Investigating the role of polymeric surfactants in the morphology and electrochemical hydrogen storage performance of 4O2AlCo spinel synthesized by green chemistry method

In this work, CoAl2O4 pigments successfully were prepared via thermal decomposition method by using green tea extract as precipitating agent. The effect of PVP surfactant on morphology was investigated. The green synthesis cobalt alumina spinel was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Also the electrochemical hydrogen storage performance of CoAl2O4 in 6M KOH electrolytes under 1mA current was measured by chronopotentiometry method. The discharge capacity of CoAl2O4 and CoAl2O4 synthesized with PVP (CoAl2O4/P) surfactant after 20 cycles obtained 2000, 4100mAh/g, respectively.

کلیدواژه ها:

Hydrogen storage ، Thermal decomposition ، Pigment ، Nanostructre ، Chronopotentiometry