Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.

Abstract: The main object of the present invention is to provide an active material that has a favorable cycle property. The present invention achieves the object by providing an active material to be used for a fluoride ion battery comprising a crystal phase having a layered perovskite structure, and represented by An+1BnO3n+1??Fx (A is composed of at least one of an alkaline earth metal element and a rare earth element; B is composed of at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “?” satisfies 0???2; and “x” satisfies 0?x?2.2).

Abstract: A main object of the present disclosure is to provide a novel cathode active material that can be used in a fluoride ion battery. The present disclosure achieves the object by providing a cathode active material used in a fluoride ion battery, the cathode active material comprising: a composition represented by Pb2MF6, in which M is at least one of Mn, Fe, Co, and Ni.

Abstract: A rechargeable sulfide solid-state cell. The sulfide solid-state cell may include: a cathode active material layer containing at least one kind of cathode active material selected from LiCoPO4 and LiFePO4; an anode active material layer; a sulfide-based solid electrolyte layer containing a sulfide-based solid electrolyte and being disposed between the cathode active material layer and the anode active material layer; and a blocking layer containing at least one kind of phosphoric acid compound with a NASICON structure, covering at least a part of the surface of the cathode active material and/or the surface of the sulfide-based solid electrolyte, being disposed between the cathode active material layer and the sulfide-based solid electrolyte layer, and being configured to prevent the cathode active material layer from contact with the sulfide-based solid electrolyte layer, the phosphoric acid compound being selected from LATP and LAGP.

Abstract: A main object of the present disclosure is to provide a cathode active material that is used in a fluoride ion battery and is capable of being charged and discharged at a high potential. The present disclosure achieves the object by providing a cathode active material used in a fluoride ion battery, the cathode active material comprising: a Ce element, a S element, and a F element; and a composition represented by CeSF.

Abstract: A main object of the present disclosure is to provide a novel cathode active material that may be used for a fluoride ion battery. The present disclosure achieves the object by providing a cathode active material used for a fluoride ion battery, comprising a composition represented by Pb2?xCu1+xF6, wherein 0?x<2.

Abstract: A main object of the present disclosure is to provide a fluoride ion battery in which reduction decomposition of a solid electrolyte is inhibited. The present disclosure achieves the object by providing a fluoride ion battery, comprising a cathode layer, an anode layer, and a solid electrolyte layer formed between the cathode layer and the anode layer; wherein the anode layer contains an anode active material having a composition represented by La(1-x)SnxF(3-x), in which 0.1?x?0.8; and the solid electrolyte layer contains a solid electrolyte including a crystal phase of a Tysonite structure.

Abstract: An object of the present disclosure relates to an electrode active material that has excellent discharge capacity and is used in an all solid fluoride ion battery. The present disclosure achieves the object by providing an electrode active material to be used in an all solid fluoride ion battery, the electrode active material comprising: an active material region that contains an active material component including a layered structure; and a coating region positioned in a surface side of the active material region; and a fluorine concentration in the coating region is higher than a fluorine concentration in the active material region.

Abstract: A main object of the present disclosure is to provide a fluoride ion battery having a high charge-discharge potential. The present disclosure achieves the object by providing a fluoride ion battery comprising a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer, and the cathode active material layer includes a cathode active material having a composition represented by CuxS, wherein 1?x?2.

Abstract: An object of the present disclosure is to provide a secondary battery system that functions at high voltage. The present disclosure attains the object by providing a secondary battery system comprising: a fluoride ion battery including a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; and a controlling portion that controls charging and discharging of the fluoride ion battery; wherein the cathode active material layer contains a cathode active material with a crystal phase that has a Perovskite layered structure and is represented by An+1BnO3n+1-?Fx (A comprises at least one of an alkali earth metal element and a rare earth element; B comprises at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “?” satisfies 0???3.5; and “x” satisfies 0?x?5.

Abstract: An active material has a favorable capacity property. The active material is to be used for a fluoride ion battery, the active material including a crystal phase having a perovskite structure, and represented by ABO3 or a fluoride of the ABO3, in which the A and the B are different metal elements; the A includes at least one kind of a metal element belonging to Group 2 and Group 3 in the periodic table; and the B includes at least one kind of a transition metal element belonging to Period 4 to Period 6 in the periodic table.

