A main object of the present disclosure is to provide a cathode active material capable of suppressing the reaction with a solid electrolyte. The present disclosure achieves the object by providing a coated cathode active material comprising: a cathode active material, and a coating portion coating at least a part of a surface of the cathode active material, and the coating portion includes a scandium lithium phosphate based compound or a lithium borate based compound.

The invention relates to a method for manufacturing a solid-state battery (2) comprising the steps of preparing (100) a cathode (4), preparing (400) an anode (6), and preparing (200) a solid-state electrolyte (8) to be disposed between the cathode (4) and the anode (6), wherein the solid-state electrolyte (8) is prepared by means of a coating process, wherein the coating process comprises PVD coating.

The present disclosure relates to the technical field of energy storage, and in particular, relates to a positive electrode, a method for preparing the positive electrode and an electrochemical device. The positive electrode includes a current collector and a positive electrode active material layer that contains positive electrode active material and is arranged on at least one surface of the current collector. An inorganic layer having a thickness of 20 nm to 2000 nm is arranged on the surface of the at least one positive electrode active material layer away from the current collector. The inorganic layer is a porous dielectric layer containing no binder, and the inorganic layer has a porosity of 10%˜60%. The positive electrode active material layer according to the present disclosure significantly improves the cycle performance, high-temperature storage performance and safety of the electrochemical device.

Methods, systems, and apparatuses for coating flexible substrates are provided. A coating system includes an unwinding module housing a feed reel capable of providing a continuous sheet of flexible material, a winding module housing a take-up reel capable of storing the continuous sheet of flexible material, and a processing module arranged downstream from the unwinding module. The processing module includes a plurality of sub-chambers arranged in sequence, each configured to perform one or more processing operations to the continuous sheet of flexible material. The processing module includes a coating drum capable of guiding the continuous sheet of flexible material past the plurality of sub-chambers along a travel direction. The sub-chambers are radially disposed about the coating drum and at least one of the sub-chambers includes a deposition module. The deposition module includes a pair of electron beam sources positioned side-by-side along a transverse direction perpendicular to the travel direction.

Disclosed herein is a smart wearable lens mounted with an all-solid-state thin film secondary battery including a flexible substrate, a cathode current collector, a cathode, a solid electrolyte, an anode, and an anode current collector. The smart wearable lens mounted with the all-solid-state thin film secondary battery may be stably and continuously supplied with power and has a low self-discharge rate. In addition, the smart wearable lens may minimize aversion when humans are wearing the smart wearable lens and be suitably used for a curved lens, especially a micro-lens such as a contact lens.

An all-solid-state secondary battery having a higher level of safety than a conventional lithium-ion secondary battery using an electrolyte solution, specifically, a thin-film-type solid-state secondary battery, and a manufacturing method thereof are provided. As a solid electrolyte, a mixed material obtained by co-evaporation of SiO and an organic complex of lithium is used. That is, a solid electrolyte layer formed using a mixed material of an inorganic material and an organic material is used in a solid-state secondary battery. The ratio of oxygen to silicon in the solid electrolyte layer is higher than 1 and lower than 2.

Provided is a core/shell composite that includes a core portion containing a heat resistant material selected from an inorganic oxide, a ceramic, a mineral and the like and having rigidity, and at least one layer of shell portion containing a hydrogen absorbing/desorbing metal covering the entire or a part of the core portion. The heat resistant material contained in the core portion has a melting point higher than the highest melting point among the hydrogen absorbing/desorbing metal contained in the shell portion. In a method for producing the core/shell composite, the core portion is covered with the shell portion by deposition in the absence of oxygen.

TA negative electrode, a secondary battery including the same, and a method of preparing the negative electrode are provided. The negative electrode, which includes a current collector; a negative electrode active material layer disposed on the current collector; a first layer disposed on the negative electrode active material layer and including Li; and a second layer disposed on the first layer and including an inorganic material is provided. A loading amount of the first layer may satisfy Equation 1:
0.65×(x.sub.1−y.sub.1)<loading amount of the first layer<0.95×(x.sub.1−y.sub.1).  [Equation 1]

There is provided a solid-state battery layer structure which may include an anode current collector metal layer, an anode layer arranged on the anode current collector metal layer, a solid electrolyte layer arranged on the anode layer laterally, a cathode layer arranged on the solid electrolyte layer, and a cathode current collector metal layer, and a plurality of nanowire structures comprising silicon and/or gallium nitride, wherein said nanowire structures are arranged on the anode layer and, wherein said nanowire structures are laterally and vertically enclosed by the solid electrolyte layer, wherein the anode layer comprises silicon and a plurality of metal vias connecting the plurality of nanowire structures with the anode current collector metal layer. Methods for producing solid-state battery layer structures are also provided.

A method and apparatus for forming metal electrode structures, more specifically lithium-containing anodes, high performance electrochemical devices, such as primary and secondary electrochemical devices, including the aforementioned lithium-containing electrodes. In one implementation, the method comprises forming a lithium metal film on a current collector. The current collector comprises copper and/or stainless steel. The method further comprises forming a protective film stack on the lithium metal film, comprising forming a first protective film on the lithium metal film. The first protective film is selected from a bismuth chalcogenide film, a copper chalcogenide film, a tin chalcogenide film, a gallium chalcogenide film, a germanium chalcogenide film, an indium chalcogenide film, a silver chalcogenide film, a dielectric film, a lithium fluoride film, or a combination thereof.