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Method of preparing a composite cathode active material for rechargeable electrochemical cell

Patent image
CCDC ARL

A method of preparing a composite cathode active material having superior cell characteristics includes mixing and milling starting material, carbon and an organic complexing agent. The mixture is heated at a first temperature in an inert atmosphere to form a composite precursor, and then the precursor is ground and heated at a second temperature in an inert atmosphere to produce a carbon-containing composite cathode material having high electronic conductivity. The said composite cathode has a general formula of LiFe1−xMxPO4—C, within 0≦x<1, M is selected from the group consisting of Co, Ni, V, Cr, Mn and a mixture thereof.

Inventors: 
Zhang, Shengshui; Xu, Kang; Jow, Richard T.
Patent Number: 
Technical domain: 
Electronics and Energy
FIle Date: 
2007-01-17
Grant Date: 
2010-11-02
Grant time: 
1,385 days
Grant time percentile rank: 
25
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY RES LABORATORY