synergistic carbon-coated lithium manganese iron phosphate positive material and a preparation method thereof

Abstract

The application discloses a high-voltage positive material composite synergic carbon-coated lithium manganese iron phosphate positive material and a preparation method thereof, and belongs to the technical field of lithium batteries. The high-voltage positive material LNMO is in-situ compounded with LMFP, and a double protection and a three-dimensional conductive network are constructed by combining a step-by-step carbon coating process, so that technical difficulties such as low electronic conductivity of a traditional LMFP material, serious manganese dissolution under high pressure, poor cycle stability and the like are fundamentally solved.

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