Patent application number | Description | Published |
20130122353 | SECONDARY BATTERY - An object of the invention is to provide a secondary battery having satisfactory high-temperature cycle characteristics. The present invention relates to a laminate type secondary battery including an electrode element containing an electrode pair in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolyte and a jacket housing the electrode element and the electrolyte, in which the negative electrode includes a negative-electrode active material containing at least one of a metal (a) capable of forming an alloy with lithium and a metal oxide (b) capable of absorbing and desorbing lithium ions, a negative electrode binder and a negative electrode current collector; the electrolyte contains a nonaqueous solvent and biphenyl; and the content of the biphenyl in the electrolyte is 0.5 to 2.5% by mass, based on the total of the nonaqueous solvent and the biphenyl. | 05-16-2013 |
20130157119 | SECONDARY BATTERY - An object is to provide a secondary battery in which decomposition of an electrolyte liquid is suppressed and generation of a gas is reduced, even in the case of using a laminate film as a package. Further, the present exemplary embodiment provides a secondary battery of stacked laminate type comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid and a package accommodating the electrode assembly and said electrolyte liquid, wherein the negative electrode is formed by binding a negative electrode active substance comprising a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with at least one selected from polyimides and polyamideimides, and the electrolyte liquid comprises a predetermined nitrile compound. | 06-20-2013 |
20130157120 | SECONDARY BATTERY - The object of an exemplary embodiment of the invention is to provide a secondary battery with a high performance in which the generation of the swelling can be suppressed and in which the cycle property is excellent. An exemplary embodiment of the invention is a secondary battery, comprising an electrode assembly in which a positive electrode and a negative electrode are oppositely disposed, an electrolyte liquid, and a package which encloses the electrode assembly and the electrolyte liquid inside; wherein the negative electrode is formed by binding a negative electrode active substance, which comprises metal (a) that can be alloyed with lithium, metal oxide (b) that can absorb and desorb lithium ion, and carbon material (c) that can absorb and desorb lithium ion, to a negative electrode collector with at least one selected from polyimides and a polyamide-imides; and wherein the electrolyte liquid comprises a compound represented by any one of predetermined formulae. | 06-20-2013 |
20130164603 | SECONDARY BATTERY - The object is to provide a secondary battery with higher performance, and especially to provide a secondary battery having low impedance. An exemplary embodiment of the invention is a secondary battery, comprising an electrode assembly in which a positive electrode and a negative electrode are oppositely disposed, an electrolyte liquid, and a package which encloses the electrode assembly and the electrolyte liquid inside; wherein the negative electrode is formed by binding a negative electrode active substance to a negative electrode collector with a negative electrode binder; and wherein the electrolyte liquid comprises a fluorine-containing cyclic ether compound. | 06-27-2013 |
20130164604 | SECONDARY BATTERY - An objection is to provide a high performance secondary battery having good flame retardancy and cycle properties. The present exemplary embodiment provides a secondary battery comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode is formed by binding a negative electrode active substance comprising a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with a negative electrode binder, and the electrolyte liquid comprises a supporting salt and an electrolytic solvent, the electrolytic solvent comprising at least one phosphate ester compound selected from phosphite esters, phosphonate esters and bisphosphonate esters. | 06-27-2013 |
20130164605 | SECONDARY BATTERY - An object of the present invention is to provide a secondary battery in which the decomposition of an electrolyte liquid is suppressed and the generation of a gas is reduced, even in the case of using a laminate film as a package. The present exemplary embodiment is a secondary battery of a stacked laminate type comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid, and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode is made by binding a negative electrode active substance containing a metal (a) capable of being alloyed with lithium, a metal oxide (b) capable of occluding and releasing lithium ions, and a carbon material (c) capable of occluding and releasing lithium ions, to a negative electrode current collector, with at least one selected from polyimides and polyamideimides; and the electrolyte liquid comprises acrylonitrile or an acrylonitrile compound being an acrylonitrile derivative. | 06-27-2013 |
