Abstract: A self-supporting supercapacitor electrode adapted for attachment to an electrical circuit characterised by comprising a rigid or mechanically resilient, electrically-conductive sheet consisting essentially of a matrix of from 70-90% by weight of activated carbon and 5 to 25% by weight conductive carbon uniformly dispersed in from 5 to 20% by weight of a polymer binder.

Abstract: A cathode active surface includes a conductive framework of tangled nanofibers with lumps of amorphous carbon-sulfur distributed within them. The amorphous carbon-sulfur lumps are of carbon bonded to sulfur via carbon-sulfur chemical bonds and to the nanofibers via chemical bonds. The strength of the chemical bonds secures sulfur atoms within electrode to suppress the formation of undesirable polysulfides when in contact with an electrolyte. The tangled nanofibers bind the amorphous carbon-sulfur lumps and enhance thermal and electrical conductivities.

Abstract: The present invention provides a negative electrode for a lithium metal battery and a lithium metal battery comprising the same, the negative electrode comprising: a first negative electrode including a lithium metal negative electrode; and a second negative electrode which is disposed on the first negative electrode and includes a coating layer including a carbon-based material. By using the negative electrode for a lithium metal battery, a lithium metal battery can have an improved charge and discharge efficiency and life time.

Abstract: The present application provides a silicon-oxygen composite negative electrode material and method for preparation thereof and lithium-ion battery. The silicon-oxygen composite negative electrode material comprises a silicon-oxygen composite negative electrode material comprising SiOx, non-Li2Si2O5 lithium-containing compound, and Li2Si2O5; said Li2Si2O5 is coated on the surface of the non-Li2Si2O5 lithium-containing compound; 0?x?1.2. The preparation method comprises: mixing a first silicon source with a reducing lithium source and roasting, to obtain a composite material containing a non-Li2Si2O5 lithium-containing compound; the composite material containing the non-Li2Si2O5 lithium-containing compound is fused with a second silicon source and then subjected to heat treatment to obtain a silicon-oxygen composite negative electrode material.

Abstract: In an embodiment, a Li-ion battery cell comprises an anode electrode with an electrode coating that (1) comprises Si-comprising active material particles, (2) exhibits an areal capacity loading in the range of about 3 mAh/cm2 to about 12 mAh/cm2, (3) exhibits a volumetric capacity in the range from about 600 mAh/cc to about 1800 mAh/cc in a charged state of the cell, (4) comprises conductive additive material particles, and (5) comprises a polymer binder that is configured to bind the Si-comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against volume expansion during the one or more charge-discharge cycles of the battery cell while maintaining the electrical connection between the metal current collector and the Si-comprising active material particles.

Abstract: A secondary battery includes a first electrode collector layer and a second electrode collector layer, which face each other, a plurality of first active material layers that electrically contact the first electrode collector layer and are substantially perpendicular to the first electrode collector layer, a plurality of second active material layers that electrically contact the second electrode collector layer and are substantially perpendicular to the second electrode collector layer, and a first conductor layer that electrically contacts the first electrode collector layer and is inserted into the plurality of first active material layers.

Abstract: An electrode assembly for a lithium secondary battery including an electrode, an insulation film, a separator and a counter electrode, wherein the insulation film is formed on an entire surface of one or both sides of the electrode, and the insulation film is an organic-inorganic mixed film including inorganic particles and a binder polymer. Also discussed is a manufacturing method thereof, and a lithium secondary battery including the same.

Abstract: Electric batteries are provided wherein the positively charged electrode contacts an aqueous layer containing material which is reduced during electric discharge and/or metal ions are transported through special electrolyte that inhibits dendritic deposition on the negatively charged electrode. Methods described include electrolyte compositions including organoborate anions and cations with low charge density, and aqueous solutions containing bromate and/or bromide anions and high concentrations of dissolved salts.

Abstract: A thin-film lithium ion battery includes a negative electrode layer, a positive electrode layer, an electrolyte layer disposed between the positive and negative electrode layers, and a lithium layer with lithium pillars extending therefrom formed in the negative electrode layer adjoining the electrolyte layer.

