Abstract: Systems and methods are provided for managing operation of silicon-dominant electrode cells. Polarization in a silicon-dominant cell during charge/discharge cycles may be assessed, with the polarization being assessed, at least in part, based on one or both of charge rate and discharge rate. One or more adjustments may be determined based on the assessing of polarization, and the one or more adjustments may be applied to operation of the silicon-dominant cell. The one or more adjustments configured to compensate for at least some of the effects of polarization in the silicon-dominant cell.

Abstract: An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R11, R12, and R13 are each independently selected from a substituted or non-substituted C1-C12 alkylene group, a substituted or non-substituted C2-C12 alkenylene group, an O—R group, an R0—S—R group or an R0—O—R group, R0 and R are each independently selected from a substituted or non-substituted C1-C6 alkylene group. n is 0 or 1. R14 is H, fluorine, a cyano group, a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C2-C12 alkenyl group, an O—R1 group, an R0—S—R1 group, or an R0—O—R1 group. R0 is a substituted or non-substituted C1-C6 alkylene group, and R1 is a substituted or non-substituted C1-C6 alkyl group.

Abstract: The present application provides a positive electrode active material which may be in a particulate form and comprise a compound represented by Formula 1: NaxAyM1[M2(CN)6]?·zH2O??Formula 1 wherein, A is selected from at least one of an alkali metal element and an alkaline earth metal element, and the ionic radius of A is greater than the ionic radius of sodium; M1 and M2 are each independently selected from at least one of a transition metal element, 0<y?0.2, 0<x+y?2, 0<??1, and 0?z?10; and the particles of the positive electrode active material may have a gradient layer in which the content of the A element decreases from the particle surface to the particle interior.

Abstract: A cathode active material for an all-solid-state battery includes: active material particles; and a coating layer covering at least a portion of the surface of the active material particles, wherein the coating layer includes lithium (Li), niobium (Nb), and at least one element selected from the group consisting of vanadium (V), zirconium (Zr) and combinations thereof.

Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material. The electrolytic solution includes a cyclic sulfuric acid ester compound, a cyclic ether compound, and a chain alkyl dinitrile compound. A ratio of a weight (mg) of the cyclic sulfuric acid ester compound to a weight (g) of the positive electrode active material is from 0.01 to 2.

Abstract: The present application relates to an electrolyte and an electrochemical device including the same. The electrolyte includes a diboronic acid compound and a nitrile compound, so that the storage performance and cycle performance of the electrochemical device using the electrolyte can be remarkably improved.

Abstract: An electrolyte capable of lip roving the stability of a lithium-metal battery is provided. The electrolyte includes an organic solvent, a cosolvent, which is different from the organic solvent and includes a fluorine-based compound, and an additive having a lower lowest unoccupied molecular orbital (LUMO) value than the organic solvent.

Abstract: A hard carbon. A total quantity of adsorbed nitrogen under a relative pressure P/P0 of nitrogen between 10?8 and 0.035 is V1 cm3 (STP)/g and a total quantity of adsorbed nitrogen under a relative pressure P/Po of nitrogen between 0.035 and 1 is V2 cm3 (STP)/g in a nitrogen adsorption isotherm determined at a temperature of 77 K for the hard carbon. The hard carbon satisfies: V2/V1?0.20 and 20?V1?150, where P represents an actual pressure of nitrogen, and P0 represents a saturated vapor pressure of nitrogen at a temperature of 77 K.

Abstract: An electrolyte includes a fluorinated cyclic carbonate, a multi-nitrilemulti-nitrile compound having an ether bond and a cyclic carbonate having a carbon-carbon double bond. Based on a total weight of the electrolyte, a weight percentage (Cf) of the fluorinated cyclic carbonate is greater than a weight percentage (Cn) of the multi-nitrilemulti-nitrile compound having an ether bond. The electrolyte can control the expansion of the electrochemical device, so that the electrochemical device has excellent cycle, storage and/or floating-charge performance.

Abstract: An electrolyte includes a fluorinated cyclic carbonate, a multi-nitrilemulti-nitrile compound having an ether bond and a cyclic phosphonic anhydride. Based on a total weight of the electrolyte, a weight percentage (Cf) of the fluorinated cyclic carbonate is greater than a weight percentage (Cn) of the multi-nitrilemulti-nitrile compound having an ether bond. The electrolyte can control the expansion of the electrochemical device, so that the electrochemical device has excellent cycle, storage and/or floating-charge performance.

