Synthesis, characterization, and investigation of electrochemical hydrogenstorage capacity in Hydrogel Polyvinyl alcohol /Graphene Oxide/Copper Oxide

Hydrogen is considered as one of the most renewable and also efficient fuels. When hydrogen is burned, itsonly product is water. But the most important issue in the use of hydrogen is its storage. Hydrogen must bestored reversibly in a way that is completely safe and has high storage efficiency. Due to obtaining highefficiencyhydrogen storage, new hydrogel Polyvinyl alcohol based on Graphene Oxide and functionalizedCopper Oxide nanoparticle (CuO) nanocomposite (hydrogel PVA/CuO/GO) are synthesized by employing exsituof iron ions in a hydrogel matrix. The nanocomposites are confirmed through Fourier transform infraredspectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thehydrogen storage capacity of hydrogel PVA/CuO/GO is assessed by chronopotentiometry analysis (CHP). Thisapproach was shown to have a direct impact on the morphological features and the structural order of thenanocomposites. The electrochemical consequences indicate that the hydrogel PVA/CuO/GO has a highcapacity for hydrogen storage and discharge rate. In order for a material to be a good choice for hydrogenstorage, it must repeat cycles toward shorter adsorption times, longer adsorption times, and maximumadsorption capacity in HCG. We have approached this goal for a current of ۲ mA. The results ofelectrochemical studies showed that the storage capacity of hydrogen in nanocomposites HCG increases dueto the electrochemical activity of the catalyst on ferrite.As a result, the hydrogel PVA/CuO/GO showed a goodcapacity as a promising active ingredient for hydrogen storage devices.

کلیدواژه ها:

Hydrogel Polyvinyl alcohol ، Graphene Oxide ، Hydrogen ، Copper Oxide nanoparticle ، Hydrogenstorage