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Title: Lithium-excess cathode material and co-precipitation formation method

Abstract

A lithium-excess cathode material according to Li1+xNiaMnbCocModO2−y (0<0.3, 0≤a≤1, 0≤b≤1, 0≤c≤1, 0≤d≤0.2, 0≤y≤0.25) in the form of secondary spherical microparticles formed from primary spherical nanoparticles. The primary nanoparticles can in the range of ˜130 nm to 170 nm and the secondary in the range of ˜2-3 μm. A method of formation includes mixing a carbonates or hydroxides solution into a mixed solution of transition metal (M) ions with predetermined stoichiometry under stirring, and aging resulting transition metal carbonates or hydroxides at a predetermined temperature for period of time to produce primary nanoparticles of a predetermined size. A gas-solid interface reaction to uniformly creating oxygen vacancies without affecting structural integrity of Li-excess layered oxides is also provided.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1823850
Patent Number(s):
10978709
Application Number:
15/774,876
Assignee:
The Regents of the University of California (Oakland, CA)
DOE Contract Number:  
AC02-05CH11231; EE0007744
Resource Type:
Patent
Resource Relation:
Patent File Date: 11/15/2016
Country of Publication:
United States
Language:
English

Citation Formats

Meng, Ying Shirley, Zhang, Minghao, Liu, Haodong, Qian, Danna, and Fang, Chengcheng. Lithium-excess cathode material and co-precipitation formation method. United States: N. p., 2021. Web.
Meng, Ying Shirley, Zhang, Minghao, Liu, Haodong, Qian, Danna, & Fang, Chengcheng. Lithium-excess cathode material and co-precipitation formation method. United States.
Meng, Ying Shirley, Zhang, Minghao, Liu, Haodong, Qian, Danna, and Fang, Chengcheng. Tue . "Lithium-excess cathode material and co-precipitation formation method". United States. https://www.osti.gov/servlets/purl/1823850.
@article{osti_1823850,
title = {Lithium-excess cathode material and co-precipitation formation method},
author = {Meng, Ying Shirley and Zhang, Minghao and Liu, Haodong and Qian, Danna and Fang, Chengcheng},
abstractNote = {A lithium-excess cathode material according to Li1+xNiaMnbCocModO2−y (0<0.3, 0≤a≤1, 0≤b≤1, 0≤c≤1, 0≤d≤0.2, 0≤y≤0.25) in the form of secondary spherical microparticles formed from primary spherical nanoparticles. The primary nanoparticles can in the range of ˜130 nm to 170 nm and the secondary in the range of ˜2-3 μm. A method of formation includes mixing a carbonates or hydroxides solution into a mixed solution of transition metal (M) ions with predetermined stoichiometry under stirring, and aging resulting transition metal carbonates or hydroxides at a predetermined temperature for period of time to produce primary nanoparticles of a predetermined size. A gas-solid interface reaction to uniformly creating oxygen vacancies without affecting structural integrity of Li-excess layered oxides is also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {4}
}