Abstract: Disclosed herein is a redox flow battery (RFB). The battery generally includes: a positive electrolyte that is a first metal ion, a negative electrolyte that is a second metal ion, an ion exchange membrane positioned between the positive electrolyte and the negative electrolyte. The membrane is configured to restrict and/or prevent the passage of the first metal ion and/or the second metal ion therethrough, and is configured to maintain ionic conductivity between the positive electrolyte and the negative electrolyte.

Abstract: An anode material includes a lithiated silicon oxide material and a MySiOz layer. The lithiated silicon oxide material includes Li2SiO3, Li2Si2O5 or a combination thereof, and the MySiOz layer coats the lithiated silicon oxide material; M includes Mg, Al, Zn, Ca, Ba, B or any combination thereof; and 0<y<3, and 0.5<z<6. The anode material has high first discharge coulombic efficiency, high gram capacity, and good cycle performance.

Abstract: The present invention relates to a method of manufacturing a secondary battery with improved resistance. According to the present invention, since the electrode assembly with succinonitrile interposed at the interface between the electrode and the separator is manufactured and then laminated, a high-pressure process is not required during lamination compared to the prior art, thereby improving processability, and since succinonitrile is dissolved in the electrolyte solution, it exhibits an effect of improving the resistance of the battery.

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous solvent includes a nonaqueous solvent and a lithium slat. The nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II. Based on a total weight of the nonaqueous solvent, a weight percentage of the high oxidation potential solvent is 10% to 60%. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

Abstract: The present application relates to an electrochemical cell comprising a nitrile-based solvent based electrolyte, wherein the electrochemical cell includes an electrolyte salt that comprises NaClO4, and the electrolyte salt has a maximum electrolyte conductivity at a discharge state Molar concentration greater than 1.

Abstract: An electrolyte composition contains a propane sultone compound substituted with a specific substituent, a cyclic fluorocarbonate-based compound and a nonaqueous solvent. A secondary battery containing the electrolyte composition is disclosed. The electrolyte composition has excellent SEI film-forming ability and HF-removing ability by containing the cyclic fluorocarbonate-based compound together with the propane sultone compound substituted with a specific substituent, so that the lifespan characteristic and stability at high temperature can be improved.

Abstract: Embodiments described herein relate generally to electrochemical cells including a selectively permeable membrane and systems and methods for manufacturing the same. In some embodiments, the selectively permeable membrane can include a solid-state electrolyte material. In some embodiments, electrochemical cells can include a cathode disposed on a cathode current collector, an anode disposed on an anode current collector, and the selectively permeable membrane disposed therebetween. In some embodiments, the cathode and/or anode can include a slurry of an active material and a conductive material in a liquid electrolyte. In some embodiments, a catholyte can be different from an anolyte. In some embodiments, the catholyte can be optimized to improve the redox electrochemistry of the cathode and the anolyte can be optimized to improve the redox electrochemistry of the anode. In some embodiments, the selectively permeable membrane can be configured to isolate the catholyte from the anolyte.

Abstract: A sulfur-carbon composite including a porous carbon material; a coating layer on a surface of the porous carbon material, the coating layer including a compound with electrolyte solution impregnation property; and sulfur, a method for preparing the same, and a positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same are disclosed.

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive. The nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the additive is a fluorinated cyclic carbonate. The carbonate solvent is a linear carbonate, or a mixture of linear carbonate and cyclic carbonate, the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the fluorinated cyclic carbonate is selected from compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

Abstract: An aspect of the present invention is an energy storage device including an electrode assembly that has a negative electrode and a positive electrode, where the negative electrode contains a negative electrode substrate and a negative active material, and has a negative active material layer disposed in an unpressed shape along at least one surface of the negative electrode substrate, the negative active material includes solid graphite particles as a main component, and the solid graphite particles have an aspect ratio of 1 or more and 5 or less.

Abstract: This application provides a method for capacity recovery of lithium-ion secondary battery. The method includes the following steps: (1) providing a capacity-degraded lithium-ion battery; (2) providing a capacity recovery agent, the capacity recovery agent including a lithium iodide and an organic solvent, and the organic solvent being used to dissolve the lithium iodide; (3) injecting the capacity recovery agent into the capacity-degraded lithium-ion battery; (4) enabling the capacity recovery agent to react inside the lithium-ion battery; and (5) pouring out the liquid mixture inside the reacted lithium-ion battery and injecting an electrolyte into the lithium-ion battery.

