Abstract: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with “n” polycyclic nano sheets, wherein “n” is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.

Abstract: A lithium-metal-oxide positive electrode having a layered or spinel structure for a non-aqueous lithium electrochemical cell and battery is disclosed comprising electrode particles that are protected at the surface from undesirable effects, such as electrolyte oxidation, oxygen loss or dissolution by one or more lithium-metal-polyanionic compounds, such as a lithium-metal-phosphate or a lithium-metal-silicate material that can act as a solid electrolyte at or above the operating potential of the lithium-metal-oxide electrode. The surface protection significantly enhances the surface stability, rate capability and cycling stability of the lithium-metal-oxide electrodes, particularly when charged to high potentials.

Abstract: Several embodiments related to batteries having electrodes with nanostructures, compositions of such nanostructures, and associated methods of making such electrodes are disclosed herein. In one embodiment, a method for producing an anode suitable for a lithium-ion battery comprising preparing a surface of a substrate material and forming a plurality of conductive nanostructures on the surface of the substrate material via electrodeposition without using a template.

Abstract: This invention relates to a negative electrode material for lithium-ion batteries comprising silicon and having a chemically treated or coated surface influencing the zeta potential of the surface. The active material consists of particles or particles and wires comprising a core (11) comprising silicon, wherein the particles have a positive zeta potential in an interval between pH 3.5 and 9.5, and preferably between pH 4 and 9.5. The core is either chemically treated with an amino-functional metal oxide, or the core is at least partly covered with OySiHx groups, with 1<x<3, 1<y<3, and x>y, or is covered by adsorbed inorganic nanoparticles or cationic multivalent metal ions or oxides.

Abstract: A rechargeable lithium-sulfur cell comprising an anode, a separator and/or electrolyte, a sulfur cathode, an optional anode current collector, and an optional cathode current collector, wherein the cathode comprises (a) exfoliated graphite worms that are interconnected to form a porous, conductive graphite flake network comprising pores having a size smaller than 100 nm; and (b) nano-scaled powder or coating of sulfur, sulfur compound, or lithium polysulfide disposed in the pores or coated on graphite flake surfaces wherein the powder or coating has a dimension less than 100 nm. The exfoliated graphite worm amount is in the range of 1% to 90% by weight and the amount of powder or coating is in the range of 99% to 10% by weight based on the total weight of exfoliated graphite worms and sulfur (sulfur compound or lithium polysulfide) combined. The cell exhibits an exceptionally high specific energy and a long cycle life.

Abstract: A system and method for stabilizing electrodes against dissolution and/or hydrolysis including use of cosolvents in liquid electrolyte batteries for three purposes: the extension of the calendar and cycle life time of electrodes that are partially soluble in liquid electrolytes, the purpose of limiting the rate of electrolysis of water into hydrogen and oxygen as a side reaction during battery operation, and for the purpose of cost reduction.

Abstract: An anode, a lithium battery including the anode, and a method of manufacturing the anode. The anode includes: an anode active material including a metal alloyable with lithium; and a metal-carbon composite conducting agent having a density of 3.0 grams per cubic centimeter or greater.

Abstract: A negative electrode active material for an electric device according to the present invention includes crystalline metal having a structure in which a size in a perpendicular direction to a crystal slip plane is 500 nm or less. More preferably, the size in the perpendicular direction to the crystal slip plane is controlled to become 100 nm or less. As described above, a thickness in an orientation of the slip plane is controlled to become sufficiently small, and accordingly, micronization of the crystalline metal is suppressed even if breakage occurs from the slip plane taken as a starting point. Hence, a deterioration of a cycle lifetime can be prevented by applying the negative electrode active material for an electric device, which is as described above, or a negative electrode using the same, to an electric device, for example, such as a lithium ion secondary battery.

Abstract: A negative electrode active material for an electric device. The negative electrode active material including an alloy having a composition formula SixTiyZnz, where (1) x+y+z=100, (2) 38?x<100, (3) 0<y<62, and (4) 0<z<62 in terms of mass percent.

Abstract: A process of electroless plating a tin or tin-alloy active material onto a metal substrate for the negative electrode of a rechargeable lithium battery comprising steps of (1) immersing the metal substrate in an aqueous plating solution containing metal ions to be plated, (2) plating tin or tin-alloy active material onto the metal substrate by contacting the metal substrate with a reducing metal by swiping one on the other, and (3) removing the plated metal substrate from the plating bath and rinsing with deionized water. A rechargeable lithium battery using tin or tin-alloy as the anode active material.

