Polymer electrolyte matrix and preparation method thereof, polymer electrolyte and lithium ion battery

• Main Authors: ZHANG XINLI, XU CHAQING
• Format: Patent
• Language: Chinese; English
• Published: 03.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a polymer electrolyte matrix, the structure of a polymer is shown as a formula (1-5) or a formula (1-6): in the formula (1-5) and the formula (1-6), R1 and R2 are H or alkyl; m and n are independently selected from integers of 1-100, and k is more than 0 and less than 1. The polymer electrolyte matrix has excellent conductivity and mechanical properties, and can meet the production and application of deformable batteries with higher capacity requirements. The invention also provides a preparation method of the polymer electrolyte matrix, a polymer electrolyte, a composite positive electrode and a lithium ion battery. 本申请提供了一种聚合物电解质基体，其中聚合物的结构如式(1-5)或式(1-6)所示：式(1-5)和式(1-6)中，R1、R2为H或烷基；m、n独立地选自1-100的整数，0＜k＜1。该聚合物电解质基体兼具优良的导电性能和机械性能，可满足具有较高容量需求的可变形电池的生产和应用。本申请还提供了该聚合物电解质基体的制备方法、聚合物电解质、复合正极和锂离子电池。