Abstract: A main object of the present disclosure is to provide an all solid state battery with high coulomb efficiency even when the thickness of an anode active material layer is varied due to charge and discharge. The above object is achieved by providing an all solid state battery comprising: a power generation element including a cathode, a solid electrolyte layer, and an anode, in this order, and an exterior body storing the power generation element, and the anode includes at least an anode current collector, and the anode current collector includes a current collection part, and an elastic part placed on other side of the solid electrolyte layer, with respect to the current collection part.

Abstract: Provided is an all-solid-state battery with high charge-discharge efficiency. Disclosed is an all-solid-state battery, wherein the all-solid-state battery comprises a cathode comprising a cathode layer, an anode comprising an anode layer, and a solid electrolyte layer disposed between the cathode layer and the anode layer; wherein the anode layer contains at least one selected from the group consisting of a lithium metal and a lithium alloy; and wherein a protective layer comprising a composite metal oxide represented by Li-M-O (where M is at least one metal element selected from the group consisting of Mg, Au, Al and Sn) is disposed between the anode layer and the solid electrolyte layer.

Abstract: Provided is an all-solid-state battery with high charge-discharge efficiency, and a method for producing the all-solid-state battery. Disclosed is an all-solid-state battery, wherein a lithium metal precipitation-dissolution reaction is used as an anode reaction; wherein the all-solid-state battery comprises a cathode comprising a cathode layer, an anode comprising an anode current collector and an anode layer, and a solid electrolyte layer disposed between the cathode layer and the anode layer; wherein the anode layer contains, as an anode active material, a single ?-phase alloy of a lithium metal and a magnesium metal; and wherein a percentage of the lithium element in the alloy is 81.80 atomic % or more and 99.97 atomic % or less when the all-solid-state battery is fully charged.

Abstract: A cathode mixture having a low irreversible capacity is disclosed. The cathode mixture contains: a cathode active material having a S element; a sulfur-containing compound having a B element and a S element; and a conductive additive, wherein the cathode mixture does not substantially have a Li element, and a standard value that is defined by the following formula is at least 0.56 when the diffracted intensity at 11.5° in 2? is defined as I11.5, the diffracted intensity at 23.1° in 2? is defined as I23.1, and the diffracted intensity at 40° in 2? is defined as I40 in the X-ray diffraction measurement using CuK? radiation: standard value=(I11.5?I40)/(I23.1?I40).

Abstract: A main object of the present disclosure is to provide a cathode mixture with good rate property. The present disclosure achieves the object by providing a cathode mixture comprising: a solid solution of a sulfur simple substance, P2S5 and Li3PO4, and a conductive auxiliary material, and a molar ratio of the Li3PO4 to the P2S5 is 0.05 or more and 0.67 or less.

Abstract: An all-solid lithium secondary battery includes a positive electrode active material layer, a metallic lithium absorption layer, a solid electrolyte layer, and a negative electrode active material layer in this order. The solid electrolyte layer is in contact with the negative electrode active material layer. The metallic lithium absorption layer contains a metallic lithium reactive substance. The metallic lithium reactive substance reacts with metallic lithium to generate an electron conductor which is stable under charging and discharging conditions of the all-solid lithium secondary battery.

Abstract: There is provided a lithium secondary battery containing lithium metal as the negative electrode active material, which can inhibit reduction in charge-discharge capacity while also minimizing internal short circuiting. The lithium secondary battery of the disclosure has a construction with a positive electrode active material layer, a separator layer and a negative electrode active material layer laminated in that order, wherein the negative electrode active material layer comprises lithium metal, the separator layer has a shut layer and one or more solid electrolyte layers, one of the solid electrolyte layers is adjacent to the negative electrode active material layer, and the shut layer comprises a lithium ion conductive liquid that reacts with the lithium metal to produce an electronic insulator.

Abstract: Provided is a method for charging a secondary battery configured to both suppress battery short circuits and to reduce battery charging time. The charging method is a multistep secondary battery charging method comprising first charging in which a secondary battery is charged at a first current density I1, and second charging in which the secondary battery is charged at a second current density I2 which is larger than the first current density I1, wherein, when a roughness height of an anode current collecting foil-side surface of a solid electrolyte layer is determined as Y (?m) and a thickness of a roughness coating layer is determined as X (?m), in the first charging, the secondary battery is charged at the first current density I1 until X/Y reaches 0.5 or more.

Abstract: An object of the present disclosure is to produce an all solid state battery in which the resistance increase during discharge is inhibited. The present disclosure achieves the object by providing an all solid state battery comprising a cathode layer, a solid electrolyte layer, and an anode layer in this order; wherein the cathode layer comprises a cathode active material including a S element, a sulfur containing compound including an M element, which is P, Ge, Sn, Si, B or Al, and a S element, a conductive auxiliary material, and substantially no Li element; and the solid electrolyte layer contains a garnet-type oxide solid electrolyte or ?-alumina.

Abstract: An object of the present disclosure is to produce a cathode mixture with which the charge and discharge capacities of a sulfur battery can be increased. The present disclosure achieves the object by providing a method for producing a cathode mixture used in a sulfur battery, wherein the cathode mixture is produced by a mechanical milling treatment of a raw material mixture comprising: Li2S, LiX, in which X is selected from F, Cl, Br, or I, and MxSy, in which M is selected from P, Si, Ge, B, Al, or Sn, x and y is an integer that gives electric neutrality to S according to the kind of M; a cathode active material including an elemental sulfur; and a conductive auxiliary material including a carbon material.

