Significantly enhanced electrochemical hydrogen storage performance of biomass nanocomposites from Pistacia Atlantica modified by CuO nanostructures with different morphologies

Pistacia Atlantica biomass was utilized as an activated carbon precursor for the preparation of copper oxide/activated carbon (CuO/AC) nanocomposites and the electrochemical hydrogen storage (EHS) capacities of copper oxide with different morphologies and provided nanocomposites were studied. Further, the influence of copper oxide pores size upon the EHS capacity was studied through chronopotentiometry system. Under 1 mA current, the discharge capacities of CuO nanoflowers (CuO_nf), CuO nanoparticles (CuO_np), Pistacia Atlantica activated carbon (AC), copper oxide nanoflower/activated carbon (CuO_nf/AC), and copper oxide nanoparticle/activated carbon (CuO_np/AC) were reached to 650, 850, 1200, 2000, and 3000 mAh/g after 25 cycles, respectively. Outcomes reveal that the coating of copper oxide upon the AC with different pores size leads to get better discharge capacity. Therefore, produced nanostructures with inexpensive and simple manner can be utilized for EHS and can be applied as Renew. Energy to reduce the use of fossil fuels.