Entries |
Document | Title | Date |
20090176162 | LITHIUM RECHARGEABLE ELECTROCHEMICAL CELL - This invention concerns a lithium rechargeable electrochemical cell containing electrochemical redox active compounds in the electrolyte. The cell is composed of two compartments, where the cathodic compartment comprises a cathodic lithium insertion material and one or more of p-type redox active compound(s) in the electrolyte; the anodic compartment comprises an anodic lithium insertion material and one or more of n-type redox active compound(s) in the electrolyte. These two compartments are separated by a separator and the redox active compounds are confined only in each compartment. Such a rechargeable electrochemical cell is suitable for high energy density applications. The present invention also concerns the general use of redox active compounds and electrochemically addressable electrode systems containing similar components which are suitable for use in the electrochemical cell. | 07-09-2009 |
20090233180 | SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics and the storage characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode contains an anode active material containing a material that is capable of inserting and extracting an electrode reactant and has at least one of metal elements and metalloid elements. Further, the electrolytic solution contains a solvent containing a sulfone compound having a structure in which —S(═O) | 09-17-2009 |
20110033756 | LITHIUM ION SECONDARY BATTERY - The present invention intends to improve the intermittent cycle characteristics in a lithium ion secondary battery including, as a positive electrode active material, a lithium composite oxide mainly composed of nickel or cobalt. The present invention is a lithium ion secondary battery wherein the positive electrode includes active material particles including a lithium composite oxide. The lithium composite oxide is represented by the general formula (1): Li | 02-10-2011 |
20110053003 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING LITHIUM ION SECONDARY BATTERY - The invention relates to a lithium ion secondary battery including: a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a non-aqueous solvent including a sulfone compound, the positive electrode includes a positive electrode current collector and a positive electrode active material layer formed on the surface of the positive electrode current collector, the positive electrode active material layer includes lithium-containing composite oxide particles and a fluorocarbon resin, and a coverage of the fluorocarbon resin relative to the surface area of the lithium-containing composite oxide particles is 20 to 65%. It is an object of the invention to provide a lithium ion secondary battery that is kept from deteriorating in rate characteristics over time, in particular, from significantly deteriorating in rate characteristics during storage at high temperatures. | 03-03-2011 |
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 |
20110256457 | NONAQUEOUS SECONDARY BATTERY AND FLAME RETARDANT FOR THE SAME - A nonaqueous secondary battery, comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, the nonaqueous electrolyte solution containing as a flame retardant a compound of the general formula (I): | 10-20-2011 |
20110262816 | POLYHYDROGEN FLUORIDE BASED BATTERY - The described invention relates to primary and secondary electrochemical energy storage systems, particularly to such systems as battery cells, which use materials that take up and release ions as a means of storing and supplying electrical energy, and methods of fabrication thereof. | 10-27-2011 |
20110311884 | PENTACYCLIC ANION SALT AND USE THEREOF AS AN ELECTROLYTE - The invention relates to a pentacyclic anion salt and to the use thereof in electrolyte compositions. The compound comprises an inorganic, organic or organometallic cation M of valency m (1≦m≦3) and m anions corresponding to the formula (I) in which R | 12-22-2011 |
