Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material layer that includes a positive electrode active material, a fluorine-based binder having a melting point from 152° C. to 166° C., a conductive assistant having a specific surface area from 1000 m2/g to 1500 m2/g, and a vinylpyrrolidone-based polymer.

Abstract: A battery includes a positive electrode; a negative electrode; a separator; and an intermediate layer. The intermediate layer is provided between the positive electrode and the separator and includes one or both of a fluororesin and a particle. The positive electrode has a positive electrode active material layer including a fluorine-based binder having a melting point of 166° C. or less, and a content of the fluorine-based binder in the positive electrode active material layer is from 0.5% by mass to 2.8% by mass.

Abstract: A solid-state battery that includes: a solid-state battery laminate including at least one battery constituent unit including: a positive electrode layer, the positive electrode layer containing a conductive carbon material; a positive electrode current collecting portion arranged at an end surface of the positive electrode layer; a negative electrode layer; and a solid-state electrolyte layer interposed between the positive electrode layer and the negative electrode layer in a stacking direction thereof; a positive electrode terminal electrically connected to the positive electrode current collecting portion; and a negative electrode terminal electrically connected to the negative electrode layer.

Abstract: A solid state battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, wherein the positive electrode layer includes a positive electrode active material in which a spacing d003 of a lattice plane (003) is 4.800 ? or more in a charged state at a positive electrode potential of 4.55 V.

Abstract: A solid-state battery including a solid-state battery laminate in which a positive electrode layer, a negative electrode layer, and a solid electrolyte layer are laminated with the solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, and positive and negative external terminals are on side surfaces of the solid-state battery laminate. The positive electrode layer and the negative electrode layer each include an active material portion containing an active material , and a current collector portion having a relatively small active material density with respect to the active material portion and arranged on an edge surface of the active material portion so as to form an edge surface current collecting structure in which a current can be collected using the current collector portion on the edge surface of the active material portion.

Abstract: A solid-state battery including a solid-state battery laminated body including a positive electrode layer, a negative electrode layer, and a solid electrolyte interposed between the positive electrode layer and the negative electrode layer; a positive electrode terminal on a first side surface of the solid-state battery laminated body; and a negative electrode terminal on a second side surface of the solid-state battery laminated body, the second side surface facing the first side surface. In such a solid-state battery, in at least one electrode layer of the positive electrode layer and the negative electrode layer, a terminal contact end portion containing an electrode active material is in direct contact with the respective positive or negative electrode terminal, and a thickness of a non-terminal contact end portion in the electrode layer is smaller than a thickness of a central portion of the electrode layer.

Abstract: A secondary battery includes a plurality of positive electrodes having a positive electrode active material layer including a fluorine-based binder having a melting point of 166° C. or less, a plurality of negative electrodes having a negative electrode active material layer, and an electrolyte. The positive electrode active material layer and the negative electrode active material layer face each other and an edge of the positive electrode active material layer is located inside an edge of the negative electrode active material layer.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material layer that includes a positive electrode active material, a fluorine-based binder having a melting point from 152° C. to 166° C., a conductive assistant having a specific surface area from 1000 m2/g to 1500 m2/g, and a vinylpyrrolidone-based polymer.

Abstract: A battery includes a positive electrode that includes a positive electrode current collector and a positive electrode active material layer provided on the positive electrode current collector and has a positive electrode current collector exposed portion at which the positive electrode current collector is exposed; a negative electrode that includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector and has a negative electrode current collector exposed portion at which the negative electrode current collector is exposed; a separator provided between the positive electrode and the negative electrode; and an intermediate layer that is provided between the separator and at least one of the positive and negative electrodes and includes at least one of a fluororesin and a grain.

Abstract: It is an object to provide a battery and a battery module having excellent reliability. There is provided a battery including a battery element, an exterior body that covers the battery element, and a conductor, in which the conductor is disposed outside the battery element, and the conductor has a cut portion, and there is further provided a battery module including a plurality of batteries and a conductor, in which each of the batteries includes a battery element and an exterior body that covers the battery element, the conductor is disposed outside the battery element, and the conductor has a cut portion.

Abstract: A battery includes a positive electrode; a negative electrode; a separator; and an intermediate layer. The intermediate layer is provided between the positive electrode and the separator and includes one or both of a fluororesin and a particle. The positive electrode has a positive electrode active material layer including a fluorine-based binder having a melting point of 166° C. or less, and a content of the fluorine-based binder in the positive electrode active material layer is from 0.5% by mass to 2.8% by mass.