Hydrogen Desorption Properties of MgH2 + 10 wt% SiO2 + 5 wt% Ni Prepared by Planetary Ball Milling

MgH2 is a very hopeful material for application as hydrogen storage in the solid form. This due to its reversibility and ability store large amounts of hydrogen, which 7.6 wt%. However, this still has weaknesses, namely high operating temperature slow kinetic reactions. Various attempts have been made overcome weakness, including downsizing adding catalyst. In study, double catalyst was used, natural silica extracted from rice husk ash nickel nano powder, with composition + 10 wt% SiO2 5 Ni. The purpose research study effect using these catalysts thermodynamic properties MgH2. Samples were prepared by High Energy Ball Milling (HEBM), variations milling time 1, 5, 10, 15 hours. X-ray Diffraction (XRD) pattern showed presence an impurity phase samples milled It also reduction grain size increasing time. agglomeration occurred From Scanning Electron Microscope (SEM) results can be seen that sample longer time, homogeneously distribute. Thermal investigation lowest desorption achieved hours, 287 °C 288 °C. shows plays role improving characteristics MgH2, while Ni Copyright © 2021 Authors, Published BCREC Group. open access article under CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).