Provided herein are an all-solid-state battery having an intermediate layer including a metal and a metal nitride, and a method for manufacturing the same.

The present disclosure relates to rollers such as nip rollers and calendering rollers with a coating and a method of applying the coating. More specifically, the present disclosure relates to a nip roller or a calender roller with a hardening layer applied to the surface to prevent damage from contaminants.

An anode interlayer including a composite, the composite including: a first metal having electrochemical reactivity to lithium; and a second metal having no electrochemical reactivity to lithium, wherein the second metal has a non-spherical structure, and the first metal is disposed on at least one surface of the second metal.

An anode for an energy storage device includes a current collector. The current collector includes: i) an electrically conductive substrate including a first electrically conductive material; ii) a plurality of electrically conductive structures in electrical communication with the electrically conductive substrate, wherein each electrically conductive structure includes a second electrically conductive material; and iii) a metal oxide coating. The metal oxide coating includes one or both of: a) a first metal oxide material in contact with the electrically conductive substrate; or b) a second metal oxide material in contact with the electrically conductive structures; or both (a) and (b). The anode further includes lithium storage coating overlaying the metal oxide coating, the lithium storage layer including a total content of silicon, germanium, or a combination thereof. The electrically conductive structures are at least partially embedded within the lithium storage coating. Methods of making the anode are described.

Disclosed herein is a process for manufacturing a coated cathode active material. The process includes (a) providing a particulate electrode active material according to general formula Li.sub.1+xTM.sub.1−xO.sub.2, where TM includes Ni and optionally Co and/or Mn, optionally Al, Mg, and/or Ba, and transition metals other than Ni, Co, and Mn, and where x is between zero and 0.2, (b) treating said particulate electrode active material with an aqueous solution or slurry such that at least one element selected from Al, Sb, B, Mo, W, Si and P is deposited on the surface of said particulate electrode active material, (c) removing the water by filtration, (d) adding an aqueous solution of a compound of Al, B, or Sb to the solid residue obtained from step (c), thereby depositing Al, B, and/or Sb on the surface of said solid residue, and (e) treating the residue obtained from step (d) thermally.

Provided is an electrode mixture used for an all-solid-state sodium storage battery that can maintain a high discharging capacity in a room temperature environment and exhibit excellent charge-discharge cycle characteristics. Further provided is a storage battery comprising the same. An object of the present invention is to provide an electrode mixture used for an all-solid-state sodium storage battery, the electrode mixture comprising an active material, wherein the active material is a cluster formed of polyphosphate acid transition metal oxide with a plurality of individual particles connected together, each particle having a particle size within the range of 0.1 μm to 100 μm.

Systems and methods for pulverization mitigation additives for silicon dominant anodes may include an electrode including a metal current collector and an active material layer on the current collector. The active material layer may include islands of material separated by cracks, with the islands including, at least, silicon and conductive additives. At least a portion of the additives may extend from within the islands and bridge the cracks of the active material layer. The conductive additives may form a structure providing electrical conductivity between a first island and a second island, or between at least one island and the metal current collector. The additives may include between 1% and 40% of the active material layer. The active material layer may include between 20% to 95% silicon. The conductive additives may include carbon nanotubes and/or graphene sheets.

The electrical resistance of active cathodic and anodic films may be significantly reduced by the addition of small fractions of conductive additives within a battery system. The decrease in resistance in the cathode and/or anode leads to easier electron transport through the battery, resulting in increases in power, capacity and rates while decreasing joules heating losses.

The present invention relates to a solid ion conductor compound represented by Li.sub.aM.sub.xT.sub.yP.sub.bS.sub.cCl.sub.dX.sub.e and having an argyrodite crystal structure, a solid electrolyte including the same, and an electrochemical cell including the same.

A method of preparing a positive electrode active material is disclosed herein. The method may ensure surface and coating uniformity of first and second lithium transition metal oxides in the positive electrode active material. In some embodiments, the method includes washing a mixture of a first lithium transition metal oxide having a first Brunauer-Emmett-Teller (BET) specific surface area and a second lithium transition metal oxide having a second BET specific surface area with a washing solution, an amount of the washing solution based on 100 parts by weight of the mixture satisfies Equation 1: 5,000×(x1w1+x2w2)≤the amount of the washing solution ≤15,000×(x1w1+x2w2), x1 and x2 are the first and second BET specific surface areas, respectively, and w1 and w2 are weight ratios of the first and second lithium transition metal oxides based on a total weight of the mixture, respectively.