US5246796A
Expired / Lapsed
US
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Nonaqueous-electrolyte secondary cell
Assignee: Sony Corp
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Filing: 1991-12-27
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Granted: 1993-09-21
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Expires: 2011-12-27
Abstract
Abstract A nonaqueous-electrolyte secondary cell is disclosed which comprises a positive and negative electrode and nonaqueous electrolyte. Each of the negative and positive electrode is formed of electrode mix layer comprises a binding agent and active material carrier or active material The electrodes are thus formed to satisfy the intensity ratio (I1/I2) of a first peak (P1) near a diffraction angle of 17.7° to a second peak (P2) near a diffraction angle of 18.5° in an X-ray diffraction pattern obtained with the Cukα radiation for the electrode mix layer is from 0.3 to 0.6.
Inventors
- 👤 Masayuki Nagamine
- 👤 Naoyuki Date
- 👤 Tomoaki Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:30
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/133; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M10/058; H01M10/0587; H01M4/04; H01M4/0402; H01M4/0404; H01M4/0416; H01M4/043; H01M4/0435; H01M4/131; H01M4/36; H01M4/62; H01M4/621; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A nonaqueous-electrolyte secondary cell comprising a negative electrode, a positive electrode and a nonaqueous electrolyte, at least one of the negative and positive electrodes containing a binding agent and an active-material carrier or active material, wherein the binding agent is polyvinylidene fluoride; the ratio of the intensity of a first peak near a diffraction angle (2θ, where θ is a Bragg angle) of 17.7° to the intensity of a second peak near a diffraction angle of 18.5° in an X-ray diffraction pattern obtained with the CuKα radiation for the negative and/or positive electrode containing the binding agent is from 0.3 to 0.6; and said one electrode is formed by drying a slurry of said binding agent, under controlled drying conditions to produce said intensity ratio.
Claim 2
Dependent Claim
125 words
A nonaqueous-electrolyte secondary cell comprising a negative electrode, a positive electrode and a nonaqueous electrolyte, at least one of the negative and positive electrodes containing a binding agent and an active-material carrier or active material, wherein the binding agent is polyvinylidene fluoride; the ratio of the intensity of a first peak near a diffraction angle (2θ, where θ is a Bragg angle) of 17.7° to the intensity of a second peak near a diffraction angle of 18.5° in an X-ray diffraction pattern obtained with the CuKα radiation for the negative and/or positive electrode containing the binding agent is from 0.3 to 0.6; and said one electrode is formed by drying a slurry of said binding agent, under controlled drying conditions to produce said intensity ratio.
Claim 3
Dependent Claim
15 words
A nonaqueous-electrolyte secondary cell according to claim 1, said ratio is from 0.3 to 0.55.
Claim 4
Dependent Claim
40 words
A nonaqueous-electrolyte secondary cell according to claim 1, said negative electrode is formed of an electrode mix provided on a negative electrode collector, said electrode mix is formed of carbonaceous material as said active material carrier and the binding agent.
Claim 5
Dependent Claim
51 words
A nonaqueous electrolyte secondary cell according to claim 1, said positive electrode is formed of an electrode mix provided on a positive electrode collector, said electrode mix is formed of LiMo 2 , wherein M is at least one of Co and Ni, as said active material and the binding agent.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1996-09-20 | 1997-03-22 | 1997-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-20 | 2001-03-22 | 2001-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-20 | 2005-03-22 | 2005-09-21 | $7700.00 | Window Closed / Lapsed |