采用浸渍-焙烧法对活性炭(AC)进行载锆改性,选取浸渍浓度、浸渍时间和焙烧温度为影响因子,以比电容为评价指标,通过单因素和正交试验确定ZrO₂-AC电极材料的最佳制备工艺,利用BET、SEM、EDS及FT-IR对载锆前后活性炭材料进行性能表征。结果表明:ZrO₂改性活性炭的最佳工艺参数为浸渍浓度1.5mol/L,浸渍时间16h,焙烧温度500℃;活性炭负载ZrO₂后比电容增加了72.6%,比表面积降低了12.75%;ZrO₂-AC电极材料的表面及孔道出现絮状和颗粒状的ZrO₂,Zr元素的质量分数为16.8%,表面形成Zr—O键的含氧官能团。活性炭负载ZrO₂后加速了电极双电层的形成,提高了电极材料的电化学性能,可作为电吸附除盐的电极材料。

Activated carbon (AC) was experiment modified by impregnation-calcination doped ZrO₂ method.The factors including impregnation concentration,impregnation time and calcination temperature were selected.And the specific capacitance was used as the evaluation index to confirm the optimal preparation of ZrO₂-AC electrode material and characterized its properties through the single factor and orthogonal experiment.The materials were analyzed by using brunauer-emmett-tellergas adsorption method (BET),scanning electron microscopy(SEM),energy dispersive spectrometer(EDS) and fourier transform infrared spectroscopy (FT-IR).The results showed that the optimum parameters:the impregnation concentration was 1.5mol/L,the impregnation time was 16h and the calcination temperature was 500℃.The specific capacitance increased by 72.6% and the specific surface area decreased by 12.75%.The surface and pore of ZrO₂-AC showed flocculent and granular ZrO₂ particles.The weight percentage of Zr element was 16.8%.Meanwhile,Zr—O bond were found on ZrO₂-AC surface.The electrochemical performance was improved after doped ZrO₂.And it can be used as electrode material for electric adsorption technology.