Abstract: A polymer electrolyte for a lithium secondary battery that may include: a fluorine-based solvent; a lithium salt; and a flame retardant polymer containing phosphorus and fluorine, wherein the polymer electrolyte has a fluorine content of 35 to 60% by weight and a phosphorus content of 2.3 to 7.5% by weight. Lithium secondary batteries containing the polymer electrolyte exhibit improved flame retardancy and ionic conductivity as well as enhanced high-voltage stability.

Abstract: The invention discloses an active material ball composite layer. The active material ball composite layer includes a plurality of active material balls and an outer binder. The active material ball include a plurality of active material particles and a first conductive material. An inner binder is used to adhere the active material particles and the first conductive material to form the active material balls. Then, the outer binder is used to adhere the active material balls to form the composite layer. The elasticity of the inner binder is smaller than the elasticity of the outer binder. Therefore, the scale of expansion of the active material particles is efficiently controlled during charging and discharging. The unrecoverable voids would be reduced or avoided.

Abstract: The present disclosure specifically relates to a method for preparing an electro-conductive polymer binding agent and an application, the method including the following steps: (1) dissolving 1,3,5,7-tetrakis(4-aminophenyl)adamantane and polyacrylic acid (PAA) in deionized water to form a solution A; (2) dissolving ammonium persulfate (APS) in deionized water to form a solution B; (3) mixing the solution A with the solution B to complete polymerization and cross-linking reactions, and performing vacuum filtration and washing to obtain a hydrogel; and (4) drying the hydrogel obtained in step (3) under vacuum conditions to obtain an electro-conductive polymer binding agent. Lithium-ion batteries obtained in the present disclosure feature high capacity, high cycle stability, and long service life.

Abstract: An electrolyte including at least a compound of formula I: A1, A2, and A3 are each independently selected from the following formulas I-A, I-B, I-C, or I-D, and the A1, A2, and A3 are not all I-A: m and k are 0 or 1, and n is integer from 1 to 6. R11, R13, R14, R15, R16, R17, R18, R19, R1a, R1b, R1c, and R1d are selected from hydrogen; substituted or unsubstituted C1-C10 alkylidene groups, C2-C10 alkenylene groups, C2-C10 alkynylidene groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, or C3-C10 alicyclic hydrocarbon groups. R12 is selected from substituted or unsubstituted C1-C10 alkyl groups, C2-C10 alkenyl groups, C2-C10 alkynyl groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, C3-C10 alicyclic hydrocarbon groups, or heteroatom-containing functional groups.

Abstract: A compound according to an embodiment of the present disclosure is represented by Formula 1. An electrolyte for a lithium secondary battery according to an embodiment of the present disclosure may include the compound, and a lithium secondary battery according to an embodiment of the present disclosure may include the electrolyte.

Abstract: A silicon mixture can include active material, one or more additive, and optionally solvent. A method for making a silicon mixture can include reducing a silica precursor, fusing silicon particles, mixing constituents of a silicon mixture, and casting a film using the silicon mixture.

Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery and a lithium secondary battery comprising same, the electrolyte comprising: a non-aqueous organic solvent; a lithium salt; and an additive, wherein the additive includes a compound represented by Chemical Formula 1 and a negative electrode film forming agent. Formula 1 is as described in the specification. For example, the electrolyte for a lithium secondary battery includes a non-aqueous organic solvent, a lithium salt, and an additive, and the additive includes a compound represented by Chemical Formula 1 and a negative electrode film forming agent. Description of Chemical Formula 1 is as described in the specification.

Abstract: An electrode for a rechargeable lithium battery, the electrode comprising an electrode active material layer comprising an electrode active material that is in physical contact with or mixed with a quasi-solid or solid-state electrolyte, wherein the electrolyte comprises a polymer, which is a polymerization or crosslinking product of a reactive additive (reactive liquid electrolyte) comprising (i) a first liquid solvent that is polymerizable, (ii) an initiator and/or curing agent, (iii) a lithium salt, and (iv) an optional second liquid solvent; wherein the first liquid solvent occupies from 1% to 99% by weight and the second solvent, if present, occupies from 0.1% to 99% by weight based on the total weight of the reactive additive; wherein the first liquid solvent has a lower flash point, a higher vapor pressure, a higher dielectric constant, or a higher solubility of the lithium salt as compared with the second liquid solvent.