Abstract: A negative electrode active material for an electric device, including an alloy having a composition formula SixZnyAlz, where x++y=100 , 26?x?47, 18?y?44, and 22?z?46 are satisfied.

Abstract: Disclosed are an anode active material for lithium secondary batteries and a method for manufacturing same, the anode active material comprising: a core part including a carbon-silicon complex and having a cavity therein; and a coated layer which is formed on the surface of the core part and includes a phosphor-based alloy.

Abstract: Disclosed is a high-capacity electrochemical energy storage device in which a conversion reaction proceeds as the oxidation-reduction reaction, and the separation (hysteresis) between the electrode potentials for oxidation and reduction is small. The electrochemical energy storage device includes a first electrode including a first active material, a second electrode including a second active material, and a non-aqueous electrolyte interposed between the first and second electrodes. At least one of the first and second active materials is a metal salt having a polyatomic anion and a metal ion, and the metal salt is capable of oxidation-reduction reaction involving reversible release and acceptance of the polyatomic anion.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator separating the positive electrode and the negative electrode, and an electrolyte. The negative electrode active material of the negative electrode includes a material that is capable of reversibly intercalating and deintercalating lithium ions and a metallic material capable of alloying with lithium. The electrolyte includes a chemical compound containing a nitrile (—CN) radical.

Abstract: A negative active material includes a conductive unit bound in island-like form to silicon-based nanowires on a carbonaceous base. Such negative active material may improve the electrical conductivity of the silicon-based nanowires, and suppress separation of the silicon-based nanowires caused from volume expansion, and thus may improve lifetime characteristics of a lithium battery.

Abstract: A lithium-metal-oxide positive electrode having a layered or spinel structure for a non-aqueous lithium electrochemical cell and battery is disclosed comprising electrode particles that are protected at the surface from undesirable effects, such as electrolyte oxidation, oxygen loss or dissolution by one or more lithium-metal-polyanionic compounds, such as a lithium-metal-phosphate or a lithium-metal-silicate material that can act as a solid electrolyte at or above the operating potential of the lithium-metal-oxide electrode. The surface protection significantly enhances the surface stability, rate capability and cycling stability of the lithium-metal-oxide electrodes, particularly when charged to high potentials.

Abstract: A cathode material for a lithium ion secondary battery includes an oxide represented by a composition formula Li2-xMIIyM(Si,MB)O4, wherein MII represents a divalent element; M represents at least one element selected from the group consisting of Fe, Mn, Co and Ni; and MB represents, as an optional component, an element substituted for Si to compensate for a difference between an electric charge of [Li2]2+ and an electric change of [Li2-xMIIy]n+ as needed. In the composition formula representing the oxide, x and y are ?0.25<x?0.25 and 0<y?0.25.

Abstract: The specification relates to a composite particle for storing lithium. The composite particle is used in an electrochemical cell. The composite particle includes a metal oxide on the surface of the composite particle, a major dimension that is approximately less than or equal to 40 microns and a formula of MM?Z, wherein M is from the group of Si and Sn, M? is from a group of Mn, Mg, Al, Mo, Bronze, Be, Ti, Cu, Ce, Li, Fe, Ni, Zn, Co, Zr, K, and Na, and Z is from the group of O, Cl, P, C, S, H, and F.

Abstract: A negative electrode active material for a zinc anode alkaline electrochemical cell includes (i) particles, comprising bismuth, and (ii) powder, comprising zinc. The particles have an average particle size of at most 135 nm.

Abstract: A system and method producing electrodes in an aqueous electrolyte battery that maximizes energy storage, reduces electrochemical decomposition of the electrolyte, and uses Prussian Blue analogue materials for both electrodes, with an anode electrode including an electrochemically active hexacyanometalate group having two possible redox reactions of different potentials. These potentials may be tuned by substituting different electrochemically inactive components.

Abstract: A composite anode active material, an anode including the composite anode active material, a lithium battery including the anode, and a method of preparing the composite anode active material, the composite anode active material including a core including a ternary alloy, the ternary alloy being capable of intercalating and deintercalating lithium; and a carbonaceous coating layer on the core.

Abstract: The present disclosure provides an embodiment of an integrated structure that includes a first electrode of a first conductive material embedded in a first semiconductor substrate; a second electrode of a second conductive material embedded in a second semiconductor substrate; and a electrolyte disposed between the first and second electrodes. The first and second semiconductor substrates are bonded together through bonding pads such that the first and second electrodes are enclosed between the first and second semiconductor substrates. The second conductive material is different from the first conductive material.

