BINDER COMPOUND AND METHOD FOR PREPARING SAME

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R, R, and R each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R represents -COOM; R represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10. The binder compound of the present application has good binding property, water solubility, stable chemical property, and swelling property, and is capable of improving ion conductance of electrode sheets and reducing polarization, thereby improving battery cell performance of a secondary battery.