25results about "Inorganic electrolytes" patented technology

The present invention relates to a non-aqueous electrolyte for a secondary battery and a secondary battery including the same. By adding a compound of Chemical Formula 1 or Chemical Formula 2 to the non-aqueous electrolyte for a secondary battery according to the present invention, it is possible to improve thermal stability characteristics and high-temperature storage characteristics at room temperature and high temperature.

The present invention provides a non-aqueous electrolyte, and a secondary battery, a battery module, a battery pack, and a power consumption device each containing the non-aqueous electrolyte. The non-aqueous electrolyte includes an electrolyte salt, a non-aqueous solvent, and a first additive, the electrolyte salt includes lithium bisfluorosulfonylimide, lithium tetrafluoroborate, and lithium difluorooxalate borate, the first additive includes fluoroethylene carbonate, and the lithium bisfluorosulfonylimide content A1, the lithium tetrafluoroborate content A2, the lithium difluorooxalate borate content A3, and the fluoroethylene carbonate content B1 based on the total mass of the non-aqueous electrolyte satisfy the following: A1 is 9% to 15%, A1 / A2 is 30 to 1500, A1 / B1 is 3.6 to 15, and A2 / A3 is 0.02 to 30. The secondary battery containing the non-aqueous electrolyte can simultaneously achieve excellent cycle performance, storage performance, safety performance, and dynamic performance.

Provided are a conformable polymer coated lithium metal electrode, a solid electrolyte, and an inorganic molten salt electrolyte for a rechargeable lithium metal battery. Systems and methods are also provided for controlling the electroplating of lithium metal onto negative electrodes to allow for more rapid recharging of lithium metal batteries while minimizing dendrite formation.

This lithium ion secondary battery (1) has a negative electrode (12), a positive electrode (10), an aqueous electrolyte (16) containing a lithium salt, and a separation layer (14) arranged between the negative electrode (12) and the positive electrode (10). The aqueous electrolyte (16) is in contact with the positive electrode (10), and the separation layer (14) includes a non-aqueous solid electrolyte A in which a matrix polymer, the lithium salt and a hydrophobic ionic liquid are compounded.

The invention relates to an anion of formula (I). Such an electroactive anion is, in particular, of particular interest for energy storage applications in electrochemical systems and / or in ionic liquids.

The present invention relates to an electrolyte solution for a lithium-sulfur battery comprising a lithium salt, an organic solvent and an additive, and a lithium-sulfur battery comprising the same, wherein the additive comprises a heterocyclic compound containing at least one double bond, and the heterocycle comprises an oxygen atom or a sulfur atom.

The invention relates to an anion of formula I: (I) Such an electroactive anion is of particular interest for energy storage applications in electrochemical systems and / or in ionic liquids. Figure to be published with the abstract: Figure 1

The main object of the present disclosure is to provide an all-solid battery with a good capacity maintenance rate. In the present disclosure, the above problem is solved by providing an all-solid battery having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, the negative electrode layer containing granules, the granules having a Si-based active material and a molten salt in a solid state at 25°C.

Systems and methods drawn to an electrochemical cell comprising a low temperature ionic liquid comprising positive ions and negative ions and a performance enhancing additive added to the low temperature ionic liquid. The additive dissolves in the ionic liquid to form cations, which are coordinated with one or more negative ions forming ion complexes. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. The ion complexes improve oxygen reduction thermodynamics and / or kinetics relative to the ionic liquid without the additive.

Disclosed are an electrolyte membrane for a lithium-air battery, a method of manufacturing the same, a cathode for a lithium-air battery, a method of manufacturing the same, and a lithium-air battery including the electrolyte membrane and the cathode. Particularly, the lithium-air battery includes i) an electrolyte membrane, which is manufactured using an inorganic melt admixture including two or more nitrogen-oxide compounds and thus may have a very low eutectic point, and ii) a cathode, which is manufactured by reducing a metal at a fast speed on a carbon material. As such, the lithium-air battery is capable of stably operating even at low temperatures and providing high power output.

An electrolyte for a lithium secondary battery according to exemplary embodiments may include a lithium salt; an organic solvent; and an additive including a lactone compound having an epoxy group. Accordingly, it is possible to provide an electrolyte for a lithium secondary battery having excellent high-temperature characteristics and a lithium secondary battery including the electrolyte.

