二硫化钨
电化学
过渡金属
钨
材料科学
氢
纳米技术
电催化剂
金属
化学物理
化学
催化作用
冶金
电极
物理化学
生物化学
有机化学
作者
Akichika Kumatani,Hiroto Ogawa,Takahiko Endo,Yu Kobayashi,Jana Lustikova,Hiroki Ida,Yasufumi Takahashi,Tomokazu Matsue,Yasumitsu Miyata,Hitoshi Shiku
出处
期刊:Journal of vacuum science and technology
[American Vacuum Society]
日期:2023-08-10
卷期号:41 (5)
被引量:1
摘要
The ability of two-dimensional, layered transition-metal dichalcogenides (TMDs) to promote hydrogen evolution reaction (HER) has attracted much attention for hydrogen-generation applications. Their electrocatalytic active sites originally come from unique electronic properties at the edges. Here, we use scanning electrochemical cell microscopy (SECCM) to visualize and quantify the electrochemical HER activities of tungsten disulfide (WS2) islands. We show that the HER correlated current distribution is affected by the number of WS2 layers. SECCM imaging provides a direction for future designs in TMD-based electrocatalysts.
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