Abstract: Embodiments of the present disclosure pertain to methods of preparing porous silicon particulates by: (a) electrochemically etching a silicon substrate, where electrochemical etching comprises exposure of the silicon substrate to an electric current density, and where electrochemical etching produces a porous silicon film over the silicon substrate; (b) separating the porous silicon film from the silicon substrate, where the separating comprises a gradual increase of the electric current density in sequential increments; (c) repeating steps (a) and (b) a plurality of times; (d) electrochemically etching the silicon substrate in accordance with step (a) to produce a porous silicon film over the silicon substrate; (e) chemically etching the porous silicon film and the silicon substrate; and (f) splitting the porous silicon film and the silicon substrate to form porous silicon particulates.

Abstract: An alkaline battery of this invention includes: a negative electrode including a negative electrode mixture that contains a zinc alloy as an active material, the zinc alloy containing at least aluminum; an alkaline electrolyte; and a positive electrode. The alkaline electrolyte includes an aqueous KOH solution and LiOH and an aluminum compound that are dissolved in the aqueous KOH solution. The alkaline battery has excellent high-rate discharge characteristics.

Abstract: A method is provided for fabricating a battery using an anode preloaded with consumable metals. The method forms an ion-permeable membrane immersed in an electrolyte. A preloaded anode is immersed in the electrolyte, comprising MeaX, where X is a material such as carbon, metal capable of being alloyed with Me, intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. Me is a metal such as alkali metals, alkaline earth metals, and combinations of the above-listed metals. A cathode is also immersed in the electrolyte and separated from the preloaded anode by the ion-permeable membrane. The cathode comprises M1YM2Z(CN)N.MH2O. After a plurality of initial charge and discharge operations are preformed, an anode is formed comprising MebX overlying the current collector in a battery discharge state, where 0?b<a.

Abstract: In an alkaline secondary battery including a gelled negative electrode containing zinc alloy powder, an aspect ratio of a particle of the zinc alloy powder is within a range of 2.0-2.4, and the zinc alloy contains 150-350 ppm of bismuth, and 600-1500 ppm of indium.

Abstract: A method is presented for fabricating an anode preloaded with consumable metals. The method provides a material (X), which may be one of the following materials: carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. The method loads the metal (Me) into the material (X). Typically, Me is an alkali metal, alkaline earth metal, or a combination of the two. As a result, the method forms a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N·MH2O cathode, where M1 and M2 are transition metals. The method loads the metal (Me) into the material (X) using physical (mechanical) mixing, a chemical reaction, or an electrochemical reaction. Also provided is preloaded anode, preloaded with consumable metals.

Abstract: Ink is manufactured by mixing unoxidized metallic particles to a binder. The ink is printed on an object (502) and hardened for forming a conductor. The process is performed in an inert atmosphere or in vacuum for maintaining the electrical conductivity of the conductor (500).

Abstract: A method is provided for fabricating a cyanometallate cathode battery. The method provides a cathode of AXM1YM2Z(CN)N.MH2O, where “A” is selected from a first group of metals, and where M1 and M2 are transition metals. The method provides an anode and a metal ion-permeable membrane separating the anode from the cathode. A third electrode is also provided including “B” metal ions selected from the first group of metals. Typically, the first group of metals includes alkali and alkaline metals. The method intercalates “B” metal ions from the third electrode to the anode, the cathode, or both the anode and cathode to form a completely fabricated battery. In one aspect, a solid electrolyte interface (SEI) layer including the “B” metal ions overlies a surface of the anode, the cathode, or both the anode and cathode. A cyanometallate cathode battery is also provided.

Abstract: Provided is an electrode powder and an electrode plate for a lithium ion battery. The electrode powder includes a core and a nano-coating layer. The core contains a lithium compound. The nano-coating layer is disposed on a surface of the core and consists of a plurality of nanosheets.

Abstract: A negative electrode for rechargeable lithium batteries includes a current collector, a porous active material layer having a metal-based active material disposed on the current collector, and a high-strength binder layer on the porous active material layer. The high-strength binder layer has a strength ranging from 5 to 70 MPa. The negative active material for a rechargeable lithium battery according to the present invention can improve cycle-life characteristics by suppressing volume expansion and reactions of an electrolyte at the electrode surface.

Abstract: The present disclosure generally relates to an alkaline electrochemical cell comprising an additive for improved discharge performance. The additive is a finely dispersed superabsorbent material comprising particles having a substantially uniform shape and a small particle size relative to typical materials used in alkaline cells. The superabsorbent material results in enhanced discharge performance of the alkaline cell by increasing access of zinc to the electrolyte.

