The present invention discloses a binder for electrochemical device comprising a non-conjugated polymer linked with a redox active moiety, wherein the non- conjugated polymer is selected from poly(2-ethyl-2-oxazoline), vinyl polymer, polyurethane polymer, zwitterionic polymer, polythiourea polymer and a combination  thereof and the redox active moiety is selected from ferrocene, anthraquinone and a combination thereof, wherein the non-conjugated polymer is linked with redox  active moiety by carbonyl linkage, carbamate linkage, amide linkage, N-substitution or hexamethylene group and comprises of amide functionality, and optionally a  host compound selected from cyclodextrin, azido cyclodextrin, calix(n)arene derivative, cucurbit(7)uril derivative, polyethylene glycol polymer and a combination  thereof. The present invention further discloses a process for preparation thereof of the binder, an electrode comprising the binder and an electrochemical cell or a  battery comprising the binder of the present invention. The present invention discloses the non-conjugated polymer linked with redox active moiety which can act as  binder and electrocatalyst in the batteries. The battery with the binder of present invention showed the best-known performance of a stable specific capacity beyond  1000 charge-discharge cycles.