SULFONATED POLYMER APPLIED TO LITHIUM BATTERY ELECTRODE AS BINDER

A sulfonated polymer applied to a lithium battery electrode as a binder and a lithium battery electrode prepared by a corresponding method, wherein the sulfonated polymer is used as a binder in the electrode slurry for preparing the lithium battery electrode. The obtained lithium battery electrode is used for assembling a lithium battery, and the lithium battery has a relatively long charge-discharge cycle lifetime and can operate steadily under a very high current density. The sulfonated polymer with a sulfonic acid group has an excellent capacity of transferring lithium ions, so that the lithium ions can be rapidly transmitted back and forth between an electrode active material and an electrolyte solution, and a lithium battery which can run steadily under the rapid charge-discharge condition can be obtained. The sulfonated polymer is sufficient in adhesive force and binding strength as a binder, adheres the electrode active material and a conductive medium onto a current collector, and is not easy to fract