Abstract: A composite sulfide electrode and a manufacturing method therefor are disclosed. A method for manufacturing a composite sulfide electrode comprises the steps of: preparing a mixed solution of polyacrylonitrile (PAN) and a metallic oxide; stirring the prepared mixed solution; electrospinning the stirred mixed solution to prepare a wire-type precursor bearing a metallic oxide in PAN; drying the prepared wire-type precursor; mixing the dried wire-type precursor and a sulfur powder; and injecting a gas to the mixture of the wire-type precursor and the sulfur powder to sulfurize the wire-type precursor.

Abstract: A positive electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive electrode plate includes a positive current collector, and a positive active material layer disposed on at least one surface of the positive current collector. The positive active material layer includes a first active material layer and a second active material layer that are sequentially stacked in a direction away from the surface. The first active material layer includes a first composite particle. The first composite particle includes a first lithium iron phosphate particle and a first carbon layer that coats a surface of the first lithium iron phosphate particle. The second active material layer includes a second composite particle. The second composite particle includes a second lithium iron phosphate particle and a second carbon layer that coats a surface of the second lithium iron phosphate particle.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and an electrolyte liquid. The negative electrode includes a negative electrode mixture layer containing a first negative electrode active material and a negative electrode collector to which the negative electrode mixture layer is adhered. The first negative electrode active material contains a first lithium silicate phase containing lithium, silicon, and oxygen and first silicon particles dispersed in the first lithium silicate phase. An atomic ratio A1:O/Si of the oxygen to the silicon in the first lithium silicate phase satisfies a relationship of 2<A1?3. At a surface side of the negative electrode, an existence ratio of the first negative electrode active material in the negative electrode mixture layer is high as compared to that at a negative electrode collector side of the negative electrode.

Abstract: A hybrid cathode for a Li—S battery may include an intercalation-type material and a conversion-type material. The conversion-type material, such as sulfur, may increase the gravimetric energy density, Eg, of the battery. The intercalation-type material may increase the electrical and ionic conductivity of the cathode and contribute to the capacity of the battery, enabling replacement of partial high-surface-area conductive carbon and increasing the volumetric energy density, Ev. In combination, the conversion-type material and the intercalation-type material may be used to increase Eg and Ev simultaneously while providing sufficient rate capability. In one example, a hybrid cathode includes an electrode and a cathode material. The cathode material includes a first concentration of an intercalation compound, a second concentration of sulfur, and a third concentration of carbon. Furthermore, the intercalation compound and sulfur contribute to the capacity of the Li—S battery within a voltage window of 1.

Abstract: The present invention provides a negative electrode for a lithium metal battery and a lithium metal battery comprising the same, the negative electrode comprising: a first negative electrode including a lithium metal negative electrode; and a second negative electrode which is disposed on the first negative electrode and includes a coating layer including a carbon-based material. By using the negative electrode for a lithium metal battery, a lithium metal battery can have an improved charge and discharge efficiency and life time.

Abstract: In an embodiment, a Li-ion battery cell comprises an anode electrode with an electrode coating that (1) comprises Si-comprising active material particles, (2) exhibits an areal capacity loading in the range of about 3 mAh/cm2 to about 12 mAh/cm2, (3) exhibits a volumetric capacity in the range from about 600 mAh/cc to about 1800 mAh/cc in a charged state of the cell, (4) comprises conductive additive material particles, and (5) comprises a polymer binder that is configured to bind the Si-comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against volume expansion during the one or more charge-discharge cycles of the battery cell while maintaining the electrical connection between the metal current collector and the Si-comprising active material particles.

Abstract: Provided is a multivalent metal-ion battery comprising an anode, a cathode, and an electrolyte in ionic contact with the anode and the cathode to support reversible deposition and dissolution of a multivalent metal, selected from Ni, Zn, Be, Mg, Ca, Ba, La, Ti, Ta, Zr, Nb, Mn, V, Co, Fe, Cd, Cr, Ga, In, or a combination thereof, at the anode, wherein the anode contains the multivalent metal or its alloy as an anode active material and the cathode comprises a cathode active layer of a graphite or carbon material having expanded inter-graphene planar spaces with an inter-planar spacing d002 from 0.43 nm to 2.0 nm as measured by X-ray diffraction. Such a metal-ion battery delivers a high energy density, high power density, and long cycle life.

