Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8178246 | Nonaqueous electrolyte solution, nonaqueous electrolyte secondary cell, and carbonate compounds The present invention provides a nonaqueous electrolytic solution which can give excellent cycle characteristics. The nonaqueous electrolytic solution contains a linear carbonate represented by the formula (1): wherein, in ... | 05/15/2012 |
| 8088518 | Method for producing lithium difluorobis (oxalato) phosphate solution Disclosed is a method for producing a lithium difluorobis(oxalato)phosphate solution, which is characterized by that lithium hexafluorophosphate and oxalic acid are mixed together in a nonaqueous solvent, in a manner that the molar ratio of lithium hexafluorophospha... | 01/03/2012 |
| 7582389 | Non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes an onium compound, a lithium salt and a chain carbonate having a C═C unsaturated bond. The ... | 09/01/2009 |
| 7438991 | Nonaqueous electrolyte secondary cell and method for charging same The invention provides a non-aqueous electrolyte secondary cell that has high capacity and excels in cycle characteristics. The non-aqueous electrolyte secondary cell functions stably at a high potential of from 4.4 to 4.6 V with respect to lithium and inhibits the ... | 10/21/2008 |
| 7387852 | Polymer electrolyte and lithium battery using the same A polymer electrolyte extends the cycle life, improves the safety, and reduces the swelling of a battery, compared with a polymer electrolyte containing a poly(alkylene oxide) polymer. Also, a lithium battery utilizes the polymer electrolyte. The polymer electrolyte... | 06/17/2008 |
| 7348103 | Polyfluorinated boron cluster anions for lithium electrolytes The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement re... | 03/25/2008 |
| 7311993 | Polyfluorinated boron cluster anions for lithium electrolytes The present invention relates to an improvement in lithium secondary batteries comprised of a negative electrode, a positive electrode, a separator, and a lithium-based electrolyte carried in an aprotic solvent and to the electrolyte compositions. The improvement re... | 12/25/2007 |
| 7306705 | Method for dehydrating composition comprising lithium bis(pentafluoroethanesulfonyl)imide A method for dehydrating an aqueous composition comprising lithium bis(pentafluoroethanesulfonyl)imide and at least one organic solvent, wherein a part of solvent is distilled off by distillation. ... | 12/11/2007 |
| 7255965 | Non-aqueous electrolytic solution The use of lithium bis(oxalate)borate (LiBOB) as an additive in a lithium secondary battery provides improved battery performance such as long life and high capacity retention after high temperature storage. ... | 08/14/2007 |
| 7255966 | Electrolyte for lithium secondary battery and lithium secondary battery comprising same A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): | 08/14/2007 |
| 7241533 | Electrode for rechargeable lithium battery and rechargeable lithium battery An electrode for a rechargeable lithium battery characterized in that thin films of active material capable of lithium storage and release, i.e., microcrystalline or amorphous silicone thin films are deposited on opposite faces of a plate-form current collector.... | 07/10/2007 |
| 7235193 | Complex lithium metal oxides with enhanced cycle life and safety and a process for preparation thereof This invention relates to complex lithium metal oxides, which are cathode active materials of a lithium or lithium ion secondary battery with enhanced cycle life and safety, and a process for preparation thereof. The core particles are complex lithium metal oxides c... | 06/26/2007 |
| 7235335 | Nonaqueous liquid electrolyte and nonaqueous liquid electrolyte secondary battery Disclosed is a nonaqueous liquid electrolyte comprising a nonaqueous solvent, an electrolyte dissolved in the nonaqueous solvent and a macromolecular material added to the nonaqueous solvent. The nonaqueous liquid electrolyte is a fluid having a viscosity at 20° C.... | 06/26/2007 |
| 7160648 | Polymer electrolyte composition for improving overcharge safety and lithium battery using the same A polymer electrolyte composition for improving overcharge safety and a lithium battery using the same are provided. The polymer electrolyte composition includes acrylate, epoxy or isocyanate at both of its terminals, and includes a compound containing an aromatic g... | 01/09/2007 |