Abstract: Electrode or electrolyte additives for energy storage devices comprising symmetrical or asymmetrical alkylsulfonyl imide or cyclic alkylene sulfonylimide salts are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Symmetrical or asymmetrical alkylsulfonyl imide or cyclic alkylene sulfonylimide salts may serve as additives to the electrodes or to the electrolyte composition, or both.

Abstract: A solar cell of an embodiment includes: a transparent substrate; a p-electrode on the substrate, the p-electrode including a first p-electrode containing an Sn-based metal oxide, a second p-electrode having an opening and consisting of a wiring containing a metal or graphene, and a third p-electrode containing an In-based metal oxide; a p-type light absorbing layer in direct contact with a surface of the first p-electrode on a side opposite to the second p-electrode side; an n-type layer provided on the p-type light absorbing layer; and an n-electrode provided on the n-type layer. The third p-electrode is provided to be present between the first p-electrode and the second p-electrode and to be in direct contact with an upper surface of the second p-electrode. An entire side surface of the second p-electrode is in direct contact with the first p-electrode.

Abstract: A bipolar electrode for a lithium battery, the bipolar electrode comprising: (a) a current collector comprising a conductive material foil having two opposing primary surfaces, wherein one or both of the primary surfaces is optionally coated with a layer of graphene or expanded graphite material; and (b) a negative electrode layer and a positive electrode layer respectively deposited on the two primary surfaces, wherein the positive electrode layer comprises a mixture of particles of a cathode active material and a quasi-solid or solid-state electrolyte and the electrolyte comprises a nitrile and a polymer, which is a polymerization or crosslinking product of a reactive additive comprising (i) a first liquid solvent that is polymerizable, (ii) an initiator or a curing agent, and (iii) a lithium salt. Also provided is a bipolar battery that comprises a plurality of bipolar electrodes connected in series.

Abstract: The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and ? current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and ? current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.

Abstract: The present disclosure provides a nonaqueous electrolyte solution which contains: a nonaqueous solvent containing acetonitrile and vinylene carbonate; and a compound represented by general formula (1) R1-A-R2 (wherein A represents a divalent group that has a structure represented by one of formulae (1-2) to (1-5); and each of R1 and R2 independently represents an aryl group, an alkyl group which may be substituted by a halogen atom, while having from 1 to 4 carbon atoms, an alkyl group, a vinylidene group which may be substituted by a halogen atom, or an aryl group which may be substituted by a halogen atom; or alternatively, R1 and R2 may combine with each other and form, together with A, a ring structure that may have an unsaturated bond).

Abstract: The present disclosure is to suppress the scratching of or damage to an exterior body or current collectors caused by displacement of terminals connected to electrode bodies when a battery expands or contracts. The displacement of terminals when a battery expands or contracts is prevented by arranging the protruding positions of the terminals side by side with at least one of a positive electrode terminal and a negative electrode terminal formed in a crank-like shape, and supporting the positive electrode terminal and the negative electrode terminal by a holder.

Abstract: The present disclosure relates to a composition for a polymer electrolyte, a polymer electrolyte comprising the same, and a method for producing the polymer electrolyte, and specifically, to a composition for a polymer electrolyte comprising an ion conductive monomer and a polymerizable comonomer, and a polymer electrolyte comprising the same.

Abstract: A secondary battery and a preparation method thereof, and a battery module, battery pack, and apparatus containing a secondary battery are provided. In some embodiments, the secondary battery includes a positive electrode plate, a negative electrode plate, and an electrolyte, where the positive electrode plate includes a positive electrode current collector and a positive electrode film layer that is disposed on at least one surface of the positive electrode current collector and that includes a positive electrode active material, and the negative electrode plate includes a negative electrode current collector and a negative electrode film layer that is disposed on at least one surface of the negative electrode current collector and that includes a negative electrode active material; and the positive electrode active material includes a first material and a second material.

Abstract: The present invention describes a silicon-carbon composite anode tor lithium-ion batteries comprising 40-80 weight % of silicon particles, 10-45 weight % of carbon, consisting of carbon black and graphite, and a combination of carboxymethyl cellulose (CMC) and styrene butadiene rubber (SB.R) as a binder. The invention also comprises a method of manufacturing the anode and a Li-ion battery comprising the Si—C composite anode according to the present invention.

