Conversion of low molecular weight hydrogel to nitrogen-doped carbon materials and its application as supercapacitor

In this study, we use low molecular weight hydrogel as a precursor, doped with different amount of urea to change nitrogen content. We discovered that the nitrogen-doping may change the morphology of the materials after pyrolysis. We further analyzed the electrochemical properties of the N-doped porous carbon materials. The electrochemical capacitance may increase due to nitrogen-doping, but with high nitrogen content, the capacitance decreased conversely. The increase of electrochemical capacitance may relate to the content of quaternary nitrogen.Graphical abstract

Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - April 23, 2019 Category: Chemistry Source Type: research