| 7157188 | Battery A battery wherein a cathode and an anode are layered and wound with a separator and an electrolyte in between them. The electrolyte is formed by firstly forming a coating layer containing a high molecular weight compound, a high viscosity solvent having a boiling po... | 01/02/2007 |
| 7083878 | Nonaqueous electrolytic solution and lithium secondary battery An object of the invention is to provide such a battery that has a high capacity, is excellent in storage characteristics, cycle characteristics and continuous charging characteristics, and is small in gas generation amount, whereby size reduction and improvement in... | 08/01/2006 |
| 7049032 | Secondary power source A secondary power source comprising a positive electrode made mainly of activated carbon, a negative electrode made mainly of a carbon material capable of doping and undoping lithium ions and an organic electrolyte containing a solute of a lithium salt, wherein the ... | 05/23/2006 |
| 7008728 | Non-aqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same An electrolyte for a lithium secondary battery is provided. The electrolyte includes a lithium salt, a non-aqueous organic solvent, and a compound represented by Formula (1): wherein R1, R2, and R | 03/07/2006 |
| 6942949 | Rechargeable lithium electrochemical cell A secondary battery is comprised of a positive electrode, a negative electrode formed from a lithium storage material, and a non-aqueous electrolyte. The non-aqueous electrolyte includes a lithium salt, non-aqueous aprotic solvent(s), such as ethylen carbonate, prop... | 09/13/2005 |
| 6921612 | Nonaqueous electrolyte composition for improving overcharge safety and lithium battery using the same Provided are a nonaqueous electrolyte for improving overcharge safety and a lithium battery using the same. The nonaqueous electrolyte according to the present invention forms a polymer due to its oxidative decomposition even if there is an increase in voltage due t... | 07/26/2005 |
| 6919141 | Phosphate additives for nonaqueous electrolyte rechargeable electrochemical cells A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one phosphate additive having the formula... | 07/19/2005 |
| 6908708 | Method of preparing layered lithium-chromium-manganese oxides for lithium batteries A method of preparing layered lithium-chromium-manganese oxides having the formula Li[CrxLi(1/3−x/3) Mn(2/3−2x/3)]O2 where 0.1≦X≦0.5 for lithium batteries. Homogeneous precipitation is prepared by adding lithium hy... | 06/21/2005 |
| 6893778 | Lithium polymer cell In a lithium polymer battery of the present invention, a positive electrode, an negative electrode and a separator respectively contain a vinylidene fluoride-hexafluoropropylene copolymer, an electrolyte contains a solvent comprising diethyl carbonate and a solute d... | 05/17/2005 |
| 6878492 | Polymerizable composition and use thereof The present invention provides a solid polymer electrolyte; a polymerizable composition having low viscosity and excellent processability for obtaining the solid polymer electrolyte; and a polymerizable compound having low viscosity, and good polymerizability and st... | 04/12/2005 |
| 6866965 | Polymeric electrolyte and lithium battery employing the same A polymeric electrolyte and a lithium battery lithium employing the same. The polymeric electrolyte includes a cross-linked polyether urethane prepared by reacting a pre-polymer having a polyethylene oxide backbone and terminated with NCO, with a cross-linking agent... | 03/15/2005 |
| 6852446 | Non-aqueous electrolytes for lithium electrochemical cells A non-aqueous electric current producing electrochemical cell is provided comprising an anode and a cathode, an ionically permeable separator interposed between the anode and the cathode, and a non-aqueous electrolyte, the electrolyte comprising an ionically conduct... | 02/08/2005 |
| 6852138 | Method of making polymer electrolyte electrochemical cells The invention relates to a method for the preparation of a polymer electrolyte electrochemical cell using an electrolyte precursor, said precursor comprising one or more solvents, one or more salts and a polymer which dissolves in the solvent at a first temperature ... | 02/08/2005 |
