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Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2013143358
Kind Code:
A
Abstract:

To provide a lithium secondary battery which is improved in output in a low-SOC region.

A lithium secondary battery of the invention comprises a positive electrode active material of a hollow structure having a shell part and a hollow part formed therein. The positive electrode active material has a layered crystal structure, and comprises a lithium transition metal oxide including at least one kind of metal element MT of Ni, Co and Mn. In a powder X-ray diffraction pattern using CuKα rays, the positive electrode active material has a ratio (A/B) of the half-value width of a diffraction peak A obtained from (003) plane to the half-value width of a diffraction peak B obtained from (104) plane of 0.7 or smaller. The content of a compound including Li and CO3 is 0.2 mass% or less.


Inventors:
NAGAI HIROYOSHI
Application Number:
JP2012004500A
Publication Date:
July 22, 2013
Filing Date:
January 12, 2012
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M10/052; C01G53/00; H01M4/131; H01M4/505; H01M4/525
Domestic Patent References:
JP2011065987A2011-03-31
JP2011119092A2011-06-16
JP2004253174A2004-09-09
JP2004196603A2004-07-15
JP2011113792A2011-06-09
JP2011116580A2011-06-16
Foreign References:
WO2011161754A12011-12-29
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane



 
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