Abstract: A fluoride ion battery in which an occurrence of a short circuit is suppressed achieves the object by providing a fluoride ion battery including: an electrode layer that includes a first metal element or a carbon element and has capability of fluorination and defluorination; a solid electrolyte layer containing a solid electrolyte material, the solid electrolyte material including a second metal element with lower fluorination potential and defluorination potential than the potentials of the first metal element or the carbon element; and an anode current collector, in this order; and an anode active material layer being not present between the solid electrolyte layer and the anode current collector; and at least one of the solid electrolyte layer and the anode current collector includes a simple substance of Pb, Sn, In, Bi, or Sb, or an alloy containing one or more of these metal elements.

Abstract: An object of the present disclosure is to provide a solid electrolyte material with excellent ion conductivity at a low temperature. The present disclosure achieves the object by providing a solid electrolyte material to be used for a fluoride ion battery, the solid electrolyte material comprising: a solid electrolyte particle including a crystal phase, that has a Tysonite structure and contains an F element, as a main phase; and CsF; and the CsF content in the solid electrolyte material is 50% by weight or less.

Abstract: An object of the present disclosure is to provide a fluoride ion battery of which power generating elements (a cathode active material layer, a solid electrolyte layer, and an anode active material layer) may be formed by two kinds of members: an electrode layer and a solid electrolyte layer. The present disclosure achieves the object by providing a fluoride ion battery comprising: an electrode layer that includes a first metal element or a carbon element and has capability of fluorination and defluorination; a solid electrolyte layer containing a solid electrolyte material, the solid electrolyte material including a second metal element with lower fluorination potential and defluorination potential than the potentials of the first metal element or the carbon element; and an anode current collector, in this order; and an anode active material layer being not present between the solid electrolyte layer and the anode current collector.

Abstract: An object of the present disclosure is to provide a secondary battery system that functions at high voltage. The present disclosure attains the object by providing a secondary battery system comprising: a fluoride ion battery including a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; and a controlling portion that controls charging and discharging of the fluoride ion battery; wherein the cathode active material layer contains a cathode active material with a crystal phase that has a Perovskite layered structure and is represented by An+1BnO3n+1-?Fx (A comprises at least one of an alkali earth metal element and a rare earth element; B comprises at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “?” satisfies 0???3.5; and “x” satisfies 0?x?5.

Abstract: The main object of the present invention is to provide an active material that has a favorable cycle property. The present invention achieves the object by providing an active material to be used for a fluoride ion battery comprising a crystal phase having a layered perovskite structure, and represented by An+1BnO3n+1??Fx (A is composed of at least one of an alkaline earth metal element and a rare earth element; B is composed of at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “?” satisfies 0???2; and “x” satisfies 0?x?2.2).

Abstract: The positive electrode active material layer has a first positive electrode active material represented by LixYyPOz wherein, Y represents at least one element selected from the group consisting of Ni, Mn and Co, and a second positive electrode active material represented by Lix?Fey?POz?. The second positive electrode active material is (1) arranged as the sulfide solid electrolyte layer side part of the positive electrode active material layer (2) arranged on the surface of particles of the first positive electrode active material, or (3) arranged as the sulfide solid electrolyte layer side part of the positive electrode active material layer and arranged on the surface of particles of the first positive electrode active material.

Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.

Abstract: A rechargeable sulfide solid-state cell. The sulfide solid-state cell may include: a cathode active material layer containing at least one kind of cathode active material selected from LiCoPO4 and LiFePO4; an anode active material layer; a sulfide-based solid electrolyte layer containing a sulfide-based solid electrolyte and being disposed between the cathode active material layer and the anode active material layer; and a blocking layer containing at least one kind of phosphoric acid compound with a NASICON structure, covering at least a part of the surface of the cathode active material and/or the surface of the sulfide-based solid electrolyte, being disposed between the cathode active material layer and the sulfide-based solid electrolyte layer, and being configured to prevent the cathode active material layer from contact with the sulfide-based solid electrolyte layer, the phosphoric acid compound being selected from LATP and LAGP.

Abstract: An object of the present invention is to provide a fluoride ion battery in which excess voltage at the time of charging is decreased. The present invention achieves the object by providing a fluoride ion battery comprising a cathode active material layer containing a cathode active material, an anode active material layer containing an anode active material, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; wherein the anode active material is an alloy containing at least a Ce element and a Pb element.