Abstract: Provided is a cylindrical alkaline battery in which the packing density Dc of the manganese dioxide in the positive electrode is 2.8 to 3.0 g/cm3 and the packing density Da of zinc or a zinc alloy in the negative electrode is 2.0 to 2.3 g/cm3. The packing density Dc of the manganese dioxide, the packing density Da of the zinc or zinc alloy, the thickness Tc of the positive electrode in a radial direction, and the thickness Ta of the negative electrode in a radial direction satisfy one of the following relational formulas (1) to (3): ?1.975×(Tc/Ta)+2.745<Dc/Da<?1.690×(Tc/Ta)+2.734??(1) ?11.652×(Tc/Ta)2+14.470×(Tc/Ta)?3.095<Dc/Da<11.652×(Tc/Ta)2?18.420×(Tc/Ta)+8.585??(2) ?8.895×(Tc/Ta)2+12.864×(Tc/Ta)?3.258<Dc/Da<8.895×(Tc/Ta)2?16.244×(Tc/Ta)+8.726??(3).

Abstract: An electrode material for a secondary battery includes crystal primary particles of an electrode active material which releases or absorbs cations of a monovalent or divalent metal when subjected to electrochemical oxidation or reduction and which has a crystal lattice in which the cations can move only in a one-dimensional movable direction during the process of oxidation or reduction. The electrode material also includes an ion-conductive substance and conductive carbon which coexist on the surface of the primary particles, in which the ion-conductive substance has a property which allows two or three-dimensional movement of the cations, and the cations are movable via a layer in which the ion-conductive substance and the conductive carbon coexist.

Abstract: To provide a cathode active material for a lithium ion secondary battery, and its production process. A lithium-containing composite oxide containing a transition metal element and a composition (1) are contacted to obtain particles (I) having a compound containing a metal element (M) attached, which are mixed with a compound which generates HF by heating, and the mixture is heated to obtain particles (III) having a covering layer (II) containing the metal element (M) and fluorine element formed on the surface of the lithium-containing composite oxide. Composition (1): a composition having a compound containing no Li element and containing at least one metal element (M) selected from Mg, Ca, Sr, Ba, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Pb, Cu, Zn, Al, In, Sn, Sb, Bi, La, Ce, Pr, Nd, Gd, Dy, Er and Yb dissolved or dispersed in a solvent.

Abstract: To provide a process for producing a cathode active material for a lithium ion secondary battery, a cathode for a lithium ion secondary battery, and a lithium ion secondary battery. A production process which comprises contacting a lithium-containing composite oxide containing Li element and a transition metal element with a composition (1) {an aqueous solution containing cation M having at least one metal element (m)} and a composition (2) {an aqueous solution containing anion N having at least one element (n) selected from the group consisting of S, P, F and B, forming a hardly soluble salt when reacted with the cation M}, wherein the total amount A (mL/100 g) of the composition (1) and the composition (2) contacted per 100 g of the lithium-containing composite oxide is in a ratio of 0.1<A/B<5 based on the oil absorption B (mL/100 g) of the lithium-containing composite oxide.

Abstract: Alkaline electrochemical cells having extended service life and acceptable gassing and corrosion properties are disclosed. An amphoteric surfactant can be incorporated into the gelled anode mixture of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant or a sulfonic acid type organic surfactant or both. Zinc particles having a defined distribution of particle sizes can also be incorporated into a zinc anode. The electrolyte included, in the anode mixture can have a reduced hydroxide concentration.

Abstract: A composite anode active material, an anode including the composite anode active material, a lithium battery including the anode, and a method of preparing the composite anode active material. The composite anode active material includes: a shell including a hollow carbon fiber; and a core disposed in a hollow of the hollow carbon fiber, wherein the core includes a first metal nanostructure and a conducting agent.

Abstract: The Invention provides a zinc-air cell comprising at least one zinc-incorporating structure, at least one oxygen evolving structure and at least one air electrode; wherein said zinc-air cell comprises a first pair of electrodes for the charging of said air cell, said electrode pair comprising said at least one zinc-incorporating structure and said at least one oxygen evolving structure; and wherein said zinc-air cell comprises a second pair of electrodes for the discharging of said air cell, said electrode pair comprising said at least one zinc-incorporating structure and said at least one air electrode.

