Lithium ion battery binder, silicon-based negative plate containing same and preparation method of silicon-based negative plate

The invention discloses a lithium ion battery binder, a silicon-based negative electrode plate containing the lithium ion battery binder, and a preparation method of the silicon-based negative electrode plate. Comprising 40-50 parts of polyacrylic acid, 30-40 parts of sodium carboxymethyl cellulose, 3-6 parts of a surfactant, 25-50 parts of water, 1-2.5 parts of hydroxypropyl distarch phosphate and 0.2-1.1 parts of a nano additive, and the silicon-based negative plate comprises the following raw materials in parts by weight: (0.3-1.5): (5-12): (0.5-1.5) of a lithium ion battery binder, a silicon-containing active material and a conductive additive; the preparation method comprises the following steps: mixing a lithium ion battery binder, a silicon-containing active material and a conductive additive in parts by weight, adding deionized water accounting for 50-70% of the weight of the mixture, and stirring to obtain negative electrode slurry; when the silicon-based negative plate is applied to the lithium ion