表面改性对超级电容器正极材料性能的影响

Effect of Surface Modification on Properties of Positive Electrode Materials for Supercapacitors

采用(甲基二茂铁)十二烷基二甲基溴化铵表面活性剂对超级电容器正极材料(镍钴硫化物(NCS))进行表面改性。通过对改性前后NCS材料性能测试,探究NCS表面性质改变对材料电化学性能的影响,结果表明,环己烷溶液中改性的NCS材料在充放电时间、电荷转移能力及离子扩散速率上有所提高,表面活性剂的定向排列改善了NCS材料-电解液的界面动力学,提高了材料的充放电性能。该研究有望为其他领域的电化学储能研究和超级电容器的改良和探索提供探索性思路,具有广泛的应用前景。

The supercapacitor cathode material(NCS)was modified by using(methylferrocene)dodecyl dimethyl ammonium bromide surfactant.By testing the properties of NCS materials before and after modification,the influence of the change of NCS surface properties on the electrochemical properties of the materials was explored.The results showed that the charge and discharge time,charge transfer ability and ion diffusion rate of the modified NCS in cyclohexane solution were improved.The directional arrangement of surfactants improved the interfacial dynamics of NCS material and electrolyte,and the charge and discharge performance of the material was improved.This research is expected to provide exploratory ideas for other fields of electrochemical energy storage research and the improvement and exploration of supercapacitors,and has a wide range of application prospects.