POLYIMIDE COMPOUND, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES THAT USES SAID POLYIMIDE COMPOUND, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY

• Main Authors: NAKAYAMA Masashi, HIGASHIZAKI Tetsuya, GOSHIMA Toshiyuki, WIN Maw Soe, HIBINO Atsuhiko
• Format: Patent
• Language: English; French; Japanese
• Published: 29.09.2022
• 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

Provided is a polyimide that is used as an electrode material and makes it possible to markedly improve the cycle characteristics of a lithium ion secondary battery. Specifically provided is a polyimide used as an electrode material for a lithium ion secondary battery, wherein the diamine component includes an aromatic diamine compound represented by formula (1). L'invention concerne un polyimide qui est utilisé en tant que matériau d'électrode et permet d'améliorer nettement les caractéristiques de cycle d'une batterie secondaire au lithium-ion. L'invention concerne spécifiquement un polyimide utilisé en tant que matériau d'électrode pour une batterie secondaire au lithium-ion, le composant diamine comprenant un composé diamine aromatique représenté par la formule (1). リチウムイオン二次電池のサイクル特性を顕著に改善することができる電極材料として使用されるポリイミドを提供する。リチウムイオン二次電池の電極材料として使用されるポリイミドであって、ジアミン成分が、下記式（１）で表される芳香族ジアミン化合物を含む、ポリイミドとする。