The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2014
Filed:
Jan. 29, 2010
Jiaxiang Wang, Chengdu, CN;
Kaiping Wu, Chengdu, CN;
Xiaobing You, Chengdu, CN;
Pin Xu, Chengdu, CN;
Yu Wang, Chengdu, CN;
Yun LU, Chengdu, CN;
Rulan Liao, Chengdu, CN;
Jiaxiang Wang, Chengdu, CN;
Kaiping Wu, Chengdu, CN;
Xiaobing You, Chengdu, CN;
Pin Xu, Chengdu, CN;
Yu Wang, Chengdu, CN;
Yun Lu, Chengdu, CN;
Rulan Liao, Chengdu, CN;
Chengdu Jingyuan New Materials Technology Co., Ltd., Chengdu, CN;
Abstract
The present invention discloses a high compact density nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and methods of its preparation. A preparation method of this battery cathode material is as follows: (A) preparing a nickel-cobalt-manganese multi-element intermediate with dopants by co-precipitation or chemical synthesis; (B) preparing a mixture by mixing said multi-element intermediate with a lithium salt; (C) pre-treating the said mixture, then adding into it polyvinyl alcohol and mixing uniformly; (D) pressing the resulting material into lumps, calcining the lumps at 800˜950° C., cooling after its removal from the furnace, crushing, passing through a 400 mesh sieve; (E) calcining the resulting power at 700˜800° C., cooling after its removal from the furnace, crushing and sieving to obtain a product. The lithium battery cathode material obtained using the above-described method has the formula LiNiCoMnMO. The cathode material has non-agglomerated single crystal particles. The material has a particle size ranging from 0.6˜30 μm, a compact density of 3.5˜3.7 g/cm, and an initial discharge capacity of 150˜165 mAh/g, with excellent cycling and safety performance.