Yang, Lun Zhu, Xiaobin Xiong, Shijie Wu, Xinglong Shan, Yun Chu, Paul K. Synergistic WO<sub>3</sub>·2H<sub>2</sub>O Nanoplates/WS<sub>2</sub> Hybrid Catalysts for High-Efficiency Hydrogen Evolution Tungsten trioxide dihydrate (WO<sub>3</sub>·2H<sub>2</sub>O) nanoplates are prepared by <i>in situ</i> anodic oxidation of tungsten disulfide (WS<sub>2</sub>) film on carbon fiber paper (CFP). The WO<sub>3</sub>·2H<sub>2</sub>O/WS<sub>2</sub> hybrid catalyst exhibits excellent synergistic effects which facilitate the kinetics of the hydrogen evolution reaction (HER). The electrochromatic effect takes place via hydrogen intercalation into WO<sub>3</sub>·2H<sub>2</sub>O. This process is accelerated by the desirable proton diffusion coefficient in the layered WO<sub>3</sub>·2H<sub>2</sub>O. Hydrogen spillover from WO<sub>3</sub>·2H<sub>2</sub>O to WS<sub>2</sub> occurs via atomic polarization caused by the electric field of the charges on the planar defect or edge active sites of WS<sub>2</sub>. The optimized hybrid catalyst presents a geometrical current density of 100 mA cm<sup>–2</sup> at 152 mV overpotential with a Tafel slope of ∼54 mV per decade, making the materials one of the most active nonprecious metal HER catalysts. WS 2;proton diffusion coefficient;WO;hydrogen evolution reaction;carbon fiber paper;nonprecious metal HER catalysts;152 mV overpotential;CFP 2016-05-23
    https://acs.figshare.com/articles/journal_contribution/Synergistic_WO_sub_3_sub_2H_sub_2_sub_O_Nanoplates_WS_sub_2_sub_Hybrid_Catalysts_for_High-Efficiency_Hydrogen_Evolution/3404782
10.1021/acsami.6b04045.s001