Investigation of the supercapacitance of ruthenium-based/ hemp stem activated carbon
作者： Weijun Zhang , Jin Hu , Kaijun Wang , Yunbiao Duan , Jiamin Zhang
DOI: 10.1016/J.JPCS.2021.110019
关键词:
摘要: Abstract This work presents the synthesis of amorphous ruthenium-based/hemp stem activated carbon (HSAC) composites by a liquid phase co-precipitation method. It is first time that solution tetramethylammonium bicarbonate used as precipitant. The result reveals as-synthesized ruthenium oxide particles are small in size and homogenously distributed on surface. Cyclic voltammetry (CV) galvanostatic charge-discharge (GCD) results show oxide/HSAC composite has high mass-specific capacitance (652.79 F g−1 at 5 mV s−1) excellent rate capability. Electrochemical impedance spectroscopy (EIS) experiments further demonstrate it low device series resistance (0.653 Ω), which great enhancement contrast with state-of-the-art previous reports. High specific capacitance, outstanding cycling stability, facile preparation conditions make electrode material potentially promising for energy storage conversion devices.
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