Abstract
Graphene oxide (GO) was synthesized by an improved Hummers method and then reduced with NaBH4; GO became rGO with regular layered structure. Polyaniline (PANI)/rGO composite was prepared by a adsorption double oxidant method with rGO as a template. Some physical characterization methods (Fourier transform infrared spectroscopy analysis, X-ray diffraction, scanning electron microscope, and transmission electron microscope) were used to analyze the morphology and crystallinity of the composite. The electrochemical properties were characterized by cyclic voltammetry, impedance spectroscopy, galvanostatic charge/discharge, and rate capability. The first discharge specific capacity of the rPANI/rGO and PANI/rGO was 181.2 and 147.8 mAh/g. After 100 cycles, the capacity retention rate was still 90.2 and 88.9% separately, and the coulombic efficiency of batteries is close to 100%. These results demonstrate the composite has exciting potentials for the cathode material of lithium-ion battery.
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This study is the supported by the School of Marine Science and Technology, Harbin Institute of Technology, Weihai.
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Zhang, RT., Han, JJ., Liu, P. et al. Synthesis of PANI/rGO composite as a cathode material for rechargeable lithium-polymer cells. Ionics 24, 3367–3373 (2018). https://doi.org/10.1007/s11581-018-2525-3
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DOI: https://doi.org/10.1007/s11581-018-2525-3