Disclosed herein relates to an electrolyte composition for a lithium secondary battery, wherein the electrolyte composition comprises an electrolyte additive represented by Chemical Formula 1 and has an oxidation potential window at 4.5 V or more, has and thus provides the advantage of removing oxidative degradation of the electrolyte composition during charging and discharging of the battery under high voltage conditions,wherein all the variables are described herein.

Provided is technology pertaining to an electrolyte having exceptional ion conductivity and exceptional strength. This electrolyte is characterized by containing an ionic liquid, an inorganic oxide, and a binder, and moreover is characterized in that: a polycarbonate polyol and a polyisocyanate are used as raw materials in the binder; and at least one functional group selected from the group consisting of C1-4 trialkoxysilyl groups, epoxy groups, and oxetanyl groups is provided at the end of the binder.

A nonaqueous electrolyte secondary battery which is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein: the positive electrode contains a positive electrode active material; the positive electrode active material contains a lithium transition metal composite oxide that contains Ni, Mn and Al; the content ratios of Ni, Mn and Al relative to the metal elements other than Li contained in the lithium transition metal composite oxide are 50% by atom or more, 10% by atom or less and 10% by atom or less, respectively; in cases where the lithium transition metal composite oxide contains Co, the content ratio of Co relative to the metal elements other than Li is 1.5% by atom or less; and the nonaqueous electrolyte contains a fluorosulfonic acid salt.

A main object of the present disclosure is to provide an all solid state battery with capacity durability. The present disclosure achieves the object by providing an all solid state battery including a cathode layer, an anode layer, and a solid electrolyte layer arranged between the cathode layer and the anode layer, wherein the anode layer contains a granulated body including a Si-based active material and a molten salt, which is in a solid state at 25° C.

The invention relates to a non-aqueous electrolyte, and a secondary battery, a battery module, a battery pack and an electric device comprising the same. The non-aqueous electrolyte comprises an electrolyte salt, a non-aqueous solvent and a first additive, the electrolyte salt comprises lithium bis (fluorosulfonyl) imide, lithium tetrafluoroborate and lithium bis (fluorooxalato) borate, the first additive comprises fluoroethylene carbonate, and based on the total mass of the non-aqueous electrolyte, the non-aqueous solvent comprises lithium bis (fluorosulfonyl) imide, lithium tetrafluoroborate and lithium bis (fluorooxalato) borate. The content A1 of the lithium bis (fluorosulfonyl) imide, the content A2 of the lithium tetrafluoroborate, the content A3 of the lithium bis (fluorooxalato) borate and the content B1 of the fluoroethylene carbonate meet the following conditions: A1 is 9%-15%, A3 is 0.01%-0.45%, A1 / A2 is 30-1500, A1 / B1 is 3.6-15, and A2 / A3 is 0.02-30. The secondary battery containing the non-aqueous electrolyte has good cycle performance, storage performance, safety performance and dynamic performance at the same time.

The present invention provides a method of preparing an electrode for a lithium secondary battery which includes forming a first electrolyte layer by immersing an electrode current collector in a composition for forming the first electrolyte layer and applying a current, and forming a second electrolyte layer by immersing the electrode current collector having the first electrolyte layer formed thereon in a composition for forming the second electrolyte layer and applying a current, wherein one of the composition for forming the first electrolyte layer and the composition for forming the second electrolyte layer is a composition for forming an organic electrolyte layer, and another one is a composition for forming an inorganic electrolyte layer, and the composition for forming an inorganic electrolyte layer includes a compound represented by Formula 1.

The invention relates to improved formation protocols for NIB hard carbon anodes in superconcentrated ionic liquid electrolytes. In contrast to established methods for carbonate-based solvents, a high current density 2 C formation protocol resulted in the highest specific capacity during subsequent cycling at 1 / 2 C current density, along with the lowest EIS resistance, compared with 1 C and 1 / 10 C formation protocols. Variable cycling conditions (e.g., 1 / 5 C for long term cycling) were not influenced by the high C-rate treatment, demonstrating the necessity of applying high rate formation protocols for conditioning in these electrolytes. XPS and NMR analysis revealed a thinner SEI layer was formed after high C-rate formation, which can facilitate the Na+ charge transfer and diffusion across the electrolyte / electrode boundary.

