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

这项工作提出了液相共沉淀法合成无定形钌基/大麻茎活性炭（HSAC）复合材料。这是第一次使用碳酸氢四甲酯铵溶液作为沉淀剂。结果表明，所合成的氧化钌颗粒尺寸小并且均匀地分布在活性炭表面上。循环伏安法（CV）和恒电流充放电（GCD）结果表明，该氧化钌/ HSAC复合材料具有质量的比的高电容（652.79 F G ^-1以5mV小号^-1）和出色的评分功能。电化学阻抗谱（EIS）实验进一步证明，该器件具有较低的器件串联电阻（0.653Ω），与最新技术报告相比，具有很大的增强。高比电容，出色的循环稳定性和简便的制备条件使电极材料有望用于能量存储和转换设备。