CATHODE MATERIAL, AND CATHODE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Title:

CATHODE MATERIAL, AND CATHODE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Document Type and Number:

WIPO Patent Application WO/2021/012705

Kind Code:

A1

Abstract:

The present application relates to a cathode material, and a cathode and an electrochemical device including the same. The cathode material includes: a plurality of first particles, wherein the first particle includes a secondary particle composed of a plurality of third particles, the third particle is a primary particle, the first particle has the average particle diameter of 5 μm to 20 μm, the third particle has the average particle diameter of 200 nm to 700 nm, and the first particle includes a first lithium-containing transition metal oxide; and a plurality of second particles, wherein the second particle includes a plurality of fourth particles and/or a secondary particle composed of a plurality of the fourth particles, the fourth particle is a primary particle, the second particle has the average particle diameter of 3 μm to 5 μm, the fourth particle has the average particle diameter of 800 nm to 5 μm, and the second particle includes a second lithium-containing transition metal oxide. The electrochemical device including the cathode material is significantly improved in the aspects of energy density, capacity attenuation and service life.

Inventors:

LIU WENYUAN (CN)
PENG GANG (CN)
LANG YE (CN)
XU LEIMIN (CN)

Application Number:

PCT/CN2020/082246

Publication Date:

January 28, 2021

Filing Date:

March 31, 2020

Export Citation:

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Assignee:

NINGDE AMPEREX TECHNOLOGY LTD (CN)

International Classes:

H01M4/36; H01M4/131; H01M4/505

Foreign References:

CN110416511A	2019-11-05
CN103296265A	2013-09-11
CN106099059A	2016-11-09
CN108352525A	2018-07-31
CN104282903A	2015-01-14
US20160181611A1	2016-06-23

Other References: