Negative electrode material, negative electrode slurry, negative electrode plate and lithium ion battery

In order to overcome a problem of volume expansion of an existing negative electrode active material during charging and discharging, the invention provides a negative electrode material, which comprises a negative electrode active material and a binder, wherein the binder comprises modified polyacrylamide as shown in a structural formula 1, m, n and i are independently selected from integers greater than or equal to 1, and X is selected from hydroxyl-containing monomer chain segments. Meanwhile, the invention further discloses negative electrode slurry, a negative electrode plate and a lithium ion battery which comprise the negative electrode material. The negative electrode material provided by the invention can significantly reduce the expansion rate of the negative plate and improve cycle performance and the energy density of the lithium ion battery. 为克服现有负极活性材料在充放电时存在体积膨胀的问题，本发明提供了一种负极材料，包括负极活性材料和粘结剂；所述粘结剂包括如结构式1所示的改性聚丙烯酰胺：其中，m、n、i各自独立地选自大于或等于1的整数，X选自含有羟基的单体链段。同时，本发明还公开了包括上述负极材料的负极浆料、负极片和锂离子电池。本发明提供的负极材料