Michael Raymond Slater

US Patent:

20180248180, Aug 30, 2018

Filed:

Feb 13, 2018

Appl. No.:

15/895233

Inventors:

- Ganzhou, CN
Keith D. Kepler - Hercules CA, US
Robbert M. Vermeulen - Pleasant Hill CA, US
Floris Tsang - Walnut Creek CA, US
Phillip Hailey - Oakland CA, US
Michael Slater - Oakland CA, US

International Classification:

H01M 4/36
H01M 4/131
H01M 4/1315
H01M 4/1391
H01M 4/13915
H01M 4/505
H01M 4/525
H01M 4/48
H01M 10/0525
H01M 4/13
H01M 4/139
H01M 4/04

Abstract:

A composite for the cathode of Li-ion battery is disclosed and comprises: a base active material represented by Li(NCoMn)Owherein 0≤a≤0.5, 0≤b≤0.4, 0≤c≤0.6, with b+c

US Patent:

20150311514, Oct 29, 2015

Filed:

Apr 24, 2015

Appl. No.:

14/696133

Inventors:

- Hayward CA, US
Hongjian LIU - Hercules CA, US
Floris TSANG - Walnut Creek CA, US
Robbert VERMEULEN - Pleasant Hill CA, US
Phillip HAILEY - Oakland CA, US
Michael SLATER - Oakland CA, US

International Classification:

H01M 4/36
C01G 53/00
H01M 4/52
H01M 4/04
H01M 4/48
H01M 4/505

Abstract:

Li-ion cathode materials with improved performance characteristics and precursors to prepare such materials are disclosed. The precursors consist of complex, mixed alkali transition metal oxides of the formula LiA(MnNiM)O, where M represents one or more selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1.4, y is between 0.1 and 0.5, and x+y is between 1.1 and 1.5, a+b+c=1, the value of d depends on the proportions and average oxidation states of the cation elements Li, A, Mn, Ni and M such that the combined positive charge of the cation elements is balanced by the number of oxygen anions, A represents one or more elements selected from Na, K and Cs. The Li-ion cathode materials are produced by exchange of element(s) A for Li under mild conditions to limit the degree of structural reorganization that occurs during the reaction.