Ni_(2)P/ppy/rGO复合材料的制备及析氧性能  

Preparation and oxygen evolution performance of Ni_(2)P/ppy/rGO composites

作　　者：徐海升[1,2,3] 刘佳欣 薛媚月 丁丽芹 李善建[1] XU Haisheng;LIU Jiaxin;XUE Meiyue;DING Liqin;LI Shanjian(College of Chemistry and Chemical Engineering,Xi′an Shiyou University,Xi′an 710065,China;Shaanxi Engineering Research Center of Green Low-carbon Energy Materials and Processes,Xi′an 710065,China;Xi′an Key Laboratory of Low-carbon Utilization for High-carbon Resources,Xi′an 710065,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]陕西省绿色低碳能源材料与过程工程技术研究中心,陕西西安710065 [3]西安市高碳资源低碳化利用重点实验室,陕西西安710065

出　　处：《高校化学工程学报》2025年第1期149-156,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：陕西省自然科学基础研究计划(2023-JC-YB-118),西安石油大学研究生创新与实践能力培养计划(YCS23213082)。

摘　　要：为了设计和开发一种经济高效的析氧反应(OER)催化剂,采用化学氧化法和水热法等方法,使用聚吡咯(ppy)对还原氧化石墨烯(rGO)进行功能化改性,再结合磷化镍(Ni_(2)P),制备Ni_(2)P/ppy/rGO催化剂。运用X射线衍射(XRD)、扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)对材料进行结构和形貌表征,再通过电化学测试研究了催化剂的析氧反应性能。结果表明,Ni_(2)P/ppy/rGO具有良好的电催化性能,在电流密度为10 mA·cm^(-2)时,需要的过电势(258 mV)较小,表现出比ppy/rGO(319 mV)、Ni_(2)P/ppy(323 mV)更好的电催化析氧性能。Ni_(2)P/ppy/rGO催化剂相应的塔菲尔斜率(74.0 mV·dec^(-1))也较小,表明其在析氧反应中具有较好的催化动力学性能。In order to design and develop an economical and efficient catalyst for oxygen evolution reaction(OER),the reduced graphene oxide(rGO)was functionalized by polypyrrole(ppy)and combined with nickel phosphide(Ni_(2)P)to prepare a Ni_(2)P/ppy/rGO catalyst.X-ray diffraction(XRD),scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS)were used to characterize the structure and morphology of the catalyst.The results show that Ni_(2)P/ppy/rGO has good electrocatalytic performance.When the current density is 10 mA·cm-2,the required overpotential(258 mV)is smaller,which shows better electrocatalytic oxygen evolution performance than ppy/rGO(319 mV)and Ni_(2)P/ppy(323 mV).The corresponding Tafel slope(74.0 mV·dec^(-1))of the Ni_(2)P/ppy/rGO catalyst is also small,which indicates that the Ni_(2)P/ppy/rGO catalyst has good catalytic kinetic performance in oxygen evolution reaction.

关 键 词：石墨烯 聚吡咯 磷化镍 析氧反应 阻抗 

分 类 号：TQ116.2[化学工程—无机化工]