Abstract: To improve durability of an all-solid-state battery, a method of manufacturing an all-solid-state battery includes: obtaining a stack having an anode active material layer, a cathode active material layer, a first solid electrolyte layer, and a second solid electrolyte layer, the first solid electrolyte layer and the second solid electrolyte layer being disposed between the anode active material layer and the cathode active material layer, the second solid electrolyte layer containing a sublimational filler; densifying the stack; and subliming the sublimational filler from the second solid electrolyte layer.

Abstract: A solid electrolyte sheet of the present disclosure comprises a nonwoven fabric and a solid electrolyte disposed inside the nonwoven fabric. The pore diameter of the nonwoven fabric is 15 ?m or less. The ratio of the pore diameter relative to a particle diameter of the solid electrolyte (pore diameter/particle diameter) is 5.0 or more.

Abstract: An all solid state battery includes an electrode structure body including a cathode layer, an anode layer, and a solid electrolyte layer arranged between the cathode layer and the anode layer, wherein: the electrode structure body includes a facing part where the cathode layer and the anode layer face to each other; in a plan view along a thickness direction, a shape of the facing part is a rectangular shape including a longer side and a shorter side; a rate of a length of the longer side with respect to a length of the shorter side is 1.5 or more; the solid electrolyte layer contains a nonwoven fabric, and a solid electrolyte arranged inside the nonwoven fabric; and in the plan view, an angle formed by a longer direction in the facing part and a fabric direction in the nonwoven fabric is 0° or more and 30° or less.

Abstract: A solid-state battery including a cathode layer, a solid electrolyte layer and an anode layer in this order. The solid electrolyte layer includes a first solid electrolyte layer and a second solid electrolyte layer. The first solid electrolyte layer is disposed adjacent to the cathode layer or the anode layer. The second solid electrolyte layer is disposed adjacent to the first solid electrolyte layer. The first solid electrolyte layer includes a solid electrolyte. The second solid electrolyte layer includes a support with pores and the solid electrolyte, and the second solid electrolyte layer is a sheet in which the solid electrolyte is fixed on a surface of and in the pores of the support.

Abstract: An all solid state battery includes a cathode layer, an anode layer, and a solid electrolyte layer arranged between the cathode layer and the anode layer, wherein: the solid electrolyte layer includes a first solid electrolyte layer, and a second electrolyte layer arranged in the anode layer side compared to the first solid electrolyte layer; the first solid electrolyte layer contains a first nonwoven fabric, and a first solid electrolyte arranged inside the first nonwoven fabric; the second solid electrolyte layer contains a second nonwoven fabric, and a second solid electrolyte arranged inside the second nonwoven fabric; and in a plan view along a thickness direction, an angle formed by a first fabric direction in the first nonwoven fabric and a second fabric direction in the second nonwoven fabric is 45° or more and 90° or less.

Abstract: A main object of the present disclosure is to provide an all solid state battery with excellent cycle characteristics. The present disclosure achieves the object by providing an all solid state battery comprising, in an order of, a cathode CA1, a first solid electrolyte layer, an anode AN, a second solid electrolyte layer, and a cathode CA2, along a thickness direction, wherein: the first solid electrolyte layer contains a first nonwoven fabric, and a first solid electrolyte arranged inside the first nonwoven fabric; the second solid electrolyte layer contains a second nonwoven fabric, and a second solid electrolyte arranged inside the second nonwoven fabric; and in a plan view along the thickness direction, an angle formed by a first fabric direction in the first nonwoven fabric and a second fabric direction in the second nonwoven fabric is 45° or more and 90° or less.

Abstract: A main object of the present disclosure is to provide an all solid state battery with good cycle property even when the confining pressure applied to an electrode stacked body is low. The present disclosure achieves the object by providing an all solid state battery comprising an electrode stacked body including a cathode layer, an anode layer, and a solid electrolyte layer placed between the cathode layer and the anode layer; and the electrode stacked body is confined under confining pressure of 0 MPa or more and 2 MPa or less in a thickness direction; the anode layer includes an anode active material with a volume expansion rate due to charge of 105% or more; the solid electrolyte layer includes a solid electrolyte and a binder; and a ratio of the binder in the solid electrolyte layer is 20 volume % or more and 30 volume % or less.

Abstract: A main object of the present disclosure is to provide an all solid state battery with low battery resistance even when the confining pressure applied to an electrode stacked body is low. The present disclosure achieves the object by providing an all solid state battery comprising an electrode stacked body including a cathode layer, an anode layer, and a solid electrolyte layer placed between the cathode layer and the anode layer; and the electrode stacked body is confined under confining pressure of 0 MPa or more and 2 MPa or less in a thickness direction; the anode layer includes an anode active material with a volume expansion rate due to charge of 105% or more; the solid electrolyte layer includes a solid electrolyte and a binder; and a ratio of the binder in the solid electrolyte layer is 4 volume % or more and 20 volume % or less.

Abstract: To improve durability of an all-solid-state battery, a method of manufacturing an all-solid-state battery includes: obtaining a stack having an anode active material layer, a cathode active material layer, a first solid electrolyte layer, and a second solid electrolyte layer, the first solid electrolyte layer and the second solid electrolyte layer being disposed between the anode active material layer and the cathode active material layer, the second solid electrolyte layer containing a sublimational filler; densifying the stack; and subliming the sublimational filler from the second solid electrolyte layer.

