高性能碳纤维水下电场电极制备及其性能测量

Preparation and Performance Measurement of High Performance Underwater Carbon Fiber Electric Field Electrode

对T300碳纤维在445℃、465℃、485℃下进行表面热处理,以获得新型水下电场电极。利用X射线光电子能谱(XPS)分析、电化学工作站、自制电极响应装置和电极自噪声测量装置对其在Na Cl溶液中的表面化学状态、电化学特性和探测性能进行了测量,讨论热处理温度对其表面基团含量、循环伏安特性、交换电流密度、响应性能和电极稳定时间的影响,分析了其电场探测机理。结果表明:热处理温度的提高可提高碳纤维表面基团C=O和COOR含量,减小电极在Na Cl溶液中的电容效应,增加电极的交换电流密度,提高电极的线性性能和稳定速度。

A novel underwater electric field electrode is prepared with T300 carbon fiber heat-treated at445 ℃,465 ℃ and 485 ℃.The surface chemical state,electrochemical performance and detection performance of electric field electrode in Na Cl solution are measured using X-ray photoelectron spectroscopy（ XPS）,electrochemical workstation and self-made noise measurement system.The impact of heat treatment on surface group content,cyclic voltammetry（ CV） characteristics,exchange current density,response performance and electrode settling time is discussed.The detection mechanism of underwater carbon fiber detection electrode is analyzed.The group C=O and COOR content of carbon fiber electrode increase as the heat treatment temperature increases; the heat treatment reduces the capacitance effect of electrode,increases its exchange current density,and improve its linear performance and settling speed.