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Deep eutectic solvent based on sodium cations as an electrolyte for supercapacitor application

机译：基于钠阳离子的深层共晶溶剂作为超级电容器应用的电解质

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摘要

This study proposes a new deep eutectic solvent based on sodium nitrate and N-methylacetamide as an electrolyte for carbon-based supercapacitors at 80 degrees C. The reversible intercalation of ions into the graphitized ultra-micropores of activated carbon, separately detected at negative and positive electrodes, permits high pseudo-capacitance (up to 302 F g(-1)). The SEM/EDX mapping and XRD profile show homogeneous distribution of Na in negative polarized electrodes indicating that sodium is well incorporated in the ultra-micropores of the carbon structure. The good capacitance obtained at 80 degrees C in two-electrode cells at an operating voltage up to 2.0 V remained stable after 1000 charge-discharge cycles. Based on its physicochemical properties, as well as its electrochemical performances and stabilities, the sodium based DES can be considered a promising electrolyte for supercapacitor applications.
机译：这项研究提出了一种新的深共熔溶剂，该混合物基于硝酸钠和N-甲基乙酰胺，可在80摄氏度下用作碳基超级电容器的电解质。离子可逆地嵌入到活性炭的石墨化超微孔中，分别在负极和正极进行检测电极，允许高的伪电容（高达302 F g（-1））。 SEM / EDX映射和XRD谱显示Na在负极电极中的分布均匀，表明钠已很好地掺入碳结构的超微孔中。经过1000次充放电循环后，在80摄氏度的条件下，两电极电池在2.0 V的工作电压下获得的良好电容保持稳定。基于其理化特性以及其电化学性能和稳定性，钠基DES被认为是超级电容器应用中有希望的电解质。

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