Binder composition for non-aqueous secondary battery, production method for binder composition for non-aqueous secondary battery, slurry composition for non-aqueous secondary battery electrode, electrode for non-aqueous secondary battery, and non-aqueous secondary battery

• Main Authors: AKABANE TETSUYA, KIDOKORO HIROTO, HOTTA KARIN
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention provides a binder composition for a non-aqueous secondary battery electrode. The binder composition makes it possible to form an electrode that has excellent peel strength and asecondary battery that has excellent cycle characteristics. The binder composition contains: a particulate polymer that comprises a graft polymer that has a hydrophilic graft chain; and a hindered phenol antioxidant. The particulate polymer is formed by graft polymerizing a total of 1-40 parts by mass of a hydrophilic monomer and/or a macromonomer onto 100 parts by mass of core particles that include a block copolymer that contains aromatic vinyl block regions that comprise an aromatic vinyl monomer unit and isoprene block regions that comprise an isoprene unit, the proportion of isoprene block regions being 70-99 mass%. 本发明提供一种能够形成剥离强度优异的电极和循环特性优异的二次电池的非水系二次电池电极用粘结剂组合物。非水系二次电池电极用粘结剂组合物含有颗粒状聚合物和受阻酚系抗氧化剂，上述颗粒状聚合物包含具有亲水性接枝链的接枝聚合物，该具有亲水性接枝链的接枝聚合物是使合计为1质量份以上且40质量份以下的亲水性单体和/或大分子单体与100质量份的核颗粒进行接枝聚合反应形成的，该核颗粒包含嵌段共聚物，该嵌段共