Title:
電気化学的リチウム蓄電池の正極用電気化学的活物質
Document Type and Number:
Japanese Patent JP4965068
Kind Code:
B2
Abstract:
A new electrochemically active material (I) is obtained by substitution of part of the nickel in a monophase mixed nickel-lithium (1:1) oxide with (i) lithium, (ii) manganese, (iii) at least one of aluminum, boron, gallium, magnesium, zinc, iron, copper, titanium, zirconium, vanadium, gallium and/or silicon and optionally (iv) cobalt. A new electrochemically active material, obtained by substitution of part of the nickel in a monophase mixed nickel-lithium oxide of the LiNiO 2type, is of formula Li (M 1>(1-a-b-c)Li aM 2>bM 3>c) O 2(I) and has an R value of 0.40 to 0.90 exclusive (preferably 0.60 to 0.85 exclusive), irrespective of the state of charge. a : 0.02 - 0.25 (excluding 0.02); b, c : 0 - 0.30 (excluding 0.30); (a + b + c) : less than 0.50; M 3>aluminum, boron and/or gallium; M 2>magnesium and/or zinc; M 1>Ni (1-x-y-z)Co xMn yM 4>z; M 4>iron, copper, titanium, zirconium, vanadium, gallium and/or silicon; x : 0 - 0.70 (excluding 0.70); y : 0.10 - 0.55 (excluding 0.55); z : 0 - 0.30 (excluding 0.30); (1 - x - y - z) : more than 0.20; b + c + z : more than zero; R : (1 - a - b - c) . (3 - ((n l/n m+ d ox) / (4 - 2b - 3c)) . (2 - b - 2c)); n lmolar content of lithium; n msum of the molar contents of Ni, Mn, Co and M 4>; and M 1>overall degree of oxidation of M 1>. Independent claims are also included for: (1) positive electrodes of rechargeable lithium batteries, comprising a conductive support covered with an active layer containing (I); and (2) rechargeable lithium batteries having at least one electrode containing (I) or having the claimed positive electrodes.
Inventors:
Christian jjorday
Claudette Audrey
Jiyan-Pierre Boob
Filip Beyansan
Andre Roussel
Claudette Audrey
Jiyan-Pierre Boob
Filip Beyansan
Andre Roussel
Application Number:
JP2004295689A
Publication Date:
July 04, 2012
Filing Date:
October 08, 2004
Export Citation:
Assignee:
SAFT
International Classes:
C01G53/00; H01M4/525; H01M4/131; H01M4/50; H01M4/505; H01M4/52; H01M4/587; H01M10/052; H01M10/0525; H01M4/1391; H01M4/58; H01M6/16
Domestic Patent References:
| JP8078009A | ||||
| JP2003234102A | ||||
| JP2002110167A | ||||
| JP2002124261A |
Attorney, Agent or Firm:
Yoshimi Saigo