Elucidating Evidence for the In Situ Reduction of Graphene Oxide by Magnesium Hydride and the Consequence of Reduction on Hydrogen Storage

The current study highlights important information regarding how graphene oxide (GO) additive interacts with magnesium hydride (MgH2) and transforms to reduced (rGO). A mild reduction occurs during mechanical milling itself, whereas a strong of GO happens concurrently the oxidation Mg formed dehydrogenation MgH2. Owing in situ transformation rGO, temperature MgH2 reduces by about 60 °C, hydrogen ab/desorption reaction kinetics increases two orders magnitude activation energy decreases 20 kJ/mol. We have thoroughly scrutinized rGO differential scanning calorimetry (DSC), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy atomic force microscopy (AFM) techniques. Interestingly, triggered further paves way for facile preparation rGO- MgO-decked composites, which are materials storage applications.