An object of the present invention is to provide a dispersant for a resin current collector which can uniformly disperse a conductive filler to attain sufficient charge and discharge characteristics without impairing the output power per unit weight of a battery enhanced by a reduction in the weight of a resin current collector as a feature of the resin current collector, a material for a resin current collector, and a resin current collector. The present invention provides a dispersant for a resin current collector comprising a polymer having a resin-philic block (A1) and a conductive filler-philic block (A2), wherein the resin-philic block (A1) is a polymer block composed of an olefin (a1) having 2 to 30 carbon atoms as an essential constituent monomer and a functional group contained in the conductive filler-philic block (A2) is at least one selected from the group consisting of a carboxyl group, a 1,3-dioxo-2-oxapropylene group, an ester group, a cyano group, a hydroxyl group, an amino group, an amide group, and an imide group, or the polymer having the resin-philic block (A1) and the conductive filler-philic block (A2) is a ring-opening polymerization type polyester, a dehydration condensation type polyester, or a polycarbonate.
本发明的目的是提供一种用于
树脂电流收集器的分散剂,该分散剂可均匀分散导电填料,以获得足够的充放电特性,同时不影响通过减少
树脂电流收集器的重量而增强的电池单位重量输出功率,作为
树脂电流收集器、
树脂电流收集器材料和
树脂电流收集器的特征。本发明提供了一种用于
树脂电流收集器的分散剂,该分散剂由具有
树脂亲
水嵌段(A1)和导电填料亲
水嵌段(A2)的聚合物组成,其中
树脂亲
水嵌段(A1)是由具有 2 至 30 个碳原子的烯烃(a1)作为基本组成单体构成的聚合物嵌段,导电填料亲
水嵌段(A2)中包含的官能团至少选自羧基组成的组、或具有
树脂亲
水嵌段(A1)和导电填料亲
水嵌段(A2)的聚合物是开环聚合型聚酯、脱
水缩合型聚酯或聚
碳酸酯。