Preparation of Core-Shell CQD@PANI Nanoparticles and Their Electrochemical Properties.

In recent years, carbon quantum dots (CQDs) have been extensively investigated in many fields because of their un-comparable and unique properties. However, the application of CQDs in electrochemical field meets a big challenge due to their low specific capacitance. It is very important to improve the electrochemical performance of CQDs. In this study, a facile synthesis method was developed to construct CQD@PANI nanoparticles. The CQD@PANI nanoparticles were prepared via a precise quantitative adsorption polymerization method. TEM results showed the PANI shell thickness could be adjusted by controlling the addition amount of aniline. Cyclic voltammetry and galvanostatic charge/discharge results showed that the electrochemical properties of CQDs have been significantly improved by coating PANI.