Abstract: A sulfide solid electrolyte material according to an embodiment of the present disclosure contains Li, P, and Bi. An electrochemical device according to an embodiment of the present disclosure includes a sulfide solid electrolyte material containing Li, P, and Bi.

Abstract: An assembled battery includes: a case in which plural electric cells are accommodated; and an abutment member which abuts against the electric cells accommodated in the case to position the electric cells with respect to the case. The abutment member includes a first projection inserted into a first gap defined by the case and the mutually adjacent electric cells to align the abutment member.

Abstract: A method and apparatus for controlling operation of a redox flow battery. The method of controlling operation of a redox flow battery includes obtaining a diffusivity of anolyte ions with respect to a separator, obtaining a diffusivity of catholyte ions with respect to the separator, determining electrolyte diffusivities depending upon a state of charge value of the redox flow battery based on the diffusivity of the anolyte ions and the diffusivity of the catholyte ions, determining a minimum state of charge value and a maximum state of charge value of the redox flow battery based on the electrolyte diffusivities, and setting operating conditions of the redox flow battery based on the minimum state of charge value and the maximum state of charge value. The method and apparatus for controlling operation of a redox flow battery can prevent reduction in capacity of the redox flow battery.

Abstract: A battery cell assembly having first and second rectangular-shaped end plates, a battery cell, and a metal spring clip are provided. The first rectangular-shaped end plate includes first and second grooves, and the second rectangular-shaped end plate includes first and second grooves. The battery cell is disposed between the first and second rectangular-shaped end plates. The metal spring clip has first and second end portions. The first end portion is disposed in the first groove of the first rectangular-shaped end plate, and the second end portion is disposed in the first groove of the second substantially rectangular-shaped end plate to bias the first rectangular-shaped end plate toward the second rectangular-shaped end plate.

Abstract: There is provided a battery including a positive electrode, a negative electrode, a separator at least including a porous film, and an electrolyte. The positive electrode includes a positive electrode current collector having a pair of surfaces, and a positive electrode active material layer provided on each of the surfaces of the positive electrode current collector. The positive electrode active material layer contains a positive electrode active material. The positive electrode active material layer has an area density S [mg/cm2] more than or equal to 30 mg/cm2. The porous film included in the separator has a porosity ? [%] and an air permeability t [sec/100 cc] which satisfy a predetermined formula.

Abstract: To provide an all-solid lithium ion secondary battery having a high voltage, a small internal resistance, and a discharge capacity close to a theoretical capacity and being able to be produced at low cost, and therefore, even in the case of collective sintering, generation of an inactive material due to interface reaction at the interface between an electrode active material and a solid electrolyte is reduced. An all-solid lithium ion secondary battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, wherein an electrode active material included in the positive electrode layer is a phosphate having an olivine structure; and a solid electrolyte crystal included in the solid electrolyte layer includes polyphosphoric acid and the content of Li2O is 16 mol % to 25 mol % in terms of mol % on an oxide basis.

Abstract: A rechargeable battery including a case including an electrode assembly therein; a cap plate on the case, the cap plate including a short-circuit hole therein; an internal insulator at an inner side of the cap plate, the internal insulator covering the short-circuit hole; first and second electrode terminals that penetrate through the internal insulator and the cap plate and that are electrically connected to the electrode assembly; an external short-circuit part on the cap plate, the external short-circuit part including a membrane electrically connected to the short-circuit hole of the cap plate, the cap plate being electrically connected to the second electrode terminal, and a short-circuit tab electrically connected to the first electrode terminal, the external short-circuit part selectively spacing or short-circuiting the first electrode terminal and the second electrode terminal; and a retainer coupled with the internal insulator, the retainer being between the internal insulator and the electrode assem

Abstract: An alkali metal-sulfur-based secondary battery, in which coulombic efficiency is improved by suppressing a side reaction during charge, and a reduction in discharge capacity by repetition of charge and discharge is suppressed and which has a long battery life and an improved input/output density, includes a positive electrode or a negative electrode containing a sulfur-based electrode active material; an electrolyte solution containing an ether compound such as THF and glyme and a solvent such as a fluorine-based solvent, wherein at least a part of the ether compound and the alkali metal salt forms a complex; and a counter electrode.

Abstract: A carbon material containing boron atom in an amount of 0.001 to 0.5 mass %, in which the average interplanar spacing (d002) of plane (002) is 0.337 nm or less. By observing optical structures in cross-section of formed bodies made of the carbon material, when areas are accumulated from a smallest structure in an ascending order, SOP represents an area of an optical structure whose accumulated area corresponds to 60% of the total area of all optical structures; when the structures are counted from a structure of a smallest aspect ratio in an ascending order, AROP represents the aspect ratio of the structure which ranks at the position of 60% in total number of all the structures; and when D50 represents an average particle diameter; SOP, AROP and D50 satisfy the following relationship: 1.5?AROP?6 and 0.2×D50?(SOP×AROP)1/2<2×D50. Also disclosed is a secondary battery using the carbon material as an electrode material.

