Electrocatalytic water splitting is an effective approaches of generating hydrogen with high purity,which attracts tremendous attention.As one of the half reaction of water splitting,Hydrogen Evolution Reaction(HER)is highly depended on the electrocatalyst to enhance the efficiency of H2 production[1].Currently,commercial Pt/C is considered as the most practical catalyst,however,the weak interaction between the Pt and carbon results in poor stability.[2,3] In persuit of stronger interaction between the Pt and the support to achieve a better dispersion state,in this work,we fabricate a novel molybdenum-doped titanium oxide(Ti0.9Mo0.1O2)as the support to anchor Pt particles with low loading of 5 wt%.The Pt/Ti0.9Mo0.1O2 catalyst is prepared through a facile hydrothermal method to obtain oxide support followed by an impregnation-reduction method to anchor Pt.The Pt particles are uniformly deposited on the support and the average size is about 2-3 nm(Fig.1b).This material exhibit comparable activity but 2.6 times higher mass activity and more excellent durability over 10,000 cycles to the state-of-the-art Pt/C catalyst(Fig.1c-f).The strong metal to support interaction(SMSI)between the Pt and the Ti0.9Mo0.1O2 enhance the dispersion of the catalyst particle,thus improving the utilization of the Pt and achieving excellent stability(Fig.1a).