Abstract: A non-aqueous electrolyte solution for a battery, includes: an additive A which is at least one selected from the group consisting of compounds represented by the following Formula (A); an additive B which is at least one selected from the group consisting of lithium monofluorophosphate and lithium difluorophosphate; and an additive C which is at least one selected from the group consisting of compounds containing a sulfur-oxygen bond. In Formula (A), R1 represents a fluorine atom, or a fluorinated hydrocarbon group having from 1 to 6 carbon atoms; and each of R2 to R4 independently represents a hydrogen atom, a fluorine atom, a hydrocarbon group having from 1 to 6 carbon atoms, or a fluorinated hydrocarbon group having from 1 to 6 carbon atoms.

Abstract: The electrode manufacturing system comprises a cutting device. The cutting device cuts an electrode material along one direction of the electrode material to manufacture electrodes. The electrode material comprises first sections and a second section. The first section includes an active material doped with alkali metal, and extends in the one direction. The second section is located between two adjacent first sections of the first sections. In the second section, the active material doped with alkali metal is absent. The cutting device cuts the second section.

Abstract: Systems and methods are provided for a reaction barrier between an electrode active material and a current collector. An electrode may comprise an active material, a metal foil, and a polymer. The polymer (such as polyamide-imide (PAI)) may be configured to provide a carbonized barrier between the active material and the metal foil after pyrolysis.

Abstract: Disclosed herein are rechargeable aluminum organic batteries and active materials used therein. The cathodic materials used herein comprise a macrocycle comprising a substituted or unsubstituted phenanthrenequinone unit and a graphite flake.

Abstract: Set forth herein are processes for making and using electrolytes (also known as catholytes when the electrolytes are mixed with cathode active materials) for a positive electrode of an electrochemical cell. The catholytes include additives that prevent surface fluorination of lithium-stuffed garnet solid-state separators in contact with the positive electrode. Also set forth herein are electrochemical devices which include the catholytes in addition to a lithium-stuffed garnet solid-state electrolyte separator.

Abstract: A lithium secondary battery is provided with a higher capacity and a longer life. The lithium secondary battery includes: a cathode containing a material that is capable of inserting and desorbing lithium ions; a lithium ion conductive electrolyte; and an anode containing a material that is capable of occluding and releasing lithium metal or lithium ions, wherein the electrolyte contains a metal 6,6?-bis(benzoylamino)-2,2?-bipyridine (babp) complex, which is a metal complex.

Abstract: A composite solid electrolyte (410) for lithium batteries can include a solid polymer (440), a lithium salt (450) distributed in the solid polymer (440), and lithium iron phosphate (460) distributed in the solid polymer (440). A solid state lithium battery cell (400) can include a composite solid electrolyte layer (410), an anode (420) containing lithium in contact with a first surface of the composite solid electrolyte layer (410): and a cathode (430) in contact with a second surface of the composite solid electrolyte layer (410). The composite solid electrolyte layer (410) can include a solid polymer (440), a lithium salt (450) distributed in the solid polymer (440), and lithium iron phosphate (460) distributed in the solid polymer (440).

Abstract: An electrode binder composition for a rechargeable battery includes emulsion polymer particles comprising a1) first repeat units derived from conjugated diene monomers; one or more second repeat units selected from the group consisting of b1) repeat units derived from aromatic vinyl monomers, b2) repeat units derived from alkyl (meth)acrylate monomers, b3) repeat units derived from (meth)acryl amide monomers, b4) repeat units derived from nitrile based monomers, and b5) repeat units derived from unsaturated carbonic acid monomers; and c1) third repeat units derived from monomers represented by the following Chemical Formula 1: wherein R1 is hydrogen, or a C1-10 alkyl group, X is hydrogen or a methyl group, Y is oxygen atom, or —NR2-, R2 is hydrogen, or a C1-10 alkyl group, and Z is a C1-10 alkyl group.

Abstract: A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.

Abstract: The present invention provides a method for the fabrication of a LaZrGa(OH)x metal hydroxide precursor with a co-precipitation method in a continuous TFR. The present invention also provides a method for the fabrication of an ion-doped all-solid-state lithium-ion conductive material with lithium ionic conductivity, and mixing with the polymer-based material, then using a doctor-blade coating method to prepare free-standing double- or triple-layered organic-inorganic hybrid solid electrolyte membranes. Furthermore, the present invention provides an all-solid-state lithium battery using the aforementioned hybrid solid electrolyte membrane and the electrochemical performance of the all-solid-state lithium battery.

