METHOD FOR PRODUCTION OF PRECURSOR PARTICLES, PRECURSOR PARTICLE PRODUCED BY THIS METHOD, AND METHOD FOR PRODUCTION OF ACTIVE CATHODE PARTICLES Russian patent published in 2021 - IPC H01M4/525 H01M4/1391 

Abstract RU 2749604 C1

FIELD: electric elements.

SUBSTANCE: invention relates to a method for producing a cathode of a lithium-ion accumulator, particularly, to a method for producing precursor particles without using organic chelating additives for changing the deposition rate, to a method for producing active cathode particles therefrom, and to a precursor particle produced by such a method. In the method, by supplying various types of anionic compositions and/or cationic compositions and adjusting the pH in accordance with the substance, the particles are deposited forming a suspension, the suspension is separated, treated with water and dried resulting in a cathode particle precursor, the cathode particle precursor is mixed with a lithium source and calcined resulting in a core-shell structure of active cathode particles.

EFFECT: increased electrochemical characteristics, reduced corrosion.

20 cl, 15 dwg, 4 tbl, 3 ex

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RU 2 749 604 C1

Authors

Yonemoto, Bryan

Zhang, Xiao

Guo, Huijie

Liu, Jianzhao

Dates

2021-06-16Published

2019-05-21Filed