Abstract: The application relates to the field of lithium ion battery technology and, more particularly, relates to a lithium-supplement layer and its negative electrode sheet, a lithium ion battery and a device. The lithium-supplement layer is formed by connecting a transition layer, an oxide layer and a surface layer in sequence, the surface layer contains an appropriate amount of an organic material and a filling substance, which can reduce a winding temperature of the negative electrode sheet, the oxide layer substance in the lithium-supplement layer is used to provide an additional lithium source, after injection, the lithium source can be continuously supplemented during the cycle process to improve the activity of a lithium layer, at the same time, the filling substance contained in the surface layer can effectively play a role of restraining the expansion of an active substance, and improve the battery cycle performance.

Abstract: Provided is a lithium secondary battery including an anode including a silicon-based anode active material; a cathode; and an electrolyte, the electrolyte including a lithium salt, a non-aqueous organic solvent, and a conjugated diene compound.

Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.

Abstract: Hybrid electrodes for batteries are disclosed having a protective electrochemically active layer on a metal layer. Other hybrid electrodes include a silicon salt on a metal electrode. The protective layer can be formed directly from the reaction between the metal electrode and a metal salt in a pre-treatment solution and/or from a reaction of the metal salt added in an electrolyte so that the protective layer can be formed in situ during battery formation cycles.

Abstract: An electrolyte and a lithium secondary battery including the same. The electrolyte includes a lithium salt; an organic solvent; and at least one siloxane compound represented by Formula 1 or Formula 2, wherein an amount of the at least one siloxane compound is about 0.05 wt % to about 20 wt % based on a total weight of the electrolyte. In Formulae 1 and 2, group substituents and number indices are as defined in the specification.

Abstract: Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

Abstract: The present embodiment provides a lithium ion secondary battery including a positive electrode containing LiaNixCoyMzO2 (0.9?a?1.2, 0.3?x?0.8, 0.2?y+z?0.7, where M is a metal element other than Li, Ni, and Co) as a positive active material, and a negative electrode containing non-graphitic carbon as a negative active material. In this lithium ion secondary battery, at a portion where the positive electrode and the negative electrode face each other, a basis weight (P) of the positive active material and a basis weight (N) of the negative active material satisfy a relational expression of 0.65?P/N?1.05.

Abstract: Provided is a lithium secondary battery including an anode including a silicon-based anode active material; a cathode; and an electrolyte, the electrolyte including a lithium salt, a non-aqueous organic solvent, and a conjugated diene compound.

Abstract: The present application discloses a lithium ion secondary battery comprising a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film provided on at least one surface of the positive electrode current collector, and the positive electrode film comprises a first positive electrode active material represented by chemical formula Li1+xNiaCobMe1-a-bO2-yAy and a second positive electrode active material represented by chemical formula Li1+zMncN2-cO4-dBd; the positive electrode plate has a resistivity r of 3500 ?·m or less; and the electrolyte comprises a fluorine-containing lithium salt type additive. The lithium ion secondary battery provided by the present application is capable of satisfying high safety performance, high-temperature storage performance and cycle performance simultaneously.

Abstract: Provided are separators for use in an electrochemical cell comprising (a) an inorganic oxide and (b) an organic polymer, wherein the inorganic oxide comprises organic substituents. Also provided are electrochemical cells comprising such separators.

Abstract: The present disclosure discloses a primary lithium battery comprising a reactive solid cathode, a liquid electrolyte, a separator, and a lithium anode. The liquid electrolyte is ionic conductive and is configured to undergo a series coupling reaction after solid phase reaction of the reactive solid cathode and the lithium anode. The liquid electrolyte comprises a solvent and an electrolyte salt, and a concentration of the electrolyte salt in the liquid electrolyte is 0.1-3 mol/L. The solvent comprises a sulfite ester type compound and an organic solvent, and a concentration of the sulfite ester type compound in the organic solvent is 5 wt % to 90 wt %.

Abstract: A battery includes a positive electrode containing sulfur, a negative electrode containing a material for occluding and releasing a lithium ion, and an electrolytic solution. The electrolytic solution contains at least one of a liquid complex and a liquid salt in which a polysulfide is insoluble or almost insoluble, and a solvent in which a polysulfide is soluble. The electrolytic solution has a Li2S8 saturation sulfur concentration of 10 mM or more and 400 mM or less.

Abstract: A method and electrolysis cell for producing lithium metal at a low temperature. The method includes combining (i) acetonitrile and (ii) a cation bis(trihaloalkylsulfonyl)imide, cation bis(trihalosulfonyl)imidic acid, a cation bis(trihaloalkylsulfonyl)amide, or cation bis(trihaloalkylsulfonyl)amidic acid in a weight ratio of (i) to (ii) about 100:1 to about 5:1 to provide a non-aqueous electrolyte composition. A lithium compound selected from the group consisting of LiOH, Li2O and Li2CO3 is dissolved in the electrolyte composition to provide a lithium doped electrolyte composition. Power is applied to the electrolyte composition to form lithium metal on a cathode of an electrolysis cell. The lithium metal separated from the cathode has a purity of at least about 95 wt. %.

Abstract: The present invention relates to a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing 0.1 to 5% by mass of a compound represented by the following general formula (I) and an energy storage device including the foregoing nonaqueous electrolytic solution. This nonaqueous electrolytic solution is able to improve charging storage properties and discharging storage properties of an energy storage device when used in the high-temperature and high-voltage environment. In the formula, R1 and R2 each independently represent an alkyl group having 1 to 4 carbon atoms.

Abstract: A charging apparatus, a charging method, and the like that can prevent deterioration in a battery by appropriate current adjustment and shorten charging time are provided. A charging apparatus (1) performs charging of a battery (31) with a constant current until a voltage of the battery (31) reaches a predetermined voltage and, after the predetermined voltage is achieved, performs charging of the battery (31) while controlling the current so as to keep the voltage constant. A deterioration measuring unit (31) detects a deterioration condition in the battery (31). A current and voltage adjusting unit (11) specifies an additional current in accordance with the deterioration condition. A power supplying unit (12) supplies the additional current to the battery (31) in addition to the constant current. Such a deterioration condition is specified by a voltage difference or a temperature difference detected by supplying a single amount of current for a certain period.

Abstract: A secondary battery including a cathode having a primary cathode active material and an alkaline source material selected from the group consisting of Na2O, Na2O2, Na2S, NaF, NaCl, NaBr, Li2O, Li2O2, Li2S, LiF, LiCl, LiBr, Na2O, Na2O2, Na2S, NaF, NaCl, and a mixture of any two or more thereof; an anode having an anode active material; an electrolyte; and a separator.

Abstract: In order to provide a lithium ion secondary battery having both high energy density and an excellent charge-rate characteristic, there is provided a lithium ion secondary battery including a positive electrode containing a positive electrode active material made of a lithium composite oxide, and nano-carbon having a Li ion diffusion path as an additive, and an electrolyte solution containing 0.5 mol/l or more of Li[(FSO2)2N] as an electrolyte, LiPO2F2 as an additive, and a ternary-system of ethylene carbonate (EC), dimethyl carbonate (DMC) and ethyl methyl carbonate (EMC), as solvents.

Abstract: A supercapacitor comprising at least one cell formed of two electrodes of opposite polarity. The cell is formed from a positive electrode and a negative electrode made of activated carbon, between which an electrolyte composition is arranged comprising at least one nitrile solvent, at least one salt and also comprising at least one additive from the family of phosphazenes having at least one fluorine atom. One of the compositions comprises acetonitrile, a tetramethylammonium tetrafluoroborate salt and an additive, hexafluorocyclotriphosphazene at a concentration of 1 to 10%.

Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte, the electrolyte including a non-aqueous organic solvent; a lithium salt; and an additive, wherein the additive includes a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, R1 to R6 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted C2 to C10 alkynyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, or a substituted or unsubstituted C3 to C10 cycloalkenyl group, and n is an integer of 1 to 10.

Abstract: A high energy density rechargeable (HEDR) battery employs a combined current limiter/current interrupter to prevent thermal runaway in the event of internal discharge or other disruption of the separator. The combined current limiter/current interrupter is interior to the battery.

Abstract: According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.

Abstract: Silane functionalized ionic liquids are disclosed as a part of an electrolyte for an electrical energy storage device including an aprotic organic solvent; an alkali metal salt; an additive; and an ionic compound including an anion and cation, wherein the cation is attached to a functional group including a silane functional group according to the base Formula (I)

Abstract: An electrolyte for an electrochemical storage device is disclosed. In one embodiment, the electrolyte includes a lithium salt from about 3% to about 20% by weight, a primary solvent from about 15% to about 25% by weight, wide-temperature co-solvents from about 14% to about 55% by weight, interface forming compounds from about 0.5% to about 2.0% by weight, and a flame retardant compound from about 6% to about 60% by weight. The electrolyte interacts with the positive and negative electrodes of the electrochemical storage device to provide both high performance and improved safety such that the electrolyte offers adequate ionic conductivity over the desired operating temperature range, a wide electrochemical stability window, high capacities for both the cathode and anode, low electrode-electrolyte interfacial resistance, and reduced flammability.

Abstract: A non-aqueous electrolyte secondary battery with improved cycle durability includes a power generating element including a positive electrode obtained by forming a positive electrode active material layer containing a positive electrode active material on a surface of a positive electrode current collector, a negative electrode obtained by forming a negative electrode active material layer containing a negative electrode active material on a surface of a negative electrode current collector, and a separator, a ratio of a rated capacity to a pore volume of the separator being 1.55 Ah/cc or more, a ratio of a battery area to a rated capacity being 4.0 cm2/Ah or more, and a rated capacity being 30 Ah or more, wherein a variation in porosity in the separator is 4.0% or less.

Abstract: The present invention may improve the lifetime characteristics of a lithium secondary battery, and particularly, may provide a non-aqueous electrolyte solution or cathode including a phosphate-based compound which may exhibit stable and excellent lifetime characteristics at high temperature and high voltage regardless of the moisture content or the presence of a pressing process of the electrode.

Abstract: The present invention relates to an electrolyte solution for a lithium-sulfur battery and a lithium-sulfur battery including the same. The electrolyte solution for a lithium-sulfur battery according to the present invention exhibits excellent stability, and may improve a swelling phenomenon by suppressing gas generation during lithium-sulfur battery operation.

Abstract: The present invention provides a single-phase or homogeneous solution comprising a high concentration of a salt, in particular a lithium salt, in an organic solvent. Such a high salt content in organic solvent is useful in a variety of applications including, but not limited to, in electrical energy storage devices as well as other devices that can benefit from a low-volatility liquid electrolyte.

Abstract: The teachings herein relate to a gel polymer electrolyte, manufacturing of a gel polymer electrolyte, and an electrochemical device including the gel polymer electrolyte. The present gel polymer electrolyte preferably includes a multi-component crosslinked polymer matrix; a dissociable salt; and an organic solvent. The content of the multi-component crosslinked polymer matrix preferably is 1 to 50 weight percent and preferably has a net structure formed by crosslinking at least three different kinds of cross-linkable monomers. Each of the cross-linkable monomers preferably includes at least two of the following functional groups: a carboxylic group, an acrylate group, or a cyano group. The method of manufacturing the gel polymer electrolyte preferably uses a thermal crosslinking or photo-crosslinking process.

Abstract: The present specification relates to an additive for an electrochemical device including a compound having a silyloxy group, and an electrolyte, an electrode and an electrochemical device.

Abstract: A polymer electrolyte including: a polymer matrix including a cross-linked fluorine-containing polymer; and a liquid electrolyte embedded in the polymer matrix.

Abstract: Provided is a nonaqueous electrolyte secondary battery that allows a current cutoff mechanism to operate appropriately while maintaining high battery performance. The nonaqueous electrolyte secondary battery according to the present invention includes: a battery assembly provided with a positive electrode having a positive electrode active material layer retained on a positive electrode current collector, a negative electrode and a separator; a battery case housing the electrode assembly together with a nonaqueous electrolyte; and a current cutoff mechanism. The positive electrode active material layer includes a positive electrode active material and a conductive material. A compound containing a saturated cyclic hydrocarbon group is retained in at least a portion of the conductive material. The content of the compound containing a saturated cyclic hydrocarbon group is 0.5% by mass or more based on a value of 100% by mass for the total solid content of the positive electrode active material layer.

Abstract: 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.

Abstract: A lithium-sulfur battery cell includes a lithium anode and a carbon-sulfur cathode including a sulfur-impregnated carbon nanostructure defined by one or more layers of elementally doped nanoporous carbon arranged on one or more carbon nanotubes.