Abstract: The present invention provides a lithium secondary battery which includes a positive electrode including a first lithium cobalt oxide and a second lithium cobalt oxide which have different average particle diameters (D50) from each other, a negative electrode including first graphite and second graphite which have different average particle diameters (D50) from each other, and an electrolyte including a a first additive as a nitrile-based compound, wherein the first lithium cobalt oxide and the second lithium cobalt oxide each independently contain aluminum in a concentration of 2,500 ppm to 4,000 ppm.

Abstract: Provided is a method for determining the wetting degree of a lithium ion battery cell using a low current test. The wetting degree determination method according to the present disclosure includes a) obtaining, as a reference charge profile, a charge profile recorded while charging a reference battery cell having undergone receiving an electrode assembly and an electrolyte solution in a case, assembling and pre-aging with a low current of 0.01 C-rate or less, b) measuring and recording a charge profile while charging another battery cell having undergone receiving an electrode assembly and an electrolyte solution in a case, assembling and pre-aging with a low current of 0.01 C-rate or less in the same way as the reference battery cell, and c) determining the wetting degree of another battery cell relative to the reference battery cell by comparative analysis of the reference charge profile and the measured charge profile.

Abstract: The present invention pertains to a lithiated polyamide-imide (LiPAI) polymer, a method of making the LiPAI, an electrode-forming composition comprising the LiPAI, a method of making a negative electrode with the electrode-forming composition; and a lithium-ion battery comprising the negative electrode.

Abstract: A silicon and sulfur battery and methods are shown. In one example, the silicon and sulfur battery includes a lithium chip coupled to a silicon electrode. In some examples, the silicon electrode is formed from silicon nanoparticles and carbon.

Abstract: A battery has anodes, cathodes, separators, and electrolyte. Particles of loose hydrated alkali aluminum silicate contact the anodes and cathodes and are immersed in the electrolyte, to enhance operability of the battery. The maximum dimensions of at least a majority of the particles are between about 5-10 mm, and they range in shape from spherical to irregular.

Abstract: (A) A first lithium-ion battery is prepared. (B) A capacity loss of the first lithium-ion battery is detected. (C) Capacity restoration treatment is performed on the first lithium-ion battery having a detected capacity loss to produce a second lithium-ion battery. The first lithium-ion battery includes at least a positive electrode, a negative electrode, and an electrolyte solution. The electrolyte solution contains a lithium salt, a solvent, and an additive in advance of the detecting a capacity loss. The additive has an oxidation potential. The oxidation potential is higher than an OCP of the positive electrode in the first lithium-ion battery having a state of charge of 100%. The capacity restoration treatment involves charging the first lithium-ion battery in such a way that at least part of the additive is oxidized.

Abstract: According to one embodiment, nano metal compound particles are provided. The nano metal compound particles have an average particle size of 50 nm or less. The nano metal compound particles have a peak ?t of 2.8 eV or less. The peak ?t corresponds to a resonant frequency of an oscillator according to a spectroscopic ellipsometry method fitted to a Lorentz model.

Abstract: Provided are electrochemical secondary cells that exhibit excellent abuse tolerance, deep discharge and overcharge conditions including at extreme temperatures and remain robust and possess excellent performance. Cells as provided herein include: a cathode a polycrystalline cathode electrochemically active material including the formula Li1+xMO2+y, wherein ?0.9?x?0.3, ?0.3?y?0.3, and wherein M includes Ni at 80 atomic percent or higher relative to total M, an anode including an anode electrochemically active material defined by an electrochemical redox potential of 400 mV or greater vs Li/Li+.

Abstract: A flexible energy storage device with a glycerol-based gel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the gel electrolyte. The electrolytes can be in gel form, bendable and stretchable in a device. The gel electrolyte can include glycerol, redox-active molybdenum-containing ions, and a secondary ionic substance. The secondary ionic substance can include a salt. The gel electrolyte can have a density of 1.4 to 1.9 g/cm3 and an ionic conductivity of 2.3×10?4 to 3.2×10?4 Scm?1. The flexible energy storage device may retain greater than 95% of an unbent energy storage capacity when bent at an angle of 10 to 170°.

Abstract: The purpose of the present invention is to shorten the manufacturing time in a method for manufacturing a non-aqueous-electrolyte secondary cell. In the method for manufacturing a non-aqueous-electrolyte secondary cell according to one embodiment of the present invention, during initial charging/discharging of a non-aqueous-electrolyte secondary cell comprising a negative electrode that includes a negative-electrode active material, a positive electrode that includes a Li—Ni composite oxide represented by the general formula LiaNixM(1-x)O2 (where 0<a?1.2, 0.6?x<1, and M is at least one element selected from Co, Mn, and Al) as a positive-electrode active material, and a non-aqueous electrolyte, charging is performed so that the positive electrode potential based on lithium is 4.1-4.25 V in an open circuit state after charging.

