▎ 摘　　要

The present work emphasizes improvement on the electrochemical properties of polyaniline/B doped graphene (PANI/BG) hybrid composite. The structure, morphology and electrochemical properties of the hybrid composite were characterized by XRD, Raman, FTIR, XPS, FESEM, HRTEM, cyclic voltammetry, electrical impedance spectroscopy and charge-discharge test respectively. The electrochemical results revealed that the resultant PANI/BG hybrid composite showed an enhancement in electrochemical properties. The calculated specific capacitance of the PANI/BG hybrid composite in a three-electrode system was about 1134F g(-1) in 1M H2SO4 at 1mVs(-1) while 306Fg(-1) of BG and 400Fg(-1) of PANI. The PANI/BG showed greater cycling stability because the capacitance remains as high as 89% even after 5000 charging-discharging cycles at a rate of 1Ag(-1) (60% for PANI and 86% for BG). The improved electrochemical performance of the composite is due to the BG which tailors the electronic properties of the graphene with a combination of pseudocapacitive conducting PANI.