A non-aqueous electrolyte and a secondary battery, battery module, battery pack, and electrical device comprising the non-aqueous electrolyte are disclosed. The non-aqueous electrolyte comprises an electrolyte salt, a non-aqueous solvent, and a first additive. The electrolyte salt includes lithium difluorosulfonylimide, lithium tetrafluoroborate, and lithium difluorooxalate borate. The first additive includes fluoroethylene carbonate. Based on the total mass of the non-aqueous electrolyte, the contents of lithium difluorosulfonylimide (A1), lithium tetrafluoroborate (A2), lithium difluorooxalate borate (A3), and fluoroethylene carbonate (B1) satisfy the following: A1 is 9% to 15%, A1 / A2 is 30 to 1500, A1 / B1 is 3.6 to 15, and A2 / A3 is 0.02 to 30. The secondary battery comprising the non-aqueous electrolyte simultaneously exhibits good cycle performance, storage performance, safety performance, and kinetic performance.

Novel, non-aqueous, high salt concentration ammonia based electrolytes, compatible with lithium based anodes are described therein. Said electrolytes are supporting higher voltage provided by novel cathodes and lithium based anodes, which results in high power density batteries over prior art. Various cathodes, separators and cell constructions are also disclosed.

Disclosed are electro-energy or electro-synthetic cells whose architectures allow them to be readily stacked into a cell stack. The cells comprise polymeric cell frames that incorporate within them, functional materials, such as an inter-electrode separator, electrodes, metallic bipolar plates, and the like. For example, an electro-energy or electro- synthetic cell comprises a polymeric cell frame, a first electrode and a second electrode, and an inter-electrode separator positioned between the first electrode and the second electrode. A compressive component is positioned adjacent to the first electrode. The compressive component may be a metallic bipolar plate compressive component and / or a metallic porous transport layer compressive component. In one example the polymeric cell frame is sealed to the metallic bipolar plate by a polymer-to-metal join. In another example at least one polymeric structural locating component locates the metallic bipolar plate against the polymeric cell frame. A cell stack is disclosed comprising a plurality of the cells.

The present invention relates to an electrolyte composition for a lithium secondary battery, which comprises an electrolyte represented by Chemical Formula 1 and has an oxidation potential window of 4.5 V or more, and thus has the advantage of being able to inhibit oxidative decomposition of the electrolyte composition during charging and discharging of the battery under high voltage conditions.

The present invention is directed to aqueous electrolytes that comprise at least one metal salt and at least one polymer. The present invention is also directed to methods of making the electrolyte materials and methods of using the electrolyte materials in batteries and other electrochemical technologies.

To provide a secondary battery containing a non-aqueous electrolyte that can simultaneously achieve excellent cycle performance, storage performance, safety performance, and dynamic performance. [Solution] The non-aqueous electrolyte comprises an electrolyte salt, a non-aqueous solvent, and a first additive, wherein the electrolyte salt comprises lithium bisfluorosulfonylimide, lithium tetrafluoroborate, and lithium difluorooxalate borate, and the first additive comprises fluoroethylene carbonate. Based on the total mass of the non-aqueous electrolyte, the content of lithium bisfluorosulfonylimide A1, the content of lithium tetrafluoroborate A2, the content of lithium difluorooxalate borate A3, and the content of fluoroethylene carbonate B1 satisfy the following conditions: A1 is 9% to 15%, A1 / A2 is 30 to 1500, A1 / B1 is 3.6 to 15, and A2 / A3 is 0.02 to 30.

A non-woven fabric and a battery separator which have good handleability, high tensile strength and a thin thickness. The non-woven fabric is composed of a composite fiber of a core-sheath structure consisting of a core part and a sheath part covering the core part, wherein the core part of the composite fiber is formed of a first polyolefin-based resin, the sheath part of the composite fiber is formed of a second polyolefin-based resin having a melting point lower than that of the first polyolefin-based resin, a plurality of composite fibers are integrated by fusion-bonding the sheath parts each other, and the non-woven fabric has a basis weight of 3 g / m2 or more and an amount of strain, S, of 50 mm2 or less as calculated by a following formula (I)S (mm2)=(MD1−MD0)×(CD0−CD1)  (I).