Abstract: An engineered particle for an energy storage device, the engineered particle includes an active material particle, capable of storing alkali ions, comprising an outer surface, a conductive coating disposed on the outer surface of the active material particle, the conductive coating comprising a MxAlySizOw film; and at least one carbon particle disposed within the conductive coating. For the MxAlySizOw film, M is an alkali selected from the group consisting of Na and Li, and 1?x?4, 0?y?1, 1?z?2, and 3?w?6.

Abstract: An electrolyte solution containing at least one compound (1) selected from the group consisting of a compound represented by the following formula (1-1) (wherein R111 to R113 are each individually a C1-C4 linear or branched alkyl group, and at least one selected from R111 to R113 is a C1-C4 branched alkyl group) and a compound represented by the following formula (1-2) (wherein R121 to R123 are each individually a C1-C4 linear or branched alkyl group, and at least one selected from R121 to R123 is a C1-C4 branched alkyl group).

Abstract: According to the present disclosure, it is possible to appropriately prevent a shortage of a nonaqueous electrolyte solution in an electrode body and keep battery performance of a nonaqueous electrolyte secondary battery at a favorable state. A nonaqueous electrolyte secondary battery disclosed herein includes an electrode body and a nonaqueous electrolyte solution. The electrode body includes an electrolyte solution passage that is a flow passage through which the nonaqueous electrolyte solution flows between the inside and the outside of the electrode body.

Abstract: This disclosure relates generally to solid electrolyte membranes made from the combination of a polymer, a lithium salt group comprising of inorganic and/or organic anion, cyano molecules, a plasticizer having such a high dielectric solvent, and, optionally, a filler having nano/micron size particles to prevent the crystallization of such a polymer matrix. The resultant structures are solid electrolyte membranes exhibiting high ionic conductivity, thermal and electrochemical stability capable of enhanced cycling performance as well as high mechanical strength able to permit improved battery manufacturing properties.

Abstract: An electrode assembly and a lithium-ion battery are described. The electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer, the negative electrode plate further includes a lithium metal layer, the lithium metal layer is formed by a plurality of regular or irregular strip-shaped lithium-rich regions, and the plurality of lithium-rich regions present a discontinuous pattern of spaced distribution in a length direction of the negative electrode plate. The electrode assembly further satisfies that: negative electrode capacity per unit area/positive electrode capacity per unit area=1.2 to 2.1 and negative electrode capacity per unit area/(positive electrode capacity per unit area+capacity of the lithium metal layer on the surface of the negative electrode active substance layer per unit area× 80%)? 1.10.

Abstract: This application provides a method for capacity recovery of lithium-ion secondary battery. The method includes the following steps: (1) providing a capacity-degraded lithium-ion secondary battery; (2) providing a capacity recovery agent, the capacity recovery agent including a p-phenylenediamine compound, a lithium salt, and an organic solvent, and the organic solvent being used to dissolve the p-phenylenediamine compound and the lithium salt; (3) injecting the capacity recovery agent into the lithium-ion secondary battery; (4) enabling the capacity recovery agent to react inside the lithium-ion secondary battery; and (5) pouring out the liquid mixture inside the lithium-ion secondary battery after reaction and injecting an electrolyte into the lithium-ion secondary battery.

Abstract: Provided are a novel crosslinking agent compound, and a superabsorbent polymer prepared by using the same. More particularly, provided are a crosslinking agent compound having a novel structure, which exhibits excellent crosslinking property and thermal degradability, and a superabsorbent polymer prepared by using the same.

Abstract: A method of producing a lithium-ion secondary battery includes the following (?) and (?): (?) preparing a lithium-ion secondary battery, the lithium-ion secondary battery including at least a positive electrode, a negative electrode, and an electrolyte solution; and (?) adding a zwitterionic compound to the electrolyte solution. The negative electrode includes at least a negative electrode active material and a film. The film is formed on a surface of the negative electrode active material. The film contains a lithium compound. The zwitterionic compound contains a phosphonium cation or an ammonium cation and a carboxylate anion in one molecule.

Abstract: Electrolytes and electrolyte additives for energy storage devices comprising phosphorus based compounds 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, an electrolyte comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a phosphorus based compound.