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US4717634A
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Electric cells utilizing polyaniline as a positive electrode active material
Assignee: Bridgestone Corp
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Filing: 1986-10-17
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Granted: 1988-01-05
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Expires: 2006-10-17
Abstract
Abstract An electric cell comprises a positive electrode, a negative electrode and an electrolytic solution, characterized in that a positive active material of the positive electrode is a polyaniline, a negative electrode active material of the negative electrode is lithium or a lithium alloy containing 4×10 -3 to 170×10 -3 mol of effective lithium which is capable of electrochemical occlusion and release upon charging and discharging per g of the polyaniline used as the positive electrode active material, and said electrolytic solution is an non-aqueous electrolytic solution containing an electrolyte of more than 1 mol/l to less than 6 mol/l in a non-aqueous solvent.
Inventors
- 👤 Hideharu Daifuku
- 👤 Tadashi Fuse
- 👤 Masao Ogawa
- 👤 Yoshitomo Masuda
- 👤 Shinichi Toyosawa
- 👤 Ryota Fujio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; C; C08; C08G; C08G61/00; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; H01M10/00; H01M10/36; H01M4/04; H01M4/0438; H01M4/0459; H01M4/0461; H01M4/36; H01M4/38; H01M4/40; H01M4/60; H01M4/64; H01M4/66; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M2300/0065; H01M2300/0068; H01M2300/0082; H01M4/405; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
An electric cell comprising a positive electrode, a negative electrode and an electrolytic solution, wherein said positive electrode contains as an active material a polyaniline having a water content of 1000 ppm or less, said negative electrode contains as an active material lithium or a lithium alloy containing 4×10 -3 to 170×10 -3 mol of effective lithium which is capable of electrochemical occlusion and release upon charging and discharging per g of the polyaniline used as the positive electrode active material, and said electrolytic solution being a non-aqueous electrolytic solution containing an electrolyte of more than 1 mol/l to less than 6 mol/l in a non-aqueous solvent.
Claim 2
Dependent Claim
107 words
An electric cell comprising a positive electrode, a negative electrode and an electrolytic solution, wherein said positive electrode contains as an active material a polyaniline having a water content of 1000 ppm or less, said negative electrode contains as an active material lithium or a lithium alloy containing 4×10 -3 to 170×10 -3 mol of effective lithium which is capable of electrochemical occlusion and release upon charging and discharging per g of the polyaniline used as the positive electrode active material, and said electrolytic solution being a non-aqueous electrolytic solution containing an electrolyte of more than 1 mol/l to less than 6 mol/l in a non-aqueous solvent.
Claim 3
Dependent Claim
50 words
The electric cell according to claim 1, wherein the polyaniline is formed on a stainless steel substrate in the form of a film by electrolytic polymerization, the polyaniline is integrated with the stainless steel substrate, and the substrate constitutes a positive electrode collector or a container of said electric cell.
Claim 4
Dependent Claim
53 words
The electric cell according to claim 1, wherein the polyaniline is formed on a stainless steel substrate in the form of a film by electrolytic polymerization, the polyaniline is integrated with the stainless steel substrate, and the substrate constitutes a positive electrode collector which is fixed to a container of said electric cell.
Claim 5
Dependent Claim
32 words
The electric cell according to claim 1, wherein said lithium alloy is prepared electrochemically from an electrolytic solution having a stable region at potentials of 1.2 volt v.s. Li/Li + or less.
Claim 6
Dependent Claim
20 words
The electric cell according to claim 1, wherein said negative electrode is integrated with a container of said electric cell.
Claim 7
Dependent Claim
18 words
The electric cell according to claim 1, wherein the thickness of the polyaniline is 0.5 to 2 mm.
References Cited (Backward Citations)
US4547439A
Cited
US4629540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |