The present invention relates to a secondary battery negative electrode binder composition with which a stable negative electrode active material layer can be formed, which can follow volumetric changes in the negative electrode, whereby a secondary battery can be manufactured that achieves a high charge/discharge capacity and allows for improvement in charge/discharge cycle characteristics. Provided is a binder composition for fabricating a secondary battery negative electrode, containing an element capable of forming an alloy with lithium as an active material, which is a secondary battery negative electrode binder composition comprising an emulsion in which polymer particles derived from an ethylenically unsaturated monomer are dispersed in an aqueous solution of a polyvinyl alcohol-based resin, wherein the ratio of the polyvinyl alcohol-based resin/polymer particles is 60/40 to 99/1, as a weight ratio of resin solids.
本发明涉及一种二次电池负极粘结剂组合物,使用该组合物可以形成稳定的负极活性材料层,该层可以随负极的体积变化而变化,从而可以制造出具有高充放电容量并可改善充放电循环特性的二次电池。本发明提供了一种用于制造二次电池负极的粘结剂组合物,该组合物含有一种能与
锂形成合
金的元素作为活性材料,它是一种二次电池负极粘结剂组合物,该组合物包括一种乳液,在该乳液中,由
乙烯基不饱和单体衍生的聚合物颗粒分散在聚
乙烯醇基
树脂的
水溶液中,其中聚
乙烯醇基
树脂/聚合物颗粒的比例为 60/40 至 99/1(作为
树脂固体的重量比)。