EP0474183A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A secondary battery or cell with a non-aqueous electrolyte
Assignee: Panasonic Holdings Corp
•
Filing: 1991-09-03
•
Granted: —
•
Expires: 2011-09-03
Abstract
Abstract A secondary battery [2] with non-aqueous electrolyte having a high voltage and capacity and an improved cycle property, characterized in that an anode [4] is comprised of graphite spherical particles such as spherical cokes and meso carbon micro bead; a cathode [4] is comprised of composite oxides containing lithium. In a case of an anode comprises composite carbon materials containing graphite spherical particles and carbon fibers, the carbon fiber improves the stiffness of the anode depolarizing mix to prevent the body made thereof from swelling and decomposing.
Inventors
- 👤 Yoshiyuki Ozaki
- 👤 Nobuo Eda
- 👤 Akiyoshi Morita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:53
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/587; H01M10/058; H01M10/0587; H01M4/13; H01M4/131; H01M4/133; H01M4/48; H01M4/50; H01M4/505; H01M4/52; H01M4/525; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
39 words
A secondary battery or cell with a non-aqueous electrolyte comprising: a cathode comprising composite oxides containing lithium metal; a non-aqueous electrolyte; and an anode capable of being recharged repeatedly, said anode comprising graphite material that contains graphitizing spherical particles.
Claim 2
Dependent Claim
62 words
The secondary battery or cell with a non-aqueous electrolyte according to claim 1, wherein said graphite material is at least one selected from the group consisting of meso carbon micro bead made of mesophase sphere produced in the carbonization process of pitch as a raw material and spherical cokes including fluid cokes or gilsonite cokes and subjected to heat treatment for graphitization.
Claim 3
Dependent Claim
36 words
The secondary battery or cell with a non-aqueous electrolyte according to claim 1, wherein said graphite material has an lattice spacing (d002) of 3.42 Å or less, measured by a wide angle X ray diffraction method.
Claim 4
Dependent Claim
47 words
The secondary battery or cell with a non-aqueous electrolyte according to claim 1, wherein said cathode comprises at least one selected from the group consisting of LiCoO₂, LiMn₂O₄, or their any other composite oxides in which a part of Co or Mn is displaced by other elements.
Claim 5
Dependent Claim
76 words
A secondary battery with a non-aqueous electrolyte, comprising: a cathode comprising composite oxides containing lithium metal; a non-aqueous electrolyte; and an anode capable of being recharged repeatedly, in which said anode is at least one selected from the group consisting of meso carbon micro bead made of mesophase sphere produced in the carbonization process of pitch as a raw material and spherical cokes including fluid cokes and gilsonite cokes and subjected to heat treatment for graphitization.
Claim 6
Dependent Claim
34 words
The secondary battery with a non-aqueous electrolyte according to claim 5, wherein said graphite material has an lattice spacing (d002) of 3.36 Å to 3.42 Å measured by a wide angle X-ray diffraction method.
Claim 7
Dependent Claim
45 words
A secondary battery or cell with a non-aqueous electrolyte comprising: a cathode containing composite oxides with lithium metal; a non-aqueous electrolyte; and an anode capable of being recharged repeatedly, said anode is a composite carbon material containing carbon fiber and graphite material comprising spherical particles.
Claim 8
Dependent Claim
63 words
The secondary battery or cell with a non-aqueous electrolyte according to claim 7, wherein said graphite material is at least one selected from the group consisting of meso carbon micro bead made of mesophase sphere produced in the carbonization process of pitch as a raw material and spherical cokes including fluid cokes or gilsonite cokes and then subjected to heat treatment for graphitization.
Claim 9
Dependent Claim
35 words
The secondary battery or cell with a non-aqueous electrolyte according to claim 1, wherein said graphite material has a lattice spacing (d002) of 3.42 Å or less, measured by a wide angle X-ray diffraction method.
Claim 10
Dependent Claim
58 words
A secondary battery or cell with a non-aqueous electrolyte, comprising: a cathode containing composite oxides with lithium metal; a non-aqueous electrolyte; and an anode capable of being recharged repeatedly, in which said anode is a composite carbon material comprising carbon fibers and graphite materials, the carbon fiber content is 20 wt. % or less of the graphite material.
Claim 11
Dependent Claim
36 words
The secondary battery or cell with a non-aqueous electrolyle according to claim 10, the carbon fiber content in the composite carbon material is from 5 wt. % to 20 wt. % of the graphite material therein.
Claim 12
Dependent Claim
41 words
The secondary battery with a non-aqueous electrolyte according to claim 10, the carbon fiber in the composite carbon material is selected from the group consisting of a vapor phase growth carbon fiber, a pitch carbon fiber and a PAN carbon fiber.
Claim 13
Dependent Claim
66 words
A secondary battery or cell with a non-aqueous electrolyte, comprising: a cathode comprising composite oxides containing lithium metal; a non-aqueous electrolyte; and an anode capable of being recharged repeatedly, wherein said anode is a mixture of meso carbon micro bead comprising mesophase sphere and vapor phase growth carbon fibers, the content of the carbon fiber is from 5 to 15 wt. % of the micro bead.
References Cited (Backward Citations)
WO1990013924A2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.