Process for producing positive electrode active material for lithium secondary battery
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 18, 2007
Grant Date -
Oct 6, 2005
app pub date -
May 13, 2005
filing date -
Mar 31, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To provide a process for producing a lithium-cobalt composite oxide for a positive electrode of a lithium secondary battery excellent in volume capacity density, safety, charge and discharge cyclic durability, press density and productivity, by using in expensive cobalt hydroxide and lithium carbonate. A mixture having a cobalt hydroxide powder and a lithium carbonate powder mixed so that the atomic ratio of lithium/cobalt would be from 0.98 to 1.01, is fired in an oxygen-containing atmosphere at from 250 to 700.degree. C., and the fired product is further fired in an oxygen-containing atmosphere at from 850 to 1,050.degree. C., or such a mixture is heated at a temperature-raising rate of at most 4.degree. C./min in a range from 250 to 600.degree. C. and fired in an oxygen-containing atmosphere at from 850 to 1,050.degree. C.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully