Co_(2)P_(4)O_(12)/NF纳米线阵列的制备与电解水性能研究  

Co_(2)P_(4)O_(12)/NF nanowire arrays for water splitting in an alkaline environment

作　　者：张卫国[1,2] 卢宜鹏 王宏智 姚素薇[1] ZHANG Weiguo;LU Yipeng;WANG Hongzhi;YAO Suwei(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China;Tianjin University of Sport,Tianjin 301617,China)

机构地区：[1]天津大学化工学院,天津300350 [2]天津体育学院,天津301617

出　　处：《化学工业与工程》2023年第2期17-24,共8页Chemical Industry and Engineering

摘　　要：以CoCl_(2)·6H_(2)O为原料,通过溶剂热法和磷化工艺在泡沫镍表面构建Co_(2)P_(4)O_(12)阵列,Co_(2)P_(4)O_(12)纳米线直径约200 nm。采用SEM、TEM和XRD进行形貌和晶体学特性表征,并利用三电极体系在碱性环境下测量电化学性能。在析氢过程中,只需要122 mV过电位就能达到10 mA·cm^(-2)电流密度。析氧过程中,仅需要334 mV的过电位就能达到15 mA·cm^(-2)电流密度。组装的电解池在15 mA·cm^(-2)的电流密度下工作40 h后电解槽电压没有发生明显变化,展现出很好的稳定性。Co_(2)P_(4)O_(12)/NF是一种有潜力的双功能催化剂。Co_(2)P_(4)O_(12)array was constructed on the surface of nickel foam by solvothermal method and phosphating at 300 ℃ using CoCl_(2)·6H_(2)O as raw material. The diameter of Co_(2)P_(4)O_(12)nanowires is about 200 nm. SEM, TEM and XRD were used to characterize the morphology and crystallographic characteristics, and a three-electrode system was constructed to measure the electrochemical performance in alkaline environment. In the process of hydrogen evolution, only 122 mV overpotential is needed to achieve a current density of 10 mA·cm^(-2). In the process of oxygen evolution, only 334 mV of overpotential is needed to reach the current density of 15 mA·cm^(-2). The assembled electrolytic cell works for 40 h at the current density of 15 mA·cm^(-2), and the cell voltage didn’t change significantly, showing good stability. The above tests proved that Co_(2)P_(4)O_(12)/NF is a potential bifunctional catalyst.

关 键 词：Co_(2)P_(4)O_(12) 纳米线阵列 析氢过程 析氧过程 双功能催化剂 

分 类 号：TQ116.21[化学工程—无机化工]