Patent US5294498A successfully refreshed from Google Patents.
US5294498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode material, method for producing it and non-aqueous electrolyte cell employing such anode materials
Assignee: Sony Corp
•
Filing: 1992-02-28
•
Granted: 1994-03-15
•
Expires: 2012-02-28
Abstract
Abstract PCT No. PCT/JP92/00238 Sec. 371 Date Nov. 2, 1992 Sec. 102(e) Date Nov. 2, 1992 PCT Filed Feb. 28, 1992 PCT Pub. No. WO92/16026 PCT Pub. Date Sep. 17, 1992.An anode material composed mainly of a difficultly graphatizable carbon or coke (easily graphatizable coke) consisting essentially of carbon, phosphorus and oxygen, and containing phosphorus in an amount of 0.2 to 9.0 wt %, is disclosed. The anode material exhibits a peak in a 31P solid NMR spectrum in a range of +-100 ppm based on orthophosphoric acid, and a peak in a 2p orbital spectrum of a phosphorus atom in XPS of not more than 135 eV. The anode material is prepared by adding phosphoric acid or phosphorus oxides to an organic material or a carbonic material. A non-aqueous liquid electrolyte cell is produced from the above anode material, an Li-containing cathode and a liquid electrolyte.
Inventors
- 👤 Atsuo Omaru
- 👤 Hideo Azuma
- 👤 Yoshio Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:39
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/587; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
An anode material comprising as its primary portion a coke compound obtained by adding phosphorous pentaoxide to a material selected from the group consisting of a carbonic material or an organic material heat-treated at a temperature not higher than 700° C., wherein said coke compound consists essentially of carbon, phosphorus and oxygen, said coke compound containing phosphorous in an amount of 0.2 to 9.0 wt % and exhibiting a peak of a 31 P solid NMR spectrum in a range of ±100 ppm based on orthophosphoric acid, said coke compound exhibiting a peak in a 2p orbital spectrum of phosphorous atom of not more than 135 eV in X-ray photoelectron spectroscopy for a carbon-carbon linkage energy in the 1s orbital spectrum of a carbon atom of 284.6 eV.
Claim 2
Dependent Claim
128 words
An anode material comprising as its primary portion a coke compound obtained by adding phosphorous pentaoxide to a material selected from the group consisting of a carbonic material or an organic material heat-treated at a temperature not higher than 700° C., wherein said coke compound consists essentially of carbon, phosphorus and oxygen, said coke compound containing phosphorous in an amount of 0.2 to 9.0 wt % and exhibiting a peak of a 31 P solid NMR spectrum in a range of ±100 ppm based on orthophosphoric acid, said coke compound exhibiting a peak in a 2p orbital spectrum of phosphorous atom of not more than 135 eV in X-ray photoelectron spectroscopy for a carbon-carbon linkage energy in the 1s orbital spectrum of a carbon atom of 284.6 eV.
Claim 3
Independent Claim
85 words
A method for producing an anode material mainly composed of a coke compound consisting essentially of carbon, phosphorous and oxygen, said method comprising the steps of: adding a phosphorous compound, in an amount of 0.2 to 32 wt % in terms of phosphorus, to a material selected from the group consisting of an organic material or a carbonic material treated to a temperature of 700° C. or less and sintered to a coke to produce a mixture, and sintering the mixture in an inert atmosphere.
Claim 4
Independent Claim
85 words
A method for producing an anode material mainly composed of a coke compound consisting essentially of carbon, phosphorous and oxygen, said method comprising the steps of: adding a phosphorous compound, in an amount of 0.2 to 32 wt % in terms of phosphorus, to a material selected from the group consisting of an organic material or a carbonic material treated to a temperature of 700° C. or less and sintered to a coke to produce a mixture, and sintering the mixture in an inert atmosphere.
Claim 5
Dependent Claim
20 words
The method of claim 2 wherein the phosphorus compound is selected from group consisting of: phosphorus pentaoxide or orthophosphoric acid.
Claim 6
Dependent Claim
107 words
A non-aqueous liquid electrolyte cell comprising: an anode material mainly composed of coke compound consisting essentially of carbon, phosphorous and oxygen, said coke compound containing phosphorous in an amount of 0.2 to 9.0 wt % and exhibiting a peak in a 31 P solid NMR spectrum in a range of ±100 ppm based on orthophosphoric acid, said coke compound exhibiting a peak in a 2p orbital spectrum of a phosphorous atom of not more than 135 eV in X-ray photoelectron spectroscopy for a carbon-carbon linkage energy in the 1s orbital spectrum of a carbon atom of 284.6 eV, a cathode containing Li, and a non-aqueous liquid electrolyte.
Claim 7
Dependent Claim
107 words
A non-aqueous liquid electrolyte cell comprising: an anode material mainly composed of coke compound consisting essentially of carbon, phosphorous and oxygen, said coke compound containing phosphorous in an amount of 0.2 to 9.0 wt % and exhibiting a peak in a 31 P solid NMR spectrum in a range of ±100 ppm based on orthophosphoric acid, said coke compound exhibiting a peak in a 2p orbital spectrum of a phosphorous atom of not more than 135 eV in X-ray photoelectron spectroscopy for a carbon-carbon linkage energy in the 1s orbital spectrum of a carbon atom of 284.6 eV, a cathode containing Li, and a non-aqueous liquid electrolyte.
References Cited (Backward Citations)
JPS5235205A
Cited
JPS5547217A
Cited
JPS5835881A
Cited
JPS59228372A
Cited
JPS6036316A
Cited
JPS60182670A
Cited
JPS62122066A
Cited
JPS62283806A
Cited
JPS63164177A
Cited
EP0418514A1
Cited
US5093216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-14 | 1997-09-13 | 1998-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-14 | 2001-09-13 | 2002-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-14 | 2005-09-13 | 2006-03-15 | $7700.00 | Window Closed / Lapsed |