Abstract
AbstractPolyaniline (PANI) is chemically synthesized using two low‐molecular‐weight organic acids (D‐tartaric acid and citric acid) as the dopants, respectively. The doped PANI is characterized by field emission scanning electron microscopy, FT‐IR spectra, and X‐ray diffraction. The two doped PANIs exhibit different electrochemical properties, especially in the supercapacitive behaviors. Compared with citric acid‐doped PANI, D‐tartaric acid‐doped PANI shows higher specific capacitance (525 F/g at 1 A/g) and cyclic stability. The good electrochemical behaviors of D‐tartaric acid‐doped PANI might be attributed to the two carboxyl groups of D‐tartaric acid, which are beneficial to the oriented growth of PANI chains. The results demonstrate that compared with citric acid, D‐tartaric acid is a promising dopant for PANI used in supercapacitors.
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