Vulcan XC-72R掺杂的MOF衍生CoP-C制备及其电催化析氢性能

Preparation of Vulcan XC-72R-doped MOF-derived CoP-C and Its Electrocatalytic Hydrogen Evolution Performance

通过溶液浸渍法,油浴,煅烧等手段制备Vulcan XC-72R掺杂的MOF衍生CoP-C催化剂。采用扫描电子显微镜、透射电子显微镜、X-射线衍射仪、X光电子能谱等手段对MOF衍生CoP-C催化剂进行形貌、组成和结构表征。在酸性介质中进行电化学测试,结果表明:在10 mA·cm^(-2)的电流密度下,CoP-C过电位为134 mV,Tafel斜率为57 mV·dec^(-1),持续工作14 h后电流密度基本保持不变。掺杂Vulcan XC-72R、P原子填补氧空位调整催化剂电子结构和吸附特性有利于增强催化剂导电性。

Vulcan XC-72 R doped MOF-derived CoP-C catalyst was prepared by solution impregnation method, oil bath and calcination. The morphology, composition and structure of the MOF-derived CoP-C catalysts were characterized by scanning electron microscope, transmission electron microscope, X-ray diffractometer and X-ray electron spectroscopy. The electrochemical test was carried out in an acid medium. The results showed that the overpotential of CoP-C was 134 mV at a current density of 10 mA·cm^(-2)and the slope of Tafel was 57 mV·dec^(-1). The current density remained basically unchanged after 14 hours of continuous work. Doping with Vulcan XC-72 R and P atoms fill the oxygen vacancies to adjust the electronic structure and adsorption characteristics of the catalyst, which is beneficial to enhance the conductivity of the catalyst.