Mesoporous carbon (N-CMK3) decorated with different amounts of SnO₂ nanoparticles was prepared in a controllable manner by using an incipient wetness impregnation technique, followed by a chemical reduction process, for application as a supercapacitor. The results of the analysis demonstrated that the surface area and pore volume of N-CMK3 decorated with SnO₂ continued to decrease after impregnation with increasing amounts of SnO₂. The results of the electrochemical measurement proved that decoration of N-CMK3 with a suitable amount of SnO₂ enhanced the specific capacitance of the electrodes. Among the SnO₂@N-CMK3 (SNC) samples under investigation, 15-SNC with 15 wt% SnO₂ delivered outstanding electrochemical performance with respect to specific capacitance and cycling stability. At a scan rate of 5 mV s⁻¹, 15-SNC exhibited superspecific capacitance up to 344 F g⁻¹ and long-term cyclability at a scan rate of 50 mV s⁻¹ with 92.4% retention of its initial specific capacitance of 161 F g⁻¹ after 5000 cycles.

中文翻译：

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用氧化锡装饰中孔碳电极以增强其超电容性能

通过使用初期湿润浸渍技术，然后通过化学还原工艺，以可控方式制备装饰有不同数量SnO ₂纳米粒子的介孔碳（N-CMK3），以用作超级电容器。分析的结果表明，装饰具有SnO的N- CMK3的表面积和孔体积₂继续浸渍后降低随的SnO量₂。电化学测量的结果证明，用适量的SnO ₂修饰N-CMK3可以提高电极的比电容。在所研究的SnO ₂ @ N-CMK3（SNC）样品中，含15 wt％SnO _2的15-SNC在比电容和循环稳定性方面具有出色的电化学性能。在5 mV s ^-1的扫描速率下，15-SNC表现出高达344 F g ^-1的超比电容，在50 mV s ^-1的扫描速率下具有长期可循环性，其初始比电容161保持92.4％5000次循环后的F g ^-1。