20120009485 | ELECTROLYTES IN SUPPORT OF 5V LI ION CHEMISTRY - This invention described the preparation of a series of compounds that can be used as co-solvents, solutes or additives in non-aqueous electrolytes and their test results in various electrochemical devices. The inclusion of these novel compounds in electrolyte systems can enable rechargeable chemistries at high voltages that are otherwise impossible with state-of-the-art electrolyte technologies. These compounds are so chosen because of their beneficial effect on the interphasial chemistries formed at high potentials, such as 5.0 V class cathodes for new Li ion chemistries. The potential application of these compounds goes beyond Li ion battery technology and covers any electrochemical device that employs non-aqueous electrolytes for the benefit of high energy density resultant from high operating voltages. | 01-12-2012 |
20120009486 | ELECTROLYTE AND SECONDARY BATTERY - A secondary battery capable of improving cycle characteristics is provided. The secondary battery includes a cathode | 01-12-2012 |
20120058401 | ELECTROLYTIC SOLUTION FOR SECONDARY BATTERY, SECONDARY BATTERY, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains chlorine ions together with a nonaqueous solvent and an electrolyte salt. The nonaqueous solvent contains sulfonic acid anhydrides (disulfonic acid anhydride or sulfonic acid carboxylic acid anhydride). A content of the chlorine ions is 5000 wt ppm or less. | 03-08-2012 |
20120094192 | COMPOSITE NANOWIRE COMPOSITIONS AND METHODS OF SYNTHESIS - Nanowire array compositions in which nanowires containing at least one Group IV metal (e.g., Si or Ge) in a single layer or core-shell nanowire structure, wherein, in particular embodiments, the nanowires have a transition metal core and/or are surrounded by or embedded within a metal oxide or metal oxide-ionic liquid ordered host material. The nanowire compositions are incorporated into the anodes of lithium ion batteries. Methods of preparing the nanowire compositions, particularly by low temperature methods, are also described. | 04-19-2012 |
20120135316 | NEW IMIDAZOLIUM SALTS HAVING LIQUID CRYSTAL CHARACTERISTICS, USEFUL AS ELECTROLYTES - Novel imidazolium salts of formula (I) are described in which R is a C | 05-31-2012 |
20120196192 | ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - In one aspect, a rechargeable lithium battery including an electrolyte for the rechargeable lithium battery is provided. The electrolyte for the rechargeable lithium battery includes: a non-aqueous organic solvent; a lithium salt; and a compound represented by Chemical Formula 1. | 08-02-2012 |
20120237836 | ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - An electrolyte for a rechargeable lithium battery includes a first lithium salt; a second lithium salt including a compound represented by Chemical Formula 1, Chemical Formula 3-1 or 3-2, or combinations thereof; a non-aqueous organic solvent; and an additive including a compound represented by Chemical Formula 9. | 09-20-2012 |
20120282530 | BATTERY STRUCTURES, SELF-ORGANIZING STRUCTURES, AND RELATED METHODS - An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector. | 11-08-2012 |
20120328960 | NONAQUEOUS SOLVENT AND POWER STORAGE DEVICE - A nonaqueous solvent having excellent reduction resistance, which can be applied to an electrolyte solution, is provided. Further, a nonaqueous solvent which can be used in a wide temperature range and applied to an electrolyte solution is provided. Furthermore, a high-performance power storage device is provided. A nonaqueous solvent containing at least an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, and a freezing-point depressant is provided. A power storage device including the nonaqueous solvent for an electrolyte solution is also provided. | 12-27-2012 |
20130004861 | ELECTROLYTE ADDITIVE FOR LITHIUM SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A non-aqueous electrolyte additive for a lithium secondary battery, a non-aqueous electrolyte, and a lithium secondary battery including the same, the additive including dicyanoacetylene or a cyano group-containing unsaturated compound represented by the following Chemical Formula 1, the cyano group-containing unsaturated compound including an unsaturated bond and two or more cyano groups linked in cis- or trans-positions of carbons of the unsaturated bond. | 01-03-2013 |
