A purpose of the present invention is to provide a binder composition for a secondary battery which can impart excellent battery characteristics, even when the heat treatment temperature is low. The binder composition for a secondary battery according to the present invention is characterized by comprising a polyamic acid comprising a repeating unit represented by chemical formula (1) and an aromatic compound comprising an electron donating group and an organic acid group,
wherein A is a tetravalent group obtained by removing acid anhydride groups from a tetracarboxylic dianhydride, B is a divalent group obtained by removing amino groups from a diamine, and at least one of A and B is an aliphatic group.
本发明的目的是提供一种用于二次电池的粘结剂组合物,该组合物即使在热处理温度较低的情况下也能提供优异的电池特性。根据本发明的二次电池粘结剂组合物,其特征在于包含一种由化学式(1)代表的重复单元组成的聚酰胺酸和一种由电子捐赠基团和有机酸基团组成的芳香族化合物、
其中 A 是通过从四羧酸二酐中去除酸酐基团而得到的四价基团,B 是通过从二胺中去除氨基而得到的二价基团,A 和 B 中至少有一个是脂肪族基团。
Takahashi, Teruo; Togashi, Shigeo; Morishita, Muneo, Chemical and pharmaceutical bulletin, 1982, vol. 30, # 8, p. 3020 - 3023
An object of the present invention is to provide a polyimide binder which can be prepared under lower temperature conditions. The binder composition for a secondary battery of the present invention is characterized in comprising a polyamic acid and an aromatic compound comprising an electron donating group and an organic acid group.