| 6841300 | Electrolyte for a nonaqueous battery An electrolyte containing calcium bistrifluoromethanesulfonimide [Ca((CF3SO2)2N)2] for a nonaqueous battery. The calcium bistrifluoromethanesulfonimide is soluble in an organic solvent and a molten salt having a melting po... | 01/11/2005 |
| 6824928 | Organic borate compounds and the nonaqueous electrolytes and lithium secondary batteries using the compounds The object of the present invention is to supply organic borates highly soluble even in a solvent of a low dielectric constant; nonaqueous electrolytes made from these organic borates and excellent in characteristics; lithium secondary batteries with improved high-t... | 11/30/2004 |
| 6803152 | Nonaqueous electrolytes based on organosilicon ammonium derivatives for high-energy power sources A nonaqueous electrolyte additive includes an organosilicon backbone including at least one ethylene oxide (CH2CH2O) unit, at least two pyridinium groups bound to the backbone, the pyridinium groups each bound to at least one halogen ion or hal... | 10/12/2004 |
| 6780545 | Method for manufacturing galvanic elements having a liquid organic electrolyte A method for manufacturing galvanic elements having a liquid organic electrolyte that contain an electrode-separator assembly that has at least one lithium intercalating electrode in whose polymer matrix insoluble, electrochemically active materials are finely distr... | 08/24/2004 |
| 6743549 | Nonaqueous electrolyte lithium secondary batteries This invention relates to electrolyte solution compositions useful in lithium-ion batteries. These electrolytes feature lower volatility than solutions known in the art while retaining excellent battery performance using graphite based negative electrode active mate... | 06/01/2004 |
| 6680149 | Solid polymer electrolytes using polyether poly (N-substituted urethane) The present invention relates to a solid polymer electrolyte of polyether poly(N-substituted urethane) comprising an electrolytic compound and a polymer matrix, wherein the polymer matrix is a copolymer comprising polyether unit and polyurethane unit and ... | 01/20/2004 |
| 6632571 | Polymeric gel electrolyte and lithium battery employing the same Provided are a polymeric gel electrolyte comprising a lithium salt, an organic solvent and a thermal curing product of a composition having a terpolymer having a repeating unit represented by formula (1), a repeating unit represented by formula (2) and a ... | 10/14/2003 |
| 6627351 | Non-aqueous electrolyte battery A non-aqueous electrolyte battery free from considerable change in the structure of a positive electrode active material thereof to enlarge the capacity thereof, incorporating a positive electrode containing a positive-electrode active material; a negativ... | 09/30/2003 |
| 6589689 | Non-aqueous electrolyte secondary battery and method for producing the same For providing a non-aqueous electrolyte secondary battery having excellent storage characteristics when stored in the charged state under a high temperature condition, the non-aqueous electrolyte or the negative electrode is made to contain divinylethylen... | 07/08/2003 |
| 6576373 | Non-aqueous electrochemical apparatus and electrolyte thereof A salicyl derivative or a salicylidene derivative such as salicyl alcohol or salicylaldehyde is added to a non-aqueous electrolyte to prevent evolution of gas caused by decomposition of the solvent.... | 06/10/2003 |
| 6558850 | Method of fabricating an electrolytic cell employing a solid polymer electrolyte A solid polymer electrolyte for an electrolytic cell is prepared by a sol-gel process in which an active metal ion conducting liquid electrolyte, e.g. a lithium-ion electrolyte, containing a salt which is stable in the presence of water, e.g. lithium ... | 05/06/2003 |
| 6534220 | High-boiling electrolyte solvent Novel carbonate compounds and novel carbamate compounds comprise at least one carbonate or carbamate moiety that is directly bonded only to groups selected from the group consisting of alkyl groups, cycloalkyl groups, alkenyl groups, cycloalkenyl groups, ... | 03/18/2003 |
| 6511769 | Electrolyte for rechargeable lithium battery An electrolyte for rechargeable lithium battery including a lithium salt, an organic solvent and a thermosetting organic compound is provided.... | 01/28/2003 |
