TOC of Boosting Hydrogen Storage Performance of MgH2 by Oxygen Vacancy-Rich H-V2O5 Nanosheet as an Excited H-Pump (IMAGE)

Shanghai Jiao Tong University Journal Center

TOC of Boosting Hydrogen Storage Performance of MgH2 by Oxygen Vacancy-Rich H-V2O5 Nanosheet as an Excited H-Pump

Caption

  • Graphene-like 2D V2O5 nanosheets rich in oxygen vacancies are designed as multi-functional catalysts to fabricate MgH2-H-V2O5 composites.
  • Hydrogen release starts from 185 °C and capacity retention is as high as 99% after 100 cycles at 275 °C.
  • The composites present rapid kinetics and impressive hydrogen absorption capability at near room temperature.
  • The oxygen vacancies could directly enhance kinetics of MgH2 while indirectly exciting “hydrogen pump” effect of VH2/V.

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