Abstract: An object of the present disclosure is to produce a cathode mixture with high capacity. The present disclosure achieves the object by providing a cathode mixture comprising: a cathode active material including a S element; a sulfur containing compound including an M element, which is Ge, Sn, Si, B or Al, and a S element; a conductive auxiliary material; and substantially no Li element.

Abstract: An object of the present disclosure is to produce a cathode mixture with less irreversible capacity. The present disclosure achieves the object by providing a cathode mixture comprising: a cathode active material including a S element; a sulfur containing compound including a P element and a S element; a conductive auxiliary material; and substantially no Li element; wherein when a diffraction intensity at 2?=15.5° in an X-ray diffraction measurement using a CuK? ray is regarded as I15.5, a diffraction intensity at 2?=25° is regarded as I25, and a diffraction intensity at 2?=40° is regarded as I40, a standard value defined by the following formula is more than 1.2. Standard value=(I15.

Abstract: A method for estimating, under total voltage monitoring, degradation states of individual unit cells connected in series of an all-solid-state lithium secondary battery includes: calculating, at several timings, a state of charge and open circuit voltage of the battery to acquire an actual state of charge-open circuit voltage curve representing the relationship between the state of charge and the open circuit voltage, selecting, from a map of state of charge-open circuit voltage curves, a curve for which a degree of matching with the actual state of charge-open circuit voltage curve is equal to or greater than a predetermined value or is greatest. The map curves are obtained by integrating as many state of charge-open circuit voltage curves of the unit cell corresponding to different degrees of degradation of the unit cell as the number of unit cells, and estimating the individual unit cells degradation states based on the selected curve.

Abstract: A secondary battery system and a secondary battery control method, wherein the system and the method include a plurality of unit cells connected in series, and a recovery charging controller that performs recovery charging of charging the plurality of unit cells while generating a micro short-circuit in at least one of the plurality of unit cells by charging the plurality of unit cells at a predetermined recovery charging current value which is higher than a upper limit current value during normal charging, wherein the unit cells are all-solid-state lithium secondary battery unit cells.

Abstract: An object of the present disclosure is to produce a cathode mixture capable of increasing the charge-discharge capacity of a sulfur battery. The present disclosure achieves the object by providing a cathode mixture used for a sulfur battery and a method for producing the same, wherein the cathode mixture is produced by a mechanical milling treatment of a raw material mixture including Li2S and MxSy wherein M is selected from P, Si, Ge, B, Al, or Sn, and x and y are integers that confer an electroneutrality. with respect to S according to a kind of M; a cathode active material including a sulfur simple substance; and a conductive aid including a carbon material.

Abstract: A main object of the present disclosure is to provide a lithium solid battery in which the coulomb efficiency of the battery upon deposition and dissolution of a metal lithium is improved. The above object is achieved by providing a lithium solid battery comprising: an anode current collector, a solid electrolyte layer, a cathode active material layer, and a cathode current collector; wherein the lithium solid battery comprises a Li storing layer between the anode current collector and the solid electrolyte layer; an amount of Li storage of the Li storing layer to a cathode charging capacity is 0.13 or more; and a thickness of the Li storing layer is 83 ?m or less.

Abstract: A main object of the present disclosure is to provide an all solid state battery in which the reversibility of the deposition and dissolution reaction of a metal Li can be improved while inhibiting an occurrence of short circuit. The above object is achieved by providing an all solid state battery utilizing a deposition and dissolution reaction of a metal Li as an anode reaction, the all solid state battery comprising: an anode current collector, a porous layer comprising a resin, a solid electrolyte layer, a cathode active material layer, and a cathode current collector, in this order; wherein an electric resistance of the porous layer is 1? or more and 690? or less; and a thickness of the porous layer is 14 ?m or less.

Abstract: A battery system 5 is provided with an all-solid-state battery 10, a voltage detection device that detects voltage of the all-solid-state battery, a current detection device 66 that detects current flowing from the all-solid-state battery, and a control device 50 that controls the all-solid-state battery. A negative electrode active material layer is composed of lithium metal. The control device calculates the amount of change in charging rate as a first estimated value, based on an integrated value obtained by integrating detected current over a prescribed calculation period, calculates the amount of change in charging rate as a second estimated value, based on voltage detected during the calculation period as a second estimated value, and judges that an abnormality has occurred in the all-solid-state battery when the difference between the first estimated value and the second estimated value is equal to or greater than a predetermined reference value.

Abstract: A battery system includes a nickel hydride battery and an electronic control unit. The electronic control unit is configured to store data indicating a corresponding relationship between an elapsed time from start of use of the nickel hydride battery and a memory quantity. The data are data determined in a classified manner individually for each of conditions of use that are defined in such a manner as to include an open circuit voltage and a temperature. The electronic control unit is configured to sequentially calculate, with reference to the data, the memory quantity within a time when classification of the conditions of use does not change. The memory quantity is a quantity indicating an amount of change in voltage resulting from a memory effect. The electronic control unit is configured to estimate a current memory quantity of the nickel hydride battery by integrating the calculated memory quantity.

Abstract: A cathode active material for sodium batteries has excellent discharge capacity, and a sodium battery has the cathode active material for sodium batteries. A cathode active material for sodium batteries is represented by a general formula Na4Co(3-x)Mx(PO4)2P2O7; M is any of Fe, Cr, Mn and Al; X is 0.015?x?0.21 when M is Fe; X is 0.03?x?0.18 when M is Cr; X is 0.006?x?0.24 when M is Mn; and X is 0.03?x?0.06 when M is Al.