Provided is a binder for an electrode that enables production of a slurry for an electrode that has excellent dispersibility and can cause a secondary battery to display excellent output characteristics and high-temperature cycle characteristics. The binder for an electrode contains a polymer and an organic solvent. The polymer includes a structural unit derived from a monofunctional ethylenically unsaturated carboxylic acid ester monomer in a proportion of at least 45 mass % and not more than 69.9 mass %, a structural unit derived from an aromatic vinyl monomer in a proportion of at least 30 mass % and not more than 54.9 mass %, and a structural unit derived from an ethylenically unsaturated nitrile monomer in a proportion of at least 0.1 mass % and not more than 10 mass %.
本发明提供了一种电极用粘结剂,可用于生产分散性极佳的电极用浆料,并能使二次电池显示出极佳的输出特性和高温循环特性。电极粘合剂包含聚合物和有机溶剂。聚合物包括一个结构单元,该结构单元由单功能
乙烯基不饱和
羧酸酯单体衍生而来,其比例至少为 45 质量%,不超过 69.9 质量%;一个结构单元由芳香
乙烯基单体衍生而来,其比例至少为 30 质量%,不超过 54.9 质量%;以及一个结构单元由
乙烯基不饱和腈单体衍生而来,其比例至少为 0.1 质量%,不超过 10 质量%。