Abstract
The copolymers were synthesized with different molar ratios of m-phenylenediamine to aniline (R for short) by a chemical oxidation method. The products were first used as electrochemical activity materials of the supercapacitor. Capacitive behaviors of the prepared copolymers in 1 mol·L−1 H2SO4 electrolyte were examined by electrochemical impedance spectroscopy, cyclic voltammeter, and galvanostatic charge/discharge. The relationship of molar ratios with capacitive property of the prepared products was investigated too. The results showed that the product with R of 2:98 displayed better electrochemical properties than that of the other products. Compared with the synthesized polymer in the absence of m-phenylenediamine, the polymerized copolymer with R of 2:98 exhibited the initial specific capacitance value of 475 F·g−1, which increased by nearly 10.1% than that of the former at a current density of 200 mA·g−1 in 1 mol·L−1 H2SO4 electrolyte in the potential range of −0.3 to 0.7 V. The discharge specific capacitance value of the copolymer remained 300 F·g−1 after 1,000 cycles, exhibiting a good cycling performance and the structure stability.
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Lu, JF., Wang, L., Lai, QY. et al. Study of capacitive properties in supercapacitor for copolymer of aniline with m-phenylenediamine. J Solid State Electrochem 13, 1803–1810 (2009). https://doi.org/10.1007/s10008-008-0779-9
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DOI: https://doi.org/10.1007/s10008-008-0779-9