Abstract: A printable lithium composition is provided. The printable lithium composition includes lithium metal powder; a polymer binder, wherein the polymer binder is compatible with the lithium powder; and a rheology modifier, wherein the rheology modifier is compatible with the lithium powder and the polymer binder. The printable lithium composition may further include a solvent compatible with the lithium powder and with the polymer binder.

Abstract: A thin-film lithium ion battery includes a negative electrode layer, a positive electrode layer, an electrolyte layer disposed between the positive and negative electrode layers, and a lithium layer with lithium pillars extending therefrom formed in the negative electrode layer adjoining the electrolyte layer.

Abstract: An improved rechargeable battery may utilize materials that are entirely solid-state. The battery may utilize at least one organic active material for an electrode. The battery may utilize a cathode that comprises quinone(s). An electrolyte of the battery may be an ion-conducting inorganic compound. An anode of the battery may comprise an alkali metal. Further, a carbonyl group of the quinone(s) of the cathode may be reduced into a phenolate and coordinated to an alkali metal ion during discharge and vice versa during charging.

Abstract: The present invention provides a negative electrode for a lithium metal battery and a lithium metal battery comprising the same, the negative electrode comprising: a first negative electrode including a lithium metal negative electrode; and a second negative electrode which is disposed on the first negative electrode and includes a coating layer including a carbon-based material. By using the negative electrode for a lithium metal battery, a lithium metal battery can have an improved charge and discharge efficiency and life time.

Abstract: Representative embodiments provide a liquid or gel separator utilized to separate and space apart first and second conductors or electrodes of an energy storage device, such as a battery or a supercapacitor. A representative liquid or gel separator comprises a plurality of particles, typically having a size (in any dimension) between about 0.5 to about 50 microns; a first, ionic liquid electrolyte; and a polymer. In another representative embodiment, the plurality of particles comprise diatoms, diatomaceous frustules, and/or diatomaceous fragments or remains. Another representative embodiment further comprises a second electrolyte different from the first electrolyte; the plurality of particles are comprised of silicate glass; the first and second electrolytes comprise zinc tetrafluoroborate salt in 1-ethyl-3-methylimidalzolium tetrafluoroborate ionic liquid; and the polymer comprises polyvinyl alcohol (“PVA”) or polyvinylidene fluoride (“PVFD”).

Abstract: Disclosed is a method for producing polymer-encapsulated Li2Sx (where 1?x?2) nanoparticles. The method comprises the step of forming a mixture of a polymer and sulfur. The method further comprises vulcanizing the mixture at a vulcanization temperature attained at a heating rate, in a vulcanization atmosphere, and electrochemically reducing a vulcanized product at a reduction potential. Also disclosed is a method for producing a battery component, the component comprising a cathode and a separator.

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector, an electrode mixture layer, and a self-assembled film. The first self-assembled film covers at least a part of a surface of the current collector. The first self-assembled film contains organic molecules. The electrode mixture layer disposed on at least a part of the first self-assembled film.

Abstract: The invention relates to methods for producing silicon particles by grinding silicon-containing solids, wherein one or more gases are used, which contain reactive gas at a partial pressure of ?0.3 bar, wherein reactive gases are selected from the group comprising oxygen, ozone, inorganic peroxides, carbon monoxide, carbon dioxide, ammonia, nitrogen oxides, hydrogen cyanide, hydrogen sulfide, sulfur dioxide, and volatile organic compounds.

