The present invention aims to provide a binder for a power storage device electrode which exhibits thermal energy stability over a wide temperature range covering from a high-temperature condition to a low-temperature condition when used as a binder for a power storage device electrode, and which enables production of a high-capacity storage battery with a small irreversible capacity and low resistance to have excellent output characteristics. The present invention also aims to provide a binder for a power storage device electrode which is excellent in dispersibility of an active material and adhesiveness, which improves the flexibility of an electrode to be obtained, and which has high resistance against electrolytes to enable production of a high-capacity storage battery even when the added amount thereof is small. The present invention further aims to provide a composition for a power storage device electrode, a power storage device electrode, and a power storage device each prepared using the binder for a power storage device electrode. The present invention relates to a binder for a power storage device electrode used for an electrode of a power storage device, the binder including a polyvinyl acetal resin, the polyvinyl acetal resin having a meso/racemo ratio of an acetal ring structure of 10 or higher and a hydroxy group content of 30 to 60 mol%.
本发明旨在提供一种动力储存装置电极用粘结剂,当用作动力储存装置电极用粘结剂时,该粘结剂在从高温条件到低温条件的宽温度范围内表现出热能稳定性,并且能够生产出不可逆容量小且电阻低的高容量储存电池,从而具有优异的输出特性。本发明的另一个目的是提供一种用于动力储存装置电极的粘合剂,它在活性材料的分散性和粘合性方面都很出色,可以提高所获得电极的柔韧性,并且对电解质具有很高的电阻,即使添加量很少,也能生产出高容量的蓄电池。本发明的进一步目的是提供一种用于储能装置电极的组合物、一种储能装置电极和一种储能装置,每种储能装置电极都是使用用于储能装置电极的粘结剂制备的。本发明涉及一种用于功率存储设备电极的功率存储设备电极粘结剂,该粘结剂包括聚
乙烯醇缩醛树脂,聚
乙烯醇缩醛树脂的
缩醛环结构的中/外模比为 10 或更高,羟基含量为 30 至 60 摩尔%。