The present invention relates to a primary cell, comprising an alkali metal as the active electrode material, in particular as the active anode material, and an electrolyte comprising a boron compound, wherein the boron compound is compound according to formula (1), (2), (3), (4), (7) or (8):

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A negative electrode active material and a method for preparing a negative electrode active material, comprising preparing a silicon-based compound including SiO.sub.x, wherein 0.5<x<1.3, and forming a crystalline carbon coating layer on the silicon-based compound through a chemical vapor deposition method using an organometallic compound as a source, wherein the organometallic compound is at least any one selected from the group consisting of aluminum acetylacetonate, aluminum ethoxide, aluminum phenoxide, aluminum acetate, aluminum tributoxide, and a combination thereof.

The method for producing an electrode disclosed here is a method for producing an electrode having an electrode current collector and an electrode active substance layer, and includes the following steps: a step for preparing a powdery electrode material containing at least an electrode active substance and a binder; a step for passing the electrode material between a pair of opposing rollers so as to form the electrode active substance layer comprising the electrode material; a step for pressing the electrode active substance layer, wherein the pressing comprises pressing at a linear pressure of 1 ton/cm or more; a step for coating an adhesive liquid containing at least an adhesive resin on the electrode current collector; and a step for supplying the electrode active substance layer to the current collector on which the adhesive liquid has been coated so as to construct an electrode.

The present disclosure provides a solid-state battery including at least one current collector that is in communication with one or more switches configured to move between open and closed positions, where the open position corresponds to a first operational state of the solid-state battery and the closed position corresponds to a second operational state of the solid-state battery; one or more electrodes disposed adjacent to the one or more current collectors; and one or more electrothermal material foils including a resistor material that is in electrical communication with that at least one current collector, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode, and in the second operational state electrons may flow through the current collector during cycling of the solid-state battery so as to initiate a non-heating mode.

A method for the fabrication of an electroless-metal-plated sulfur nanocomposite, an electroless-metal-plated sulfur cathode which is made from the nanocomposite, and a battery that uses the cathode, where the method includes chemically plating a conductive metal nanoshell onto the surface of the insulating sulfur powder to improve the conductivity of the sulfur cathode material, where through enhancing the electrochemical reaction kinetics with metal catalysis capabilities, and performing physical and chemical adsorption of liquid polysulfides with metal activity, the electroless-metal-plated sulfur nanocomposite enables the battery to exhibit high electrochemical utilization and stable cyclability, such that the nanocomposite can achieve a high sulfur content and high metal content, and the cathode demonstrates a high sulfur loading with a low electrolyte-to-sulfur ratio, the lithium-sulfur battery with the cathode exhibiting a high discharge capacity along with high energy density, and maintaining stable and high reversible capacity after 200 cycles within a wide range of cycling rates.

The present application relates to a lithium ion secondary battery comprising a cathode, an anode, a separator and an electrolyte; wherein the cathode comprises a positive current collector and a positive material layer, wherein the positive material layer comprises a positive active material with a formula Li.sub.xNi.sub.aCo.sub.bM.sub.cO.sub.2, M is at least one selected from Mn and Al, 0.95x1.2, 0<a<1, 0<b<1, 0<c<1 and a+b+c=1; wherein the anode comprises a negative current collector and a negative material layer, wherein the negative material layer comprises graphite having a graphitization degree of 92% to 98% and an average particle size D50 of 6 μm to 18 μm as negative active material. The lithium ion secondary battery has long cycle life and high energy density.

The present application relates to a positive electrode and an electrochemical apparatus and an electronic apparatus containing the same. The positive electrode includes a conductive agent, where the conductive agent includes a non-carbon material. The present application provides a positive electrode that includes a conductive agent with high voltage and oxidization resistance, which can effectively improve high voltage cycle performance of the electrochemical apparatus.

An electrode and a lithium secondary battery including the same. By preparing an electrode including an electrode active layer formed using a structure capable of supporting an electrode active material, safety and charge and discharge properties of a battery are improved due to morphological characteristics of the electrode active material being supported inside the structure.

A positive electrode includes at least a positive electrode current collector, a conductive material, and a positive electrode active material. The positive electrode active material is disposed on a surface of the positive electrode current collector. The positive electrode current collector includes an aluminum foil and an aluminum oxide hydrate film. The aluminum oxide hydrate film covers a surface of the aluminum foil. The aluminum oxide hydrate film has a thickness not smaller than 10 nm and not greater than 500 nm. The aluminum oxide hydrate film has a porosity not lower than 10% and not higher than 50%. At least part of the conductive material is disposed within pores in the aluminum oxide hydrate film.

There is provided an all-solid-state lithium battery including: a positive-electrode plate composed of a lithium complex oxide sintered body having a layered rock-salt structure; a solid electrolyte layer composed of a lithium-ion-conductive antiperovskite material; a negative-electrode plate containing Ti and permitting intercalation and deintercalation of lithium ions at 0.4 (vs. Li/Li.sup.+) V or more; a positive-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the positive-electrode plate; a negative-electrode current collecting layer provided on a face, remote from the solid electrolyte layer, of the negative-electrode plate; a positive-electrode covering metal membrane provided at an interface between the positive-electrode plate and the solid electrolyte layer; and a negative-electrode covering metal membrane provided at an interface between the negative-electrode plate and the solid electrolyte layer.