Abstract: A field device of automation technology includes a field device housing and a field device electronics arranged in the field device housing. The field device also includes a first rechargeable battery arranged in the field device housing for energy supply of the field device electronics and a receiving unit with a receiving coil for receiving wirelessly inductively transmitted energy. The receiving unit is connected with the rechargeable battery so that the received, wirelessly inductively transmitted energy is storable, and is stored, in the rechargeable battery. The field device electronics is adapted in such a manner that energy supply occurs exclusively or at least partially from the first rechargeable battery and wherein the receiving unit and the receiving coil are adapted to receive wirelessly inductively transmitted energy as defined in a Qi standard 1.2.4 or a standard derived therefrom and to store such in the first rechargeable battery.

Abstract: A battery includes an electrode assembly having a positive electrode and a negative electrode. The positive electrode includes a positive electrode substrate, a positive electrode active material layer formed on the surface of the positive electrode substrate, and a positive tab section having a substrate-exposed portion in which the positive electrode active material layer is not formed on the surface. The positive electrode active material layer has a notch in the end of the positive electrode active material layer. The outer edge of the notch encloses an end of a boundary where the positive tab section and the positive electrode active material layer come into contact.

Abstract: A battery electrode composition is provided comprising core-shell composites. Each of the composites may comprise a core and a multi-functional shell.

Abstract: An electrode including an additive for forming pores with an average particle diameter of 1 ?m or greater, and a lithium secondary battery including the electrode. The porosity of the porous particles may be from 50% to 95%. The porosity of the electrode increases by including the additive for forming pores. As the porosity of the electrode increases by the additive for forming pores, and accordingly, effects of having excellent electrode reactivity and enhanced initial capacity are obtained even under high loading.

Abstract: Nanoporous carbon-based scaffolds or structures, and specifically carbon aerogels and their manufacture and use thereof. Embodiments include a sulfur-doped cathode material within a lithium-sulfur battery, where the cathode is collector-less and is formed of a binder-free, monolithic, polyimide-derived carbon aerogel. The carbon aerogel includes pores that surround elemental sulfur and accommodate expansion of the sulfur during conversion to lithium sulfide. The cathode and underlying carbon aerogel provide optimal properties for use within the lithium-sulfur battery.

Abstract: Provided is an alkali metal-sulfur cell comprising: (a) a quasi-solid cathode containing about 30% to about 95% by volume of a cathode active material (a sulfur-containing material), about 5% to about 40% by volume of a first electrolyte containing an alkali salt dissolved in a solvent and an ion-conducting polymer dissolved, dispersed in or impregnated by a solvent, and about 0.01% to about 30% by volume of a conductive additive wherein the conductive additive, containing conductive filaments, forms a 3D network of electron-conducting pathways such that the quasi-solid electrode has an electrical conductivity from about 10?6 S/cm to about 300 S/cm; (b) an anode; and (c) an ion-conducting membrane or porous separator disposed between the anode and the quasi-solid cathode; wherein the quasi-solid cathode has a thickness from 200 ?m to 100 cm and a cathode active material having an active material mass loading greater than 10 mg/cm2.

Abstract: A solid, ionically conductive, non-electrically conducting polymer material with a plurality of monomers and a plurality of charge transfer complexes, wherein each charge transfer complex is positioned on a monomer.

Abstract: A solid-state battery cell includes a cathode comprising a cathode glass fiber scaffold impregnated with cathode active material, an anode comprising an anode glass fiber scaffold impregnated with lithium metal or a lithium metal alloy, and a first electrolyte layer comprising an electrolyte glass fiber scaffold impregnated with a first solid-state electrolyte, the electrolyte layer positioned between the cathode and the anode and the electrolyte glass fiber scaffold extending throughout the first electrolyte layer.

Abstract: An organic expander for a lead storage battery, the organic expander containing lignin in which the methoxy group content relative to the solid content is 3 to 20 mass %, wherein the organic expander contains an organic acid in an amount of 0.0001 to 5 mass % relative to the solid content of the organic expander. It is possible to improve charge acceptance while maintaining the discharge characteristics of the lead storage battery.

Abstract: A solid, ionically conductive, polymer material with a crystallinity greater than 30%; a glassy state; and both at least one cationic and anionic diffusing ion, wherein each diffusing ion is mobile in the glassy state.

