超级电容器性能计算

Super Capacitor Performance Calculation

利用一层碳原子构成的石墨作为超级电容器模型,计算了碳基超级电容器的能量密度和功率密度最大值,分析了能量密度和功率密度与电压之间的关系。结果表明:当水为电解质,电压为1 V时,模型的能量密度达3.21 kJ/kg;当离子液体为电解质,电压为4 V时,模型的能量密度达51.36 kJ/kg;当有机液体为电解质,电压为2.5 V时,模型的能量密度达20.06 kJ/kg,最大功率密度达2.49×10^(12)kW/kg。当电导率一定时,碳基超级电容器的能量密度随电压的升高而增大。当电解质一定时,碳基超级电容器的功率密度随电压的升高而增大。

Using a layer of graphite composed of carbon atoms as a supercapacitor model,the energy density and maximum power density of a carbon-based supercapacitor were calculated,and the relationship between energy density,power density and voltage was analyzed.The research results show that when water is the electrolyte and the voltage is 1V,the energy density of the model reaches 3.21 kJ/kg;when the ionic liquid is the electrolyte and the voltage is 4 V,the energy density of the model reaches 51.36 kJ/kg;when the organic liquid is the electrolyte,when the voltage is 2.5 V,the energy density of the model reaches 20.06 kJ/kg;the maximum power density reaches 2.49×10^(12)kW/kg.When the conductivity reaches a certain value,the energy density of the carbon-based supercapacitor increases with the increase in voltage.When the electrolyte is constant,the power density of carbon-based supercapacitors increases with the increase in voltage.