In this study, the carboxymethyl derivative of fenugreek gum was characterized and employed it as a water-soluble binder for silicon anodes of LIBs. Rheological characterizations of CFG solution was performed by steady shear and viscoelastic behavior as well as structural recovery tests. The electrochemical performance when applying the CFG as a binder in silicon anodes of LIBs was discussed in detailed. ACCEPTED