Abstract: There is provided a positive electrode material for a lithium-sulfur battery, including a sulfur-rich polymer and graphene, wherein an internal structure of the sulfur-rich polymer is an interpenetrating network structure; the graphene is doped in the sulfur-rich polymer; a particle size of the sulfur-rich polymer is 100-300 meshes; and the number of flake layers of the graphene is 2-10. A preparation method includes: crushing a prepared sulfur-rich polymer into powder, adding a solvent to obtain a solution, performing sufficient stirring processing; performing ultrasonic dispersion on graphene in a solvent to generate a suspension; and mixing the two solutions, then continuing to perform ultrasonic dispersion and stirring, and finally removing the solvent and drying a product to obtain the positive electrode material for a lithium-sulfur battery.

Abstract: The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.

Abstract: The present invention relates to a silicon-based particle-polymer composite, which includes silicon-based particles; and a polymer coating layer formed on the silicon-based particles, in which the polymer coating layer includes metal-substituted poly(acrylic acid) in which hydrogen atoms in carboxyl groups of the poly(acrylic acid) chain are substituted with one or more selected from the group consisting of K, Na and Li.

Abstract: A lithium ion secondary battery includes at least a positive electrode, a separator, a first intermediate layer, a second intermediate layer, and a negative electrode. The separator is arranged between the positive electrode and the negative electrode. The first intermediate layer is arranged between the separator and the negative electrode. The second intermediate layer is arranged between the first intermediate layer and the negative electrode. The first intermediate layer and the second intermediate layer are each a porous layer. The first intermediate layer contains at least a metal organic framework. The second intermediate layer is electrically insulating.

Abstract: Provided is an alkali metal-sulfur battery, comprising: (a) an anode; (b) a cathode having (i) a cathode active material slurry comprising a cathode active material dispersed in an electrolyte and (ii) a conductive porous structure acting as a 3D cathode current collector having at least 70% by volume of pores and wherein cathode active material slurry is disposed in pores of the conductive porous structure, wherein the cathode active material is selected from sulfur, lithium polysulfide, sodium polysulfide, sulfur-polymer composite, sulfur-carbon composite, sulfur-graphene composite, or a combination thereof; and (c) a separator disposed between the anode and the cathode; wherein the cathode thickness-to-cathode current collector thickness ratio is from 0.8/1 to 1/0.8, and/or the cathode active material constitutes an electrode active material loading greater than 15 mg/cm2, and the 3D porous cathode current collector has a thickness no less than 200 ?m (preferably thicker than 500 ?m).

Abstract: The invention features a rechargeable cathode and a battery comprising the cathode. The cathode includes a solid, ionically conducting polymer material and electroactive sulfur. The battery contains a lithium anode; the cathode; and an electrolyte; wherein at least one of anode, the cathode and the electrolyte, include the solid, ionically conducting polymer material.

Abstract: A first silicon oxide material and a second silicon oxide material are prepared. A dispersion is prepared by dispersing the first silicon oxide material in an aqueous carboxymethylcellulose solution. A negative electrode composite material slurry is prepared by dispersing the second silicon oxide material and a binder in the dispersion. A negative electrode is produced by applying the negative electrode composite material slurry to a surface of a negative electrode current collector and then performing drying. The binder includes no carboxymethylcellulose. The first silicon oxide material has not been pre-doped with lithium. The second silicon oxide material has been pre-doped with lithium.

Abstract: A device for extending the life of a battery, including an electrode having a metal portion, wherein the metal portion is selected from the group including lithium, calcium, magnesium, sodium, potassium and combinations thereof, an electrolyte permeable membrane, and a metal dendrite seeding material disposed between the electrode and the membrane. The electrode, the membrane and the metal dendrite seeding material are positioned in an electrolyte matrix. At least one dendrite extends from the electrode toward the electrolyte permeable membrane combines with at least one dendrite extending from the dendrite seeding material.

