SILICON-BASED ANODE WATER-SOLUBLE BINDER, PREPARATION METHOD AND APPLICATION THEREOF

A silicon-based anode water-soluble binder, a preparation method and an application thereof are provided. Raw materials of the silicon-based anode water-soluble binder of include a high molecular polymer and a low-molecular-weight organic acid. Taking the low-molecular-weight organic acid as a crosslinking agent, the silicon-based anode water-soluble binder can form a mutually crosslinked network structure by simultaneous polymerization of covalent ester bonds and non-covalent hydrogen bonds through in-situ esterification, providing more active sites for silicon anode and bonding, effectively inhibiting the volume expansion of the silicon anode during the charge-discharge cycle, further improving the electrochemical performance of the lithium-ion battery, and building a crosslinking network structure with multi-gradient energy dissipation, and then the prepared negative electrode pole piece and secondary battery have excellent electrochemical performance.