A main object of the present disclosure is to provide an all solid state battery wherein interface resistance between a current collector and an active material layer is low. In the present disclosure, the above object is achieved by providing an all solid state battery comprising: an electrode including a current collector, an electron conductive layer, and an active material layer, in this order, and a solid electrolyte layer formed on the active material layer side of the electrode, and the electron conductive layer is an agglutinate of metal particles or a metal foil, and electron conductivity of the electron conductive layer is 1×10.sup.3 S/cm or more at 25° C.

The invention provides a zwitterionic plastic crystal (ZIPC) compound in the form of a single molecule comprising: at least one positively charged functional group carrying at least one positive charge, and at least one negatively functional group carrying at least one negative charge, wherein the positively charged functional groups and the negatively charged functional groups are covalently tethered together in the molecule, and the net charge of the zwitterionic compound is zero, and wherein the compound exhibits evidence of molecular disorder in the solid state.

Provided is an anode configured to increase the ion conductivity of an anode layer and suppress a decrease in the energy density of the anode layer. Disclosed is an anode, wherein the anode is an anode comprising an anode layer for all-solid-state batteries; wherein the anode layer comprises an anode active material, a solid electrolyte and an ionic liquid; wherein the anode layer comprises at least one Si-based material selected from the group consisting of elemental Si and Si alloy as the anode active material; and wherein the ionic liquid is a solvated ionic liquid containing, in molar ratio, 1.5 mol or more of lithium bis(fluorosulfonyl)imide with respect to 1 mol of tetraglyme, or the ionic liquid is a solvated ionic liquid containing, in molar ratio, 2.0 mol or more of lithium bis(trifluoromethanesulfonyl)imide with respect to 1 mol of tetraglyme.

A solid electrolyte represented by general formula Li.sub.ySiR.sub.x(MO.sub.4), where x is an integer from 1 to 3 inclusive, y=4−x, each R present is independently C1-C3 alkyl or C1-C3 alkoxy, and M is sulfur, selenium, or tellurium. Methods of making the solid electrolyte include combining a phenylsilane and a first acid to yield mixture including benzene and a second acid, and combining at least one of an alkali halide, and alkali amide, and an alkali alkoxide with the second acid to yield a product d represented by general formula Li.sub.ySiR.sub.x(MO.sub.4).sub.y. The second acid may be in the form of a liquid or a solid. The phenylsilane includes at least one C1-C3 alkyl substituent or at least one C1-C3 alkoxy substituent, and the first acid includes at least one of sulfuric acid, selenic acid, and telluric acid.

What is provided is a solid state battery and a solid state battery manufacturing method capable of more reliably preventing short-circuiting. A solid state battery includes: a first electrode piece in which a first electrode active material layer is formed on a first current collector layer; a second electrode piece in which a second electrode active material layer is formed on a second current collector layer; and a bag-shaped solid electrolyte layer which accommodates the first electrode piece, wherein the first electrode piece accommodated in the bag-shaped solid electrolyte layer and the second electrode piece are laminated so as to overlap each other in a plan view so that the first electrode active material layer and the second electrode active material layer are disposed so as to face each other with the solid electrolyte layer interposed therebetween.

A metal battery, such as a lithium battery, includes an anode, an anode current collector in electrical contact with the anode, a cathode, a cathode current collector in electrical contact with the cathode, a separator disposed between the anode and cathode, a liquid electrolyte, and an anode protection structure. The anode protection structure includes an anode protection layer disposed between the anode and the separator. The anode protection layer includes a matrix and domains within the matrix. One of the matrix and domains contains a first material and the other of the matrix and domains contains a second material. The first material is less permeable by the electrolyte than the second material.

An all-solid-state rechargeable battery and a stacked all-solid-state rechargeable battery capable of reducing surface unevenness are provided. The battery makes it more difficult to crack a current collecting unit and to cut the current collecting unit, and the battery may be easily manufactured. The all-solid-state rechargeable battery includes positive and negative electrode layers; solid electrolyte layers stacked between the positive and negative electrode layers; an insulating layer on a side end surface of the positive electrode layer that covers the positive electrode layer; and thin type positive and negative electrode current collecting units protruding laterally from the positive and negative electrode layers, respectively. The insulating layer supports the positive and negative electrode current collecting units from at least one side. Two conductive units electrically connecting each of the positive and negative electrode current collecting units to an external wiring are formed in the insulating layer.

Disclosed are an anode-free all-solid-state battery which may operate at low temperature conditions, such as room temperature, and a method manufacturing the same. The anode-free all-solid-state battery may have uniformly deposited lithium during charging and inhibit the growth of lithium dendrites.

Hybrid catalyst suitable for use in a proton exchange membrane fuel cell and method of preparing same. In one embodiment, the hybrid catalyst is iron-free and includes an Mn—N—C support and platinum-containing nanoparticles that are dispersed on the Mn—N—C support. The Mn—N—C support preferably comprises atomically dispersed and nitrogen coordinated MnN.sub.4 moieties and has a particle size of about 30 to 200 nm. The platinum-containing nanoparticles preferably have a particle size ranging from about 2 to 8 nm and are made of platinum or a platinum-cobalt intermetallic alloy, such as a cubic L1.sub.2 Pt.sub.3Co alloy or a tetragonal L1.sub.0 PtCo alloy. The hybrid catalyst may be made by combining a quantity of a hexachloroplatinic acid solution with a quantity of an Mn—N—C support, sonicating the mixture in an ice bath, freeze-drying the sonicated product, calcinating the freeze-dried product under a forming gas, and heating the calcinated product.

A slurry composition for coating a secondary battery separator, a separator prepared using the same, and a secondary battery including the separator, wherein the slurry composition includes a phenolic compound including two or more aromatic rings, inorganic particles, a binder, and a solvent.