redox reactions that occur at the electrodes of batteries require transport of both ions and electrons to the active centers . reported is the synthesis of a block copolymer that exhibits simultaneous electronic and ionic conduction . a combination of grignard metathesis polymerization and click reaction was used successively to synthesize the block copolymer containing regioregular poly and poly segments . the p3ht - peo / litfsi mixture was then used to make a lithium battery cathode with lifepo 4 as the only other component . all - solid lithium batteries of the cathode described above , a solid electrolyte and a lithium foil as the anode showed capacities within experimental error of the theoretical capacity of the battery . the ability of p3ht - peo to serve all of the transport and binding functions required in a lithium battery electrode is thus demonstrated .