Abstract: Nitrogen-doped activated carbon is prepared through hydrothermal method with commercial activated carbon as raw material and ammonia as nitrogen source.Experimental parameters (hydrothermal reaction temperature,time and ammonia dosage) are optimized by uniform design experimentation method,and a regression equation is obtained.The nitrogen-doped activated carbon prepared under the optimized conditions is characterized by scanning electronic microscope (SEM),Fourier transform infrared spectrometer (FTIR),specific surface analyzer,cyclic voltammetry (CV),galvanostatic charge-discharge (GCD) and AC impedance (EIS).The results show that the specific capacitance of the nitrogen-doped activated carbon prepared through hydrothermal method under the optimized conditions is 130.1 F·g-1 at a scanning rate of 10 mV·s-1,which is in good agreement with the calculated value (133.5 F·g-1) by the regression equation.The specific capacitance of activated carbon after nitrogen-doping increases by 28% at 1 A·g-1 of charge discharge current density.The specific capacitance retention is 94.9% after 10,000 cycles at different charge and discharge rates.
王幼琪, 蒋文武, 沈培智. 水热法制备掺氮活性炭及其电化学性能研究[J]. 现代化工, 2022, 42(11): 150-154.
WANG You-qi, JIANG Wen-wu, SHEN Pei-zhi. Hydrothermal synthesis of nitrogen-doped activated carbon and study on its electrochemical properties. Modern Chemical Industry, 2022, 42(11): 150-154.
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