Abstract: A power storage device includes a case in which at least one unit cell is housed; a heat exchanger (31) that is provided in a wall surface of the case so as to face both an inside of the case and an outside of the case, and that performs heat exchange between the inside of the case and the outside of the case; and a plurality of dividing members (21, 22) that are arranged in an up-down direction inside the case so as to be opened and closed independently of one another, and that divide a space inside the case into a space in which the at least one unit cell is housed and a space in which the heat exchanger is arranged.

Abstract: Methods and apparatus to form biocompatible energization elements are described. In some examples, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry and placing separators within a laminate structure of the battery. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some examples, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.

Abstract: A silicon/carbon composite comprises mesoporous silicon particles and carbon coating provided on the silicon particles, wherein the silicon particles have two pore size distribution of 2-4 nm and 20-40 nm. A process of preparing the silicon/carbon composite comprises the steps of preparing mesoporous silicon particles via a mechanochemical reaction between SiCl4 and Li33Si4 under ball milling and subsequent thermal treatment and washing process, and coating the mesoporous silicon particles with carbon. An anode for lithium ion battery comprises the silicon/carbon composite. A lithium ion battery comprises the silicon/carbon composite.

Abstract: Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm2/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element.

Abstract: Provided is a nonaqueous electrolyte secondary battery including a bottomed cylindrical positive electrode casing and a negative electrode casing which is fixed to an opening of the positive electrode casing through a gasket. The opening of the positive electrode casing is caulked to the negative electrode casing side to seal the accommodation space. A shortest distance L1 between a caulking tip end and the negative electrode casing in the opening of the positive electrode casing is equal to or less than 70% of an average sheet thickness of the positive electrode casing, a shortest distance L2 between a tip end of the negative electrode casing and the positive electrode casing is equal to or less than 60% of the average sheet thickness of the positive electrode casing, and a distance L3 between the tip end of the negative electrode casing and the bottom of the positive electrode casing is equal to or less than 110% of the average sheet thickness of the positive electrode casing.

Abstract: The invention provides a solid-state battery electrode formed of a lithium ion conductor, an active material, and a solid electrolyte and including a granule that contains a plurality of lithium ion conductors and a plurality of active materials, as well as a method of producing a solid-state battery electrode that has a step of preparing a granule that contains a plurality of lithium ion conductors and a plurality of active materials and a step of uniformly mixing the granule with a solid electrolyte.

Abstract: One example of a lithium ion battery component is a lithium ion battery separator including a planar microporous polymer membrane and a chelating agent bonded to the planar microporous polymer membrane through a linking group. The chelating agent is bonded such that the permanent dipole moment of the chelating agent is oriented perpendicular to the plane of the planar microporous polymer membrane.

Abstract: In order to provide a battery pack that can be produced highly efficiently and contribute to an improvement in productivity, a battery pack of the present invention includes: a plurality of unit batteries 100 that include a positive-electrode pulled-out tab 120 and a negative-electrode pulled-out tab 130; and a board 300 on which pulled-out tab connection sections are formed to connect the pulled-out tabs of different polarities of adjacent unit batteries 100.

Abstract: A method is provided for mitigating hydrogen evolution within a flow battery system that includes a plurality of flow battery cells, a power converter and an electrochemical cell. The method includes providing hydrogen generated by the hydrogen evolution within the flow battery system to the electrochemical cell. A first electrical current generated by an electrochemical reaction between the hydrogen and a reactant is sensed, and the sensed current is used to control an exchange of electrical power between the flow battery cells and the power converter.

Abstract: An object of the present invention is to provide composite carbon fibers in which multiwalled carbon nanotubes are homogeneously dispersed between graphitized carbon nanofibers and near the surface of the graphitized carbon nanofibers, the composite carbon fibers being capable of easily being dispersed in a matrix such as resin without leaving aggregates, and also imparting low resistance. Disclosed are composite carbon fibers comprising multiwalled carbon nanotubes having a fiber diameter of 5 nm or more and 30 nm or less and graphitized carbon nanofibers having a fiber diameter of 50 nm or more and 300 nm or less, wherein the multiwalled carbon nanotubes are homogeneously dispersed between the graphitized carbon nanofibers and near the surface of the graphitized carbon nanofibers.

Abstract: A battery system having a plurality of cells in a battery housing, and an absorption device arranged in the battery housing to absorbs fluid that has escaped in the battery housing.