Manufacturing method of positive electrode composite material of lithium ion battery

Abstract

The present disclosure provides a manufacturing method of a positive electrode composite material of a lithium ion battery. The manufacturing method includes performing a first dry-mixing process to mix a positive electrode active substance with a lithium ion conductor, performing a second dry-mixing process to attach the lithium ion conductor onto the positive electrode active substance, and a thermal treatment process to form an interface phase between the positive electrode active substance and the lithium ion conductor. The interface phase is different from a crystalline phase of the positive electrode active substance and a crystalline phase of the lithium ion conductor.

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