Abstract: A method of producing a secondary battery disclosed here includes forming a positive electrode active material layer containing a lithium- and manganese-containing composite oxide on a positive electrode current collector to produce a positive electrode; measuring a peel strength between the positive electrode active material layer and the positive electrode current collector; producing a secondary battery assembly including the positive electrode, a negative electrode, and a nonaqueous electrolyte using the positive electrode; and initially charging the secondary battery assembly. When the secondary battery assembly is initially charged, a restraining pressure is determined based on the measured peel strength, and in a predetermined peel strength range, a higher restraining pressure is set for a secondary battery assembly including a positive electrode having a low peel strength than for a secondary battery assembly including a positive electrode having a large peel strength.

Abstract: The present invention provides a positive electrode material for lithium secondary batteries, having: a positive electrode active material containing Li; and a cover disposed on the positive electrode active material, and containing Li and F, and further containing one or two or more cover elements from among Al, Ti, Zr, Ta and Nb. With a Point a as an arbitrary point of the cover in contact with the positive electrode active material, a Point c as a point on the surface of the cover at a shortest distance from the Point a, and a Point b as a midpoint between the Point a and the Point c, an analysis of the Point a, the Point b and the Point c by X-ray photoelectron spectroscopy yields a ratio of Li concentration at the Point a with respect to the Li concentration at the Point b is 1.1 or higher and lower than 10.8, and a ratio of F concentration at the Point c with respect to F concentration at the Point b is 1.1 or higher and lower than 51.1.

Abstract: The present invention provides a positive electrode material for lithium secondary batteries, having: a positive electrode active material containing Li; and a cover disposed on the positive electrode active material, and containing Li and F, and further containing one or two or more cover elements from among Al, Ti, Zr, Ta and Nb. With a Point a as an arbitrary point of the cover in contact with the positive electrode active material, a Point c as a point on the surface of the cover at a shortest distance from the Point a, and a Point b as a midpoint between the Point a and the Point c, an analysis of the Point a, the Point b and the Point c by X-ray photoelectron spectroscopy yields a ratio of Li concentration at the Point a with respect to the Li concentration at the Point b is 1.1 or higher and lower than 10.8, and a ratio of F concentration at the Point c with respect to F concentration at the Point b is 1.1 or higher and lower than 51.1.

Abstract: A method of producing a secondary battery disclosed here includes forming a positive electrode active material layer containing a lithium- and manganese-containing composite oxide on a positive electrode current collector to produce a positive electrode; measuring a peel strength between the positive electrode active material layer and the positive electrode current collector; producing a secondary battery assembly including the positive electrode, a negative electrode, and a nonaqueous electrolyte using the positive electrode; and initially charging the secondary battery assembly. When the secondary battery assembly is initially charged, a restraining pressure is determined based on the measured peel strength, and in a predetermined peel strength range, a higher restraining pressure is set for a secondary battery assembly including a positive electrode having a low peel strength than for a secondary battery assembly including a positive electrode having a large peel strength.

Abstract: A method of producing a secondary battery disclosed here includes forming a positive electrode active material layer containing a lithium- and manganese-containing composite oxide on a positive electrode current collector to produce a positive electrode; measuring a peel strength between the positive electrode active material layer and the positive electrode current collector; producing a secondary battery assembly including the positive electrode, a negative electrode, and a nonaqueous electrolyte using the positive electrode; and initially charging the secondary battery assembly. When the secondary battery assembly is initially charged, a charging rate is determined based on the measured peel strength, and in a predetermined peel strength range, a lower charging rate is set for a secondary battery assembly including a positive electrode having a low peel strength than for a secondary battery assembly including a positive electrode having a large peel strength.

Abstract: The present invention provides a positive electrode material for lithium secondary batteries, having: a positive electrode active material containing Li; and a cover disposed on the positive electrode active material, and containing Li and F, and further containing one or two or more cover elements from among Al, Ti, Zr, Ta and Nb. With a Point a as an arbitrary point of the cover in contact with the positive electrode active material, a Point c as a point on the surface of the cover at a shortest distance from the Point a, and a Point b as a midpoint between the Point a and the Point c, an analysis of the Point a, the Point b and the Point c by X-ray photoelectron spectroscopy yields a ratio of Li concentration at the Point a with respect to the Li concentration at the Point b is 1.1 or higher and lower than 10.8, and a ratio of F concentration at the Point c with respect to F concentration at the Point b is 1.1 or higher and lower than 51.1.

Abstract: A method of producing a secondary battery disclosed here includes forming a positive electrode active material layer containing a lithium- and manganese-containing composite oxide on a positive electrode current collector to produce a positive electrode; measuring a peel strength between the positive electrode active material layer and the positive electrode current collector; producing a secondary battery assembly including the positive electrode, a negative electrode, and a nonaqueous electrolyte using the positive electrode; and initially charging the secondary battery assembly. When the secondary battery assembly is initially charged, a charging rate is determined based on the measured peel strength, and in a predetermined peel strength range, a lower charging rate is set for a secondary battery assembly including a positive electrode having a low peel strength than for a secondary battery assembly including a positive electrode having a large peel strength.

Abstract: Provided is an oil separator built-in compressor, which prevents a drop in the separating ability of an oil separator while reducing a pressure loss in a communication hole formed between a discharge chamber and an oil separation chamber and which also considers the working feasibility of a casing. The oil separator built-in compressor comprises: a separation chamber arranged adjacent to the discharge chamber and formed entirely thereof into a space in order to separate an oil-containing gas being introduced, centrifugally into gas and oil so that the separated oil flows downward whereas the separated gas is released upward; and the communication hole formed between the discharge chamber and the separation chamber in order to introduce the oil-containing gas from the discharge chamber into the separation chamber.