20130011747 | LITHIUM ION SECONDARY BATTERY - There is provided a lithium ion secondary battery excellent in cycle characteristics in which the conductivity of an electrode using a graphite material which is less deformed and oriented by pressurization is improved. A negative electrode mixture which includes at least a negative electrode active material comprising graphite as a main component, a binder, and a conductive aid has a ratio of a peak intensity of a (002) plane to a peak intensity of a (110) plane in an X-ray diffraction spectrum of 30 or more and 70 or less, the spectrum being measured after the negative electrode mixture is pressed at 98 MPa (1000 kgf/cm | 01-10-2013 |
20130040209 | NONAQUEOUS ELECTROLYTE SOLUTION CONTAINING CYCLIC SULFONE COMPOUND, AND LITHIUM SECONDARY BATTERY - A non-aqueous electrolyte solution containing a cyclic sulfone compound having a 1,3-dithietane-1,1,3,3-tetraoxide structure is provided. The cyclic sultone compound is preferably a compound represented by formula (I) [wherein in formula (I), R | 02-14-2013 |
20130089793 | IONIC LIQUIDS, ELECTROLYTE SOLUTIONS INCLUDING THE IONIC LIQUIDS, AND ENERGY STORAGE DEVICES INCLUDING THE IONIC LIQUIDS - An ionic liquid including a phosphazene compound that has a plurality of phosphorus-nitrogen units and at least one pendant group bonded to each phosphorus atom of the plurality of phosphorus-nitrogen units. One pendant group of the at least one pendant group comprises a positively charged pendant group. Additional embodiments of ionic liquids are disclosed, as are electrolyte solutions and energy storage devices including the embodiments of the ionic liquid. | 04-11-2013 |
20130302702 | SEPARATOR FOR ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE - The object of an exemplary embodiment of the invention is to provide a separator for an electric storage device which has small heat shrinkage in a high-temperature environment, and in which the increase of the battery temperature can be suppressed. An exemplary embodiment of the invention is a separator for an electric storage device, which comprises a cellulose derivative represented by a prescribed formula. The separator for an electric storage device can be obtained, for example, by treating a cellulose separator containing cellulose with a halogen-containing carboxylic acid or a halogen-containing alcohol. | 11-14-2013 |
20140011099 | ELECTROLYTE SOLVENT FOR CATHODE ACTIVE MATERIAL COMPOSED OF LITHIUM OXO ACID SALT, ELECTROLYTE SOLUTION FOR CATHODE ACTIVE MATERIAL COMPOSED OF LITHIUM OXO ACID SALT, AND LITHIUM ION SECONDARY BATTERY - An electrolyte solvent for a cathode active material composed of lithium oxo acid salt. The solvent is used for a lithium ion secondary battery using the lithium oxo acid salt as a cathode material. The electrolyte solvent includes an ammonium ion which includes two or more alkoxyalkyl groups. | 01-09-2014 |
20140050991 | ELECTROLYTE FOR HIGH VOLTAGE LITHIUM RECHARGEABLE BATTERY AND LITHIUM RECHARGEABLE BATTERY COMPRISING THE SAME - In an aspect, an electrolyte for a lithium rechargeable battery and a lithium rechargeable battery are provided. The electrolyte may include a non-aqueous organic solvent, a lithium salt, and an aromatic amine as an additive. | 02-20-2014 |
20140099558 | POWER STORAGE DEVICE - A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I | 04-10-2014 |
20140120428 | LITHIUM-SULPHUR BATTERY WITH HIGH SPECIFIC ENERGY - The invention provides for a method of discharging a chemical source of electric energy in two stages. The chemical source of electric energy comprises a positive electrode (cathode) including sulphur or sulphur-based organic compounds, sulphur-based polymeric compounds or sulphur-based inorganic compounds as a depolarizer, a negative electrode (anode) made of metallic lithium or lithium-containing alloys, and an electrolyte comprising a solution of at least one salt in at least one aprotic solvent. The method comprises the steps of configuring the chemical source of electric energy to generate soluble polysulphides in the electrolyte during a first stage of a two stage discharge process, and selecting the quantity of sulphur in the depolariser and the volume of electrolyte in a way that after the first stage discharge of the cathode, the concentration of the soluble polysulphides in the electrolyte is at least seventy percent (70%) of a saturation concentration of the polysulphides in the electrolyte. | 05-01-2014 |
20140242473 | ELECTROLYTE SOLUTION FOR MAGNESIUM BATTERY AND MAGNESIUM BATTERY CONTAINING THIS ELECTROLYTE SOLUTION - Provided is an electrolyte solution for a magnesium battery, containing a mesoionic compound represented by the following general formula (1): | 08-28-2014 |
