| Patent application number | Description | Published |
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| 20090253045 | NONAQUEOUS ELECTROLYTIC SOLUTIONS AND NONAQUEOUS-ELECTROLYTE BATTERIES - Nonaqueous electrolytes capable of providing a battery having a high capacity and excellent in storability and cycle characteristics are provided. Also provided are nonaqueous-electrolyte batteries produced with the electrolytes. The nonaqueous electrolytes include ones which (1) contains a cyclic carbonate having an unsaturated bond and further contains a fluorinated cyclic carbonate having two or more fluorine atoms, (2) contains an aromatic compound having 7-18 carbon atoms in total and further contains a fluorinated cyclic carbonate having two or more fluorine atoms, (3) contains diethyl carbonate and further contains a fluorinated cyclic carbonate having two or more fluorine atoms, or (4) contains at least one compound selected from the group consisting of cyclic sulfonic acid ester compounds, di-sulfonic acid ester compounds, nitrile compounds, and compounds represented by general formula (1) and further contains a fluorinated cyclic carbonate having two or more fluorine atoms. The electrolytes further include (5) a nonaqueous electrolyte characterized by being an electrolytic solution for use in a high-voltage battery having a final charge voltage of 4.3 V or higher and containing a fluorinated cyclic carbonate having two or more fluorine atoms. | 10-08-2009 |
| 20100015514 | LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME - A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. | 01-21-2010 |
| 20100021823 | NONAQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME - The invention relates to a nonaqueous electrolyte which comprises a nonaqueous organic solvent and a lithium salt dissolved therein, wherein the nonaqueous organic solvent contains at least one compound selected from the group consisting of acid anhydrides and carbonic esters having an unsaturated bond, and at least one compound selected from the group consisting of sulfonic compounds and fluorine-containing aromatic compounds having 9 carbon atoms or less; and a lithium secondary battery employing the same. | 01-28-2010 |
| 20100035147 | NONAQUEOUS ELECTROLYTIC SOLUTION AND NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolytic solution that can provide a battery that is low in gas generation, has a large capacity, and is excellent in storage characteristics and cycle characteristics contains an electrolyte and a nonaqueous solvent dissolving the electrolyte and further contains 0.001 vol % or more and less than 1 vol % of a compound represented by Formula (1) in the nonaqueous solvent. Alternatively, the nonaqueous electrolytic solution contains 0.001 vol % or more and less than 5 vol % of a compound represented by Formula (1) in the nonaqueous solvent and further contains at least one compound selected from the group consisting of cyclic carbonate compounds having carbon-carbon unsaturated bonds, cyclic carbonate compounds having fluorine atoms, monofluorophosphates, and difluorophosphates. | 02-11-2010 |
| 20100099031 | NONAQUEOUS ELECTROLYTES AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERIES EMPLOYING THE SAME - A subject is to provide a nonaqueous electrolyte excellent in cycle performances such as capacity retention after cycling, output after cycling, discharge capacity after cycling, and cycle discharge capacity ratio, output characteristics, high-temperature storability, low-temperature discharge characteristics, heavy-current discharge characteristics, high-temperature storability, safety, high capacity, high output, high-current-density cycle performances, compatibility of these performances, etc. Another subject is to provide a nonaqueous-electrolyte secondary battery employing the nonaqueous electrolyte. The subjects have been accomplished with a nonaqueous electrolyte which contains a monofluorophosphate and/or a difluorophosphate and further contains a compound having a specific chemical structure or specific properties. | 04-22-2010 |
| 20100119956 | NONAQUEOUS ELECTROLYTE FOR SECONDARY BATTERY AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY EMPLOYING THE SAME - An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties. | 05-13-2010 |
| 20100227218 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery wherein the non-aqueous electrolyte contains a non-aqueous solvent, a solute dissolved in the non-aqueous solvent, and hydrogenated terphenyl, the solute includes a boron-containing alkali salt and a boron-free alkali salt, the negative electrode includes a negative electrode active material comprising a randomly oriented carbon composite (A), and the carbon composite (A) contains a graphitic carbon substance (B) and a carbon substance (C) that is different from the graphitic carbon substance (B). | 09-09-2010 |
| 20100227226 | NONAQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME - A nonaqueous electrolyte which contains a nonaqueous organic solvent and a lithium salt dissolved therein is provided. Also provided is a lithium secondary battery employing the nonaqueous electrolyte. | 09-09-2010 |
| 20110123871 | NONAQUEOUS ELECTROLYTIC SOLUTION AND NONAQUEOUS-ELECTROLYTE BATTERY - Disclosed is a nonaqueous electrolytic solution which enables formation of a nonaqueous-electrolyte battery having high capacity and excellent storage characteristics at high temperatures, while sufficiently enhancing safety at the time of overcharge. A nonaqueous-electrolyte battery produced by using the nonaqueous electrolytic solution is also disclosed. The nonaqueous electrolytic solution comprises an electrolyte and a nonaqueous solvent, and includes any of specific nonaqueous electrolytic solutions (A) to (D). | 05-26-2011 |
| 20110159380 | NONAQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME - A nonaqueous electrolyte which contains a nonaqueous organic solvent and a lithium salt dissolved therein is provided. Also provided is a lithium secondary battery employing the nonaqueous electrolyte. | 06-30-2011 |
