The fabrication of polypyrrole/D-tartaric acid composite used as electrode in supercapacitors

摘要

Polypyrrole/b-tartaric acid composite is successfully fabricated by homogeneous coating of a polypyrrole (PPy) layer around D-tartaric acid (n-TA) nanospheres and the pyrrole (Py) quantity is adjusted. X-ray powder diffraction characterization demonstrates that the PPy is amorphous in PPy/D-TA composite, which is beneficial for ion transfer. The specific capacitance of the polypyrrole-tartaric acid electrode obtained with the ratio of [Py]/[D-TA] = 1:1 is 200 F g(-1) at a scan rate of 5 mV s(-1). Moreover, the polypyrrole/D-tartaric acid (1130[D-TA] = 1:1) displays satisfactory electronic conductivity in EIS measurement. The electrochemical results indicate that the D-tartaric acid is a promising support for the fabrication of electrode in electrochemical energy-storage devices. (C) 2016 Elsevier B.V. All rights reserved.