Abstract: A method for manufacturing an electrochemical device includes the following steps: a step of preparing a positive electrode, the positive electrode including a first current collector and a positive electrode layer containing a conductive polymer; a step of preparing a negative electrode, the negative electrode including a second current collector and a negative electrode layer; and a step of sealing the positive electrode, the negative electrode, and an electrolytic solution in an exterior body. The step of preparing the positive electrode includes a step of holding the positive electrode in depressurized atmosphere and then introducing gas containing CO2 as a primary component into the depressurized atmosphere.

Abstract: The object of the present invention is to provide an electric power storage device using an aqueous electrolytic solution that is safe even if the device is damaged while being used and the electrolytic solution leaks out from the battery housing. Specifically, the object of the present invention is to provide a secondary battery having both excellent safety and excellent cycle characteristics. The present invention is an aqueous secondary battery, wherein at least either of the positive electrode or the negative electrode comprises a compound (I) having a naphthalenediimide structure or a perylenediimide structure as an active material.

Abstract: The present invention provides a bio-electrode composition including a polymer compound having both an ionic repeating unit A and a (meth)acrylate repeating unit B, wherein the ionic repeating unit A is a repeating unit selected from the group consisting of sodium salt, potassium salt, and ammonium salt having either or both partial structures shown by the following general formulae (1-1) and (1-2), and the (meth)acrylate repeating unit B is a repeating unit shown by the following general formula (2). This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which can be manufactured at low cost and does not cause large lowering of the electric conductivity even when it is wetted with water or dried.

Abstract: The disclosed technology generally relates to energy storage devices, and more particularly to energy storage devices comprising frustules. According to an aspect, a supercapacitor comprises a pair of electrodes and an electrolyte, wherein at least one of the electrodes comprises a plurality of frustules having formed thereon a surface active material. The surface active material can include nanostructures. The surface active material can include one or more of a zinc oxide, a manganese oxide and a carbon nanotube.

Abstract: A method of eluting biomolecules, such as nucleic acids from a biological sample by electroelution is provided. An example of a method includes various steps, such as loading the biological sample to a device comprising a housing, at least two conductive redox polymer electrodes operationally coupled to the housing and a biomolecule impermeable layer disposed on at least one of the electrodes. The loading of sample is followed by initiating an electrical connection to generate an electric field strength sufficient to elute biomolecules from the biological sample; and eluting the biomolecules from the biological sample.

Abstract: Systems and methods for water based phenolic binders for silicon-dominant anodes may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and a pyrolyzed water-based phenolic binder. The water-based phenolic binder may include phenolic/resol type polymers crosslinked with poly(methyl vinyl ether-alt-maleic anhydride), poly(methyl vinyl ether-alt-maleic acid), and/or Poly(acrylamide-co-diallyldimethylammonium chloride) (PDADAM). The electrode coating layer may further include conductive additives. The current collector may comprise one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer. The electrode coating layer may include more than 70% silicon. The electrode may be in electrical and physical contact with an electrolyte, where the electrolyte includes a liquid, solid, or gel. The battery electrode may be in a lithium ion battery.

Abstract: A composition for forming a porous insulating layer according to the present disclosure includes a solvent including an organic solvent, and an insulating inorganic particle. According to the present disclosure, a porous insulating layer prepared using the composition is positioned on an active material layer being on a main surface of a current collector, wherein the active material layer includes at least an active material capable of electrochemically intercalating and deintercalating lithium ions and an active material layer binder. A distance between Hansen solubility parameters of the active material layer binder and the organic solvent is greater than or equal to about 8.0 (MPa)1/2.

Abstract: A lithium secondary battery includes an electrode group and a nonaqueous electrolyte having lithium ion conductivity. A negative electrode includes a negative electrode current collector. The negative electrode current collector has a first surface facing an outward direction of winding of the electrode group and a second surface facing an inward direction of the winding of the electrode group. Lithium metal is deposited on the first surface and the second surface by charge. The negative electrode further includes first protrusions protruding from the first surface and second protrusions protruding from the second surface. A ratio A1X/A1 is less than a ratio A2X/A2. A1X is a sum of projected areas of the first protrusions on the first surface. A1 is an area of the first surface. A2X is a sum of projected areas of the second protrusions on the second surface. A2 is an area of the second surface.