Tungsten disulfide nanopowder is a high efficiency hydrogen evolution catalyst that shows good electrocatalytic activity. And it is a kind of transition metal chalcogenide compound that may replace Pt for electrochemical hydrogen production.
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The Pt catalyst is the most effective electrocatalyst and has the best catalytic cycle for hydrogen evolution currently. However, Pt has limited application in industry. That is because Pt is a precious metal catalyst. There is very little storage in nature. And it is expensive. Therefore, tungsten disulfide nanopowder has become an ideal substitute as it has good electrocatalytic activity, and the hydrogen evolution Gibbs free energy at its boundary is close to Pt. Also, WS2 has advantages of rich reserves, relatively low prices, high efficiency and durability. In other words, one of the current research focuses on obtaining hydrogen from efficient electrolysis of water is to develop high efficiency hydrogen evolution catalyst. Wherein, tungsten disulfide nanopowder is a research hotspot.
