55results about "Inorganic electrolytes" patented technology

Discussed is an electrolyte solution for a lithium-sulfur battery including a lithium salt, an organic solvent and an additive, and a lithium-sulfur battery including the same, wherein the additive includes a heterocyclic compound containing at least one double bond, and a heterocycle of the heterocyclic compound comprises an oxygen atom or a sulfur atom.

Provided are cells, such as lithium-sulfur cells, comprising a quasi-solid state liquid electrolyte, wherein the electrolyte comprises a room temperature ionic liquid and an Li salt, and certain concentration subsets of FSI- anions, wherein the electrolyte has ultralow or negligible solvating power for one or more intermediate polysulfide species (Li2Sn, 4 ≤ n ≤ 8).

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.

A three-dimensionally ordered macroporous (3DOM) metal-organic framework material (MOF)-based quasi-solid-state electrolyte thin film for a safe quasi-solid-state lithium secondary battery are provided by the present invention. In detail, the above quasi-solid-state electrolyte combines 3DOM-MOFs and the electrolytes like polymer and traditional liquid electrolyte. The special pore structures in 3DOM-MOFs could both fill the polymer electrolyte and liquid electrolyte with macropores and micropores, respectively. This unique structure could significantly enhance the Li+ conductivity rate through the different kinds of electrolytes in the corresponding pore structures as well as improve the battery performance. More importantly, this quasi-solid-state electrolyte is much safer than the traditional organic electrolyte. It should be easy to scale-up since the procedures are simple.

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 cells, such as lithium-sulfur cells, comprising a quasi-solid state liquid electrolyte, wherein the electrolyte comprises a room temperature ionic liquid and an Li salt, and certain concentration subsets of FSI- anions, wherein the electrolyte has ultralow or negligible solvating power for one or more intermediate polysulfide species (Li2Sn, 4 ≤ n ≤ 8).

A rechargeable lithium battery comprising an anode, a cathode, and a quasi-solid or solid-state electrolyte in ionic communication with the anode and the cathode, wherein the electrolyte comprises a polyphosphazene polymer and a lithium salt dissolved or dispersed in the polymer, wherein the lithium salt occupies a weight fraction from 0.1% to 50% based on the total weight of the lithium salt and the polyphosphazene polymer combined; wherein the polyphosphazene polymer permeates into the anode and / or the cathode and in physical contact with the anode active material inside the anode and / or in physical contact with or chemically bonded to the cathode active material inside the cathode; and wherein the electrolyte further comprises from 0% to 50% by weight of a non-aqueous liquid solvent dispersed in the polymer, based on the total weight of the lithium salt, the polymer, and the non-aqueous liquid solvent combined.

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.

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.

The present invention can be applied to a technical field related to secondary batteries, and, for example, a separator structure for a lithium ion secondary battery, a manufacturing method therefor, and a secondary battery using same. The present invention relates to a separator structure provided inside a secondary battery, the structure being capable of comprising: a porous support comprising a first surface and a second surface; and an ion surface-treated nanocellulose fiber placed on the first surface and / or the second surface of the support.

The present application provides a non-aqueous electrolyte and a secondary battery, a battery module, a battery pack and an electrical device containing the same. The non-aqueous electrolyte includes an electrolyte salt, a non-aqueous solvent, and a first additive, wherein the electrolyte salt includes lithium bis(fluorosulfonyl)imide, lithium tetrafluoroborate, and lithium difluoro(oxalate)borate, and wherein the first additive includes fluoroethylene carbonate, and wherein based on the total mass of the non-aqueous electrolyte, lithium bis(fluorosulfonyl)imide is present in a mass content of A1, lithium tetrafluoroborate is present in a mass content of A2, lithium difluoro(oxalate)borate is present in a mass content of A3, fluoroethylene carbonate is present in a mass content of B1, and A1, A2, A3 and B1 satisfy that: A1 is from 9% to 15%, A1 / A2 is from 30 to 1500, A1B1 is from 3.6 to 15 and A2 / A3 is from 0.02 to 30. The present application enables the secondary battery to simultaneously have good cycling performance, storage performance, hot box safety performance and kinetic performance.

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.

A nonaqueous electrolyte includes an organic solvent containing a carbonate solvent and 10 to 50 wt % of methyl acetate, based on a total weight of the organic solvent; and a plurality of lithium salts dissolved in the organic solvent. The lithium salts include 0.25 to 4.5 wt % of lithium difluorophosphate, 0.25 to 3 wt % of lithium bis(oxalato)borate, each based on a total weight of the nonaqueous electrolyte, and lithium hexafluorophosphate.

An electrolyte solution that satisfies at least one of the following (A) and (B) can improve the charge / discharge cycle performances of nonaqueous secondary batteries containing a lithium-free transition metal sulfide as a cathode active material and can also improve initial coulombic efficiency when a specific additive is used: (A) the nonaqueous secondary battery electrolyte solution contains an organic solvent containing a cyclic carbonate compound, and the content of the cyclic carbonate compound is 80 to 100 vol%, and the content of a chain carbonate compound is 0 to 20 vol%, based on the total amount of the organic solvent taken as 100 vol%; and (B) the nonaqueous secondary battery electrolyte solution contains an organic solvent containing a cyclic carbonate compound and an additive. A method for discharging a nonaqueous secondary battery containing a lithium-free transition metal sulfide as a cathode active material, including setting the depth of discharge during a charge-and-discharge cycle to 70 to 90%, can improve the charge / discharge cycle performances of nonaqueous secondary batteries containing a lithium-free transition metal sulfide as a cathode active material.

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.

A solid electrolyte according to the present disclosure has a composition represented by MgxZry(POz)2 (0<x≤3.5, 0≤y<1.5, and 3≤z≤4.25), and includes an amorphous part. The composition may be represented by Mgx(POz)2 (3≤x≤3.5 and 3≤z≤4.25). The composition may be represented by MgxZry(POz)2 (0<x<3.5, 0<y<1.5, and 3≤z≤4.25).

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.

Provided is a non-aqueous electrolyte solution for a lithium secondary battery containing a lithium salt, an organic solvent and a phosphoric acid-based additive of specific structure. By adding the phosphoric acid-based additive according to an embodiment of the present invention to the electrolyte solution, the lithium secondary battery can significantly improve the high temperature stability.

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.

Electrolytic solution for lithium secondary batteries, the electrolytic solution comprising: lithium salt; a solvent; and a functional additive comprising a high voltage additive, wherein the high voltage additive comprises 1-fluoroethyl methyl carbonate (FEMC) represented by [Formula 1], wherein the high-voltage additive is 1 to 3 wt.%, based on the weight of the electrolytic solution, wherein the functional additive further comprises a negative electrode foil additive and wherein the negative electrode foil additive comprises vinylene carbonate (VC), wherein the negative electrode foil additive is 0.5 to 3.0 wt.% based on the weight of the electrolytic solution, and wherein the high-voltage additive and the negative electrode foil additive total 1.5 to 6 wt.%, based on the weight of the electrolytic solution.

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 is an alkali metal ion conductor which behaves as a liquid at a low temperature. The alkali metal ion conductor of the present disclosure is an alkali metal ion conductor comprising a salt, wherein the salt comprises a first cation, a second cation, and a first anion, the first cation is a tetraalkylammonium ion having an alkyl chain length of 5 or more, the second cation is an alkali metal ion, and the first anion is at least one anion selected from the group consisting of a bromine ion, a chlorine ion, and a hydrogen sulfate ion.

Electro-energy or electro-synthetic cells whose architectures allow them to be readily stacked into a cell stack. The cells include 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 includes 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 includes a plurality of the cells.

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.

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