Abstract: A biodegradable battery is provided. The battery includes an anode comprising a material including an inner surface and an outer surface, wherein electrochemical oxidation of the anode material results in the formation of a reaction product that is substantially non-toxic and a cathode comprising a material including an inner surface and an outer surface, the inner surface of the cathode being in direct physical contact with the inner surface of the anode, wherein electrochemical reduction of the cathode material results in the formation of a reaction product that is substantially non-toxic, and wherein the cathode material presents a larger standard reduction potential than the anode material.

Abstract: A composite cathode active material, a cathode including the same, a lithium battery including the cathode, and preparation method thereof are disclosed. The composite cathode active material includes: a core capable of intercalating and deintercalating lithium; and a crystalline coating layer disposed on at least part of a surface of the core, wherein the coating layer include a metal oxide.

Abstract: Silver positive electrode for alkali secondary batteries having an enhanced cycling capability, and consequently a longer lifetime in cycling of the storage batteries incorporating it, by optimizing, in recharge mode, the conditions for electrochemically reducing the oxidized silver species. The silver electrode according to the invention is of the plasticized type, and a high-porosity collector, such as a woven fabric, a felt or a reticulated cellular metal foam, is used. The active compound introduced into the collector is prepared in paste form, in which the active material consists of metallic silver particles and/or silver monoxide particles, and may advantageously include a metal oxide acting as pore-forming and wetting agent for the electrode. Such an electrode is particularly intended for mounting in silver-zinc storage batteries operating in open mode or sealed mode.

Abstract: The present disclosure describes a rechargeable zinc ion battery, in which anodic zinc will be electrochemically dissolved as Zn2+ ions, diffuses to the cathodic electrode/electrolyte interface through the electrolyte, and zinc ions are subsequently intercalated into manganese dioxide during discharging. In charging, above-mentioned process will be reversed. The rechargeable zinc ion battery comprises a cathode formed from a compressed mixture of alpha manganese dioxide particles, electrically conductive particles and one or more binder(s); a zinc anode separated from cathode; an aqueous electrolyte contains zinc ions in which the pH value may be controlled between 4 and 7.

Abstract: Lithium ion battery positive electrode material are described that comprise an active composition comprising lithium metal oxide coated with an inorganic coating composition wherein the coating composition comprises a metal chloride, metal bromide, metal iodide, or combinations thereof. Desirable performance is observed for these coated materials. In particular, the non-fluoride metal halide coatings are useful for stabilizing lithium rich metal oxides.

Abstract: An anode includes a plurality of metal fibers with a three-dimensional (3D) network structure, and a silicon-containing layer having a thickness of about 0.3 ?m or less formed on a surface of and inside the 3D network structure of the plurality of metal fibers.

Abstract: The present invention relates to an anode active material for a lithium secondary battery, comprising a carbon material, and a coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 ?m or less. The inventive anode active material having a Sn-based domains coating layer on the surface of a carbon material can surprisingly prevent stress due to volume expansion which generates by an alloy of Sn and lithium. Also, the inventive method for preparing an anode active material can easily control the thickness of the coating layer.

Abstract: An anode active material for a lithium secondary battery having a high capacity and a high efficiency of charge discharge characteristics. The anode active material includes a silicon mono-phase and an alloy phase formed of silicon with a metal element at least one selected from the group consisting of Ti, Ni, Cu, Fe, Mn, Al, Cr, Co, and Zn. The anode active material is a powder in which the silicon mono-phase is uniformly distributed in a matrix of the alloy phase, has particle size distribution defined as D0.1 and D0.9, and the value of D0.1-D0.9 is in a range from about 3 ?m to about 15 ?m.

Abstract: A lithium ion secondary battery includes: a positive electrode; a negative electrode; and an electrolytic solution, at least one of the positive electrode and the negative electrode being capable of storing and releasing lithium ions, and containing an active material that satisfies predetermined conditions.

Abstract: Provided are examples of electrochemically active electrode materials, electrodes using such materials, and methods of manufacturing such electrodes. Electrochemically active electrode materials may include a high surface area template containing a metal silicide and a layer of high capacity active material deposited over the template. The template may serve as a mechanical support for the active material and/or an electrical conductor between the active material and, for example, a substrate. Due to the high surface area of the template, even a thin layer of the active material can provide sufficient active material loading and corresponding battery capacity. As such, a thickness of the layer may be maintained below the fracture threshold of the active material used and preserve its structural integrity during battery cycling.

Abstract: Energy storage devices having hybrid anodes can address at least the problems of active material consumption and anode passivation that can be characteristic of traditional batteries. The energy storage devices each have a cathode separated from the hybrid anode by a separator. The hybrid anode includes a carbon electrode connected to a metal electrode, thereby resulting in an equipotential between the carbon and metal electrodes.