Platinum-functionalized MXene serving as electron transport layer for highly efficiently catalyze dehydrogenation of AlH3 with capacity of 9.3 wt.%

•The AlH3 catalyzed by Ti3C2@Pt is prepared facilely in short time.•The initial dehydrogenation temperature is reduced 50% to 62 °C.•The hydrogen supplying performance could achieve as high as 9.3 wt%.•The catalytic activity comes from the synergy of multivalent Ti and the Pt.