US 2023/0141574 A1 · method for preparing a porous polymeric film material under high voltage and with high safety and a solid-state lithium battery using the porous polymeric film material

Abstract

The present invention provides a method for preparing a porous polymeric film material under high voltage and with high safe da solid-state lithium battery using the porous polymeric film material. The method comprises steps of dissolving a polymer in which lithium ions are movable in an organic solvent, and heating and stirring the organic solvent with the polymer to obtain a solution; adding a lithium salt to the solution and then heating and stirring the solution; coating the solution on a substrate and then baking the substrate; and removing the substrate to obtain a film after the substrate is baked, and then vacuum-drying the film to obtain the porous polymeric film material. The porous polymeric film material is provided between a positive electrode material layer and a negative electrode material layer to obtain a solid-state lithium battery structure.

Claims9

Dependent claims

A method for preparing a porous polymeric film material under high voltage and with high safety, comprising:

a step a, dissolving a polymer in which lithium ions are movable in an organic solvent, and heating and stirring the organic solvent with the polymer to obtain a solution;
a step b, adding a lithium salt to the solution and then heating and stirring the solution;
a step c, coating the solution on a substrate and then baking the substrate;
and
a step d, removing the substrate to obtain a film after the substrate is baked, and then vacuum-drying the film to obtain the porous polymeric film material.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/523,318Filed 10 Nov 2021

Published

11 May 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01M 50/446
Separators, membranes or diaphragms characterised by the material: composite material consisting of a mixture of organic and inorganic materials
H01M 10/052
Accumulators with non-aqueous electrolyte: li-accumulators
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/0565
The electrolyte being constituted of organic materials only: polymeric materials, e.g. gel-type or solid-type

method for preparing a porous polymeric film material under high voltage and with high safety and a solid-state lithium battery using the porous polymeric film material

Life of this patent

method for preparing a porous polymeric film material under high voltage and with high safety and a solid-state lithium battery using the porous polymeric film material

Life of this patent

Abstract

Claims9