20140335426 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. A positive electrode charge potential is 3.7 V or less with respect to a lithium metal potential. The nonaqueous electrolyte includes a cyclic disulfone compound having a specific structure in an amount of 0.1 to 4.0% by mass based on a total mass of the nonaqueous electrolyte. | 11-13-2014 |
20140342245 | POWER STORAGE DEVICE, LITHIUM-ION SECONDARY BATTERY, ELECTRIC DOUBLE LAYER CAPACITOR AND LITHIUM-ION CAPACITOR - One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R | 11-20-2014 |
20150072248 | ALKALI METAL-SULFUR-BASED SECONDARY BATTERY - An alkali metal-sulfur-based secondary battery, in which coulombic efficiency is improved by suppressing a side reaction during charge, and a reduction in discharge capacity by repetition of charge and discharge is suppressed and which has a long battery life and an improved input/output density, includes a positive electrode or a negative electrode containing a sulfur-based electrode active material; an electrolyte solution containing an ether compound such as THF and glyme and a solvent such as a fluorine-based solvent, wherein at least a part of the ether compound and the alkali metal salt forms a complex; and a counter electrode. | 03-12-2015 |
20150132665 | IONIC LIQUID AND POWER STORAGE DEVICE INCLUDING THE SAME - An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. | 05-14-2015 |
20150140449 | COMPOUND, NONAQUEOUS ELECTROLYTE, AND POWER STORAGE DEVICE - Provided are a nonaqueous solvent containing a compound with high conductivity and low viscosity and a high-performance power storage device using the nonaqueous solvent. The power storage device includes an ionic liquid. The ionic liquid contains an anion and a cation having a five-membered heteroaromatic ring having one or more substituents. At least one of the substituents is a straight chain formed of four or more atoms and includes one or more of C, O, Si, N, S, and P. | 05-21-2015 |
20150295277 | LITHIUM SECONDARY BATTERY - A lithium ion secondary battery which is a non-aqueous electrolyte secondary battery comprising a positive electrode comprising a positive electrode active material capable of absorbing and releasing lithium, and an electrolyte solution comprising a non-aqueous electrolyte solvent, wherein the positive electrode comprises a sulfate group, and the non-aqueous electrolyte solvent comprises a sulfone compound represented by a specified formula. | 10-15-2015 |
20150333364 | Cylindrical single-piece lithium-ion battery of 400Ah and its preparation method - A cylindrical single-piece lithium-ion battery of 400 Ah includes: a cylindrical battery enclosure ( | 11-19-2015 |
20150380771 | METHOD FOR SYNTHESIZING IONIC LIQUIDS HAVING A CARBONATE FUNCTIONAL GROUP AND IONIC LIQUIDS THUS OBTAINED - The present invention relates to a method for synthesizing ionic liquids comprising a carbonate functional group characterized in that it comprises a step of reaction A without addition of lithium between a first reactant selected among an imidazolium, a pyrrolidinium or an ammonium and a second reactant being a methyl formate imidazolium. The first reactant is an imidazolium alcohol, a pyrrolidinium alcohol or an ammonium alcohol salt, the anion of which is NTf2. The second reactant is a chloromethyl formate imidazolium. | 12-31-2015 |
20160028123 | NONAQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY - A nonaqueous electrolyte solution secondary battery having an electrode element having a positive electrode and a negative electrode disposed so as to face each other, a nonaqueous electrolyte solution, and an outer package housing the electrode element and the nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains a cyclic sulfonic acid ester represented by the general formula (1), and a positive electrode active material in the positive electrode is a mixture of a lithium manganese composite oxide having a spinel structure and a lithium transition metal composite compound having a layered rock salt structure. | 01-28-2016 |
20160149264 | SPECIFIC FLUORINATED COMPOUNDS USED AS AN ORGANIC SOLVENT FOR LITHIUM SALTS - The disclosure relates to fluorinated compounds of following formula (I): | 05-26-2016 |