7results about How to "Improve air stability" patented technology

This invention relates to the field of battery technology, and more particularly to a positive electrode lithium replenisher, its preparation method, a positive electrode sheet, and a lithium battery. The aforementioned positive electrode lithium replenisher includes a core and a shell, with the shell covering the surface of the core to isolate the core from the side reaction environment. The core is a lithium-rich material, specifically at least one of Li5FeO4, Li5ReO6, and Li6CoO4. The shell is cobalt boride. This core-shell structured positive electrode lithium replenisher with cobalt boride as the shell effectively coats the core material, improves the air stability of the positive electrode lithium replenisher, reduces residual alkali, and thus enhances the battery's energy density and cycle performance.

This invention provides a core-shell structured sulfide electrolyte, its preparation method, and a solid-state battery. The core-shell structured sulfide electrolyte includes a sulfide solid electrolyte and a shell layer coating the surface of the sulfide solid electrolyte; the shell layer is composed of hydrophobic silica; wherein the hydrophobic silica is obtained by hydrophobic modification of silica with a modifier; the modifier includes a coupling agent for hydrophobic modification. This core-shell structured sulfide electrolyte exhibits higher air stability and chemical stability, which is beneficial for the application of sulfide electrolytes in solid-state batteries.

This invention proposes an all-solid-state lithium-ion battery and its application. The all-solid-state lithium-ion battery includes: a positive electrode; a modified lithium-based composite negative electrode, the modifying material including metal fluorides; and a solid electrolyte membrane disposed between the positive electrode and the modified lithium-based composite negative electrode, wherein the solid electrolyte membrane includes a sulfide electrolyte with the chemical formula Li. a P 1‑b M b S c O d X e , of which 5

This application discloses a cathode material, its preparation method, and an all-solid-state battery. It includes a substrate and a first coating layer and a second coating layer sequentially coated on the surface of the substrate. The substrate is a phosphorus-doped spinel-type lithium nickel manganese oxide. The first coating layer includes an oxygen-doped halide electrolyte. The second coating layer includes an Sb / O co-doped argentite-germanium sulfide. The cathode material provided by this application has the advantage of synergistically improved structural stability, interfacial stability, and air stability.

The present application relates to thermoelectric material technical field, especially to a kind of method for improving the air stability of n-type single-wall carbon nanotube thermoelectric film.The method provided by the present application comprises the following steps: polyvinylpyrrolidone, polyvinylidene fluoride and dimethylformamide are mixed to obtain antioxidant slurry;The n-type carbon nanotube film is coated with the antioxidant slurry to obtain the n-type carbon nanotube film coated with antioxidant layer;After connecting two wires at the two ends of the n-type carbon nanotube film coated with antioxidant layer, super-hydrophobic coating is carried out to obtain n-type single-wall carbon nanotube film with super-hydrophobic and antioxidant properties.The n-type single-wall carbon nanotube film treated by the method can exist stably in a high humidity atmosphere, and has good flexibility, and is expected to be prepared into a flexible thermoelectric device for human wear with existing p-type thermoelectric film.

The application relates to a halide solid-state electrolyte as well as a preparation method and application thereof, and relates to the technical field of new energy materials. 1.5 Zr 0.5 M 0.5 Cl5O 0.5 , wherein M is Ta or Nb; and the inner core is a crystalline halide electrolyte with a chemical general formula of Li 2.5 Y 0.5 Zr 0.5 Cl 6‑4x F 4x , wherein 0.05<=x<=1.45. The halide solid-state electrolyte has high ion conductivity, high oxidation potential, high mechanical performance, good chemical stability with sulfides and high air stability.