Fabrication and Electrochemical Behavior of Monoclinic CuO and CuO/Graphite Composite Nanoparticles as Cathode in an Alkaline Zn-CuO Battery

Electrochemical properties of various rock-shaped-cuo/graphite (g) composites  and  monoclinic  structure  cuo  nanoparticles  as  the cathode  versus  a  zinc plate  as  the  anode  in  a 4m naoh  electrolyte were  elucidated  by  electrochemical  impedance  spectroscopy  (eis) and chronopotentiometry  (cp)  in a  two  electrode configuration  cell. various values of g 9, 16 and 28 wt% were prepared and studied as cathode materials  for  an  alkaline  zn-cuo battery.  the  eis  results demonstrated  that  increasing  the mass  ratio  of g  caused  significant decrease  in  charge  transfer  resistance  (rct)  and  capacitive behavior of  the  electrode.  also,  the  discharging  voltage  of  the  cells  was increased  due  to  raising  the  mass  ratio  of  the  graphite.  besides, electrochemical  properties  of  the  monoclinic  structure  cuo nanoparticles  as  cathode  material  in  the  alkaline  battery  was compared with a rock shaped cuo particles. the results showed that the discharged voltage of monoclinic cuo nanoparticles  is  less  than another rock shaped cuo nanoparticles form.