20130183576 | SECONDARY BATTERY - An object is to provide a higher-performance secondary battery, particularly to provide a secondary battery having a low impedance. The present exemplary embodiment is a secondary battery comprising an electrode assembly in which a positive electrode and a negative electrode are arranged to face each other, an electrolyte liquid, and a package accommodating the electrode assembly and the electrolyte liquid, wherein the negative electrode includes a negative electrode active substance containing at least one selected from a metal (a) capable of being alloyed with lithium, and a metal oxide (b) capable of occluding and releasing lithium ions, a negative electrode binder, and a negative electrode current collector; and the electrolyte liquid contains a sulfide compound. | 07-18-2013 |
20130230762 | SECONDARY BATTERY AND SECONDARY BATTERY ELECTROLYTIC SOLUTION FOR USE IN SECONDARY BATTERY - A secondary battery capable of suppressing deterioration of rate characteristics and cycle characteristics even under a high-temperature environment is provided. The secondary battery according to an exemplary embodiment is a secondary battery having an electrode element in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolytic solution and an outer package packaging the electrode element and the electrolytic solution, in which the negative electrode is formed by binding a negative electrode active material to a negative electrode collector, with a negative electrode binder; and the electrolytic solution contains an organic sulfurane compound. The secondary battery electrolytic solution according to the exemplary embodiment contains an organic sulfurane compound. | 09-05-2013 |
20130260218 | SECONDARY BATTERY AND ELECTROLYTE SOLUTION FOR SECONDARY BATTERY TO BE USED IN SAME - Provided is a secondary battery having a good battery property at a high temperature. A secondary battery according to an exemplary embodiment of the invention comprises a negative electrode and an electrolyte liquid; wherein the negative electrode is formed by binding a negative electrode active substance on a negative electrode collector with a negative electrode binder; and wherein the electrolyte liquid comprises a compound (A) having a C═S bond. In this embodiment, the negative electrode active substance is formed by covering at least one of a metal (a) that can be alloyed with lithium and a metal oxide (b) that can absorb and desorb a lithium ion with a carbon material (c). Alternatively, the negative electrode active substance comprises a metal (a) that can be alloyed with lithium and the negative electrode binder negative electrode is a polyimide or a polyamide-imide. | 10-03-2013 |
20130266846 | SECONDARY BATTERY - A secondary battery having high capacity and satisfactory high-temperature cycle characteristics is provided. A secondary battery according to the exemplary embodiment has an electrode element in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolytic solution and an outer package packaging the electrode element and the electrolytic solution, wherein the negative electrode is formed by binding a negative electrode active material containing at least one of a metal (a) capable of forming an alloy with lithium and a metal oxide (b) capable of absorbing and releasing lithium ions, to a negative electrode collector, with a polyimide or a polyamide-imide serving as a negative electrode binder; and the electrolytic solution contains a phosphazene compound. | 10-10-2013 |
20130266875 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME - An exemplary embodiment of the present invention is a secondary battery which comprises a negative electrode and a battery electrolyte liquid comprising a supporting salt and a non-aqueous electrolyte solvent; wherein the negative electrode is obtained by pre-forming a SEI coating film on a negative electrode structure which is formed by binding a negative electrode active substance comprising a metal (a). that can be alloyed with lithium, a metal oxide (b) that can absorb and desorb lithium ion and a carbon material (c) that can absorb and desorb lithium ion, to a negative electrode current collector with a negative electrode binder, and wherein the non-aqueous electrolyte solvent contains at least an ionic liquid. | 10-10-2013 |
20140017559 | SECONDARY BATTERY AND ELECTROLYTE LIQUID - The object is to provide a secondary battery which has an excellent cycle property even in high-temperature environment and which has small resistance increase even when it is used in high-temperature environment. An exemplary embodiment of the invention is a secondary battery, comprising: a positive electrode, a negative electrode, and an electrolyte liquid; wherein the electrolyte liquid comprises a chain-type fluorinated sulfone compound represented by a predetermined formula. | 01-16-2014 |
20140017572 | SECONDARY BATTERY AND ELECTROLYTE LIQUID - The object is to provide a lithium ion secondary battery which has an excellent cycle property even in high-temperature environment and which has small volume increase. An exemplary embodiment of the invention is a lithium ion secondary battery, comprising: a positive electrode, a negative electrode comprising a negative electrode active material, and an electrolyte liquid; wherein the electrolyte liquid comprises a chain-type fluorinated ester compound represented by a predetermined formula and a chain-type fluorinated ether compound represented by a predetermined formula; wherein the negative electrode active material comprises metal (a) that can be alloyed with lithium, metal oxide (b) that can absorb and desorb lithium ion, and carbon material (c) that can absorb and desorb lithium ion; and wherein metal (a) is silicon, and metal oxide (b) is silicon oxide. | 01-16-2014 |