The surface admittances calculated from electrochemical impedance spectra are used to analyze the surface states of X-MoS₂ (X=Fe, Co, Ni) prepared on graphite felt. Because of the semiconducting properties of Fe-MoS₂ at the electrolyte-semiconductor interface, the bifunctional catalytic properties in the hydrogen/oxidation evolution reactions (HER/OER) are enhanced as a result of better surface adsorption/desorption and slow-changing surface conductance. The surface morphology and electric field between the semiconductor and electrolyte are important parameters affecting the surface properties in HER/OER.

中文翻译：

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在石墨毡上制备的 X-MoS2（X = Fe、Co、Ni）的表面电导分析作为氢/氧化反应的双功能催化剂

从电化学阻抗谱计算的表面导纳用于分析在石墨毡上制备的 X-MoS ₂ (X=Fe, Co, Ni) 的表面状态。由于 Fe-MoS ₂在电解质-半导体界面的半导体特性，氢/氧化反应 (HER/OER) 中的双功能催化性能由于更好的表面吸附/解吸和缓慢变化的表面电导而得到增强. 半导体和电解质之间的表面形貌和电场是影响 HER/OER 表面性质的重要参数。