WATER-SOLUBLE BINDING COMPOSITION FOR SECONDARY BATTERY, MIXTURE FOR SECONDARY BATTERY ELECTRODE, ELECTRODE FOR SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

• Main Authors: OKADA HARUKI, FUJIE FUMIKO, MOMOSE HIKARU, NODONO MITSUFUMI, MATSUMOTO AKIKAZU, MOMOSE FUMINO
• Format: Patent
• Language: English; Japanese
• Published: 27.11.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a composition for a secondary battery electrode, which shows no fluctuations depending on lots and excellent storage stability and supply stability, a secondary battery electrode excellent in electrode adhesiveness and electrode flexibility, and a lithium ion secondary battery excellent in battery characteristics such as cycle characteristics.SOLUTION: A water-soluble binding composition for a secondary battery, which uses a water-soluble synthetic polymer (a) and a particulate polymer (b) that comprises a fluorine-based resin having a repeating structural unit expressed by general formula (1) shown below and is substantially insoluble with water. 【課題】ロットぶれが無く、貯蔵安定性、供給安定性に優れている二次電池電極用組成物であり、且つ、電極密着性、電極可撓性に優れた二次電池電極及びサイクル特性等の電池特性に優れたリチウムイオン二次電池の提供。【解決手段】本発明の水溶性粘着組成物は、水溶性合成高分子（ａ）及び下記一般式（１）で示される繰返し構造単位を有するフッ素系樹脂を含む実質的に水に不溶な粒子状重合体（ｂ）を用いることを特徴とする二次電池用水溶性結着性組成物である。［化１］【選択図】なし