Provided are a solid electrolyte composition including an inorganic solid electrolyte, binder particles, and a dispersion medium, in which the inorganic solid electrolyte has a conductivity of ions of metals belonging to Group I or II of the periodic table and includes a sulfur atom, and the binder particles are constituted of a polymer having a macromonomer having a mass average molecular weight of 1,000 or more combined therewith as a side chain component and having at least one group from a group of functional groups (b) below, an electrode sheet for a battery and an all solid state secondary battery which are produced using the solid electrolyte composition, a method for manufacturing an electrode sheet for a battery, and a method for manufacturing an all solid state secondary battery. group of functional groups (b) a carboxyl group, a sulfonic acid group, a phosphoric acid group, and a phosphonic acid group.

To provide an electrode composite material that is excellent in conductivity through the excellent contact state of a solid electrolyte and an electrode active material, and is capable of exhibiting a high battery capability, containing the sulfide solid electrolyte and the electrode active material, having an electron conductivity parameter X represented by the prescribed expression satisfying 0.30≤X≤2.10.

Provided are an all-solid state secondary battery including a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer and being coated with an exterior material layer, in which at least a part of the exterior material layer is a rubber-coating layer having a gas transmission coefficient of less than 40 cc.Math.20 μm/m.sup.2.Math.24 h.Math.atm, an exterior material for an all-solid state secondary battery, and a method for manufacturing an all-solid state secondary battery.

An effectively solvent-free alkali metal or alkali earth metal closo-borate salt is prepared in the presence of a non-aqueous solvent where the solvent can be removed to levels below one mole percent of the salt. The process involves the exchange of cations with a closo-borate anion via an acid-base process or a metathesis process. The solvent is removed from the alkali metal or alkali earth metal closo-borate salt by heating. The temperature can be greater than the melting point of the salt but lower than temperatures where decomposition occurs.

An ion-conducting structure comprises a metal-fibril complex formed by one or more elementary nanofibrils. Each elementary nanofibril can be composed of a plurality of cellulose molecular chains with functional groups. Each elementary nanofibril can also have a plurality of metal ions. Each metal ion can act as a coordination center between the functional groups of adjacent cellulose molecular chains so as to form a respective ion transport channel between the cellulose molecular chains. The metal-fibril complex can comprise a plurality of second ions. Each second ion can be disposed within one of the ion transport channels so as to be intercalated between the corresponding cellulose molecular chains. In some embodiments, the metal-fibril complex is formed as a solid-state structure.

A cell according to the present disclosure includes: a solid electrolyte layer including a first surface and a second surface opposite to the first surface; a fuel electrode on the first surface; an air electrode on the second surface; and a middle layer between the second surface and the air electrode. The middle layer=is a CeO.sub.2-type sintered body containing Si, the content of Si equivalent to or less than 150 ppm in terms of SiO.sub.2. A cell stack device includes a cell stack in which the plurality of cells is aligned. A module includes: a storage container; and the cell stack device that is housed in the storage container. A module housing device includes: an external case; the module and an auxiliary equipment that drives the module, which are housed in the external case.

A negative electrode for a lithium metal battery including: a lithium metal electrode including a lithium metal or a lithium metal alloy; and a protective layer on at least portion of the lithium metal electrode, wherein the protective layer has a Young's modulus of about 10.sup.6 pascals or greater and includes at least one particle having a particle size of greater than 1 micrometer to about 100 micrometers, and wherein the at least one particle include an organic particle, an inorganic particle, an organic-inorganic particle, or a combination thereof.

Disclosed are an anode current collector including double coating layers and an all-solid-state battery including the anode current collector.

Provided are an all solid state secondary battery having a positive electrode active material layer, an inorganic solid electrolyte layer, and a negative electrode active material layer in this order, in which at least one layer of the positive electrode active material layer, the inorganic solid electrolyte layer, or the negative electrode active material layer includes an electrolytic polymerizable compound and an inorganic solid electrolyte, in which the electrolytic polymerizable compound is an electrolytic polymerizable compound having a molecular weight of less than 1,000 which is represented by any one of Formulae (1) to (5) below, and the inorganic solid electrolyte contains a metal belonging to Group I or II of the periodic table and has an ion conductivity of the metal being contained, an electrode sheet for a battery, and method for manufacturing an electrode sheet for a battery and an all solid state secondary battery.

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Reference signals each independently represent a specific atom, substituent, or linking group.

Approaches herein provide a device, such as a battery protection device, including a cathode current collector and an anode current collector provided atop a substrate, a cathode provided atop the cathode current collector, and an electrolyte layer provided over the cathode. An interlayer, such as one or more layers of silicon, antimony, magnesium, titanium, magnesium lithium, and/or silver lithium, is formed over the electrolyte layer. An anode contact layer, such as an anode or anode current collector, is then provided over the interlayer. By providing the interlayer atop the electrolyte layer prior to anode contact layer deposition, lithium from the cathode side alloys with the interlayer, thus providing a more isotropic or uniaxial detachment of the anode contact layer.