Super Farad Capacitor Low Temperature

As a result, it is recommended to use the supercapacitor at the lowest temperature possible to decrease internal degradation and ESR increase. If this is not possible, decreasing the applied voltage to the supercapacitor will assist in offsetting the negative effect of the high temperature.

Moreover, we further assembled a flexible supercapacitor, which was composed of organo-hydrogel electrolyte and two PANI/CC electrodes. The supercapacitor showed a large capacitance of 225F/g at −65 °C, which was about 93% of the capacitance at room temperature.

Furthermore, current anti-freezing flexible supercapacitors generally suffer from a relatively low capacitance retention (<75%), especially at ultra-low temperatures. The result is attributed to the significant decrease in ionic conductivity of the electrolytes at low temperatures.

Operating temperature range from -40°C to +85°C and a voltage tolerance range from 3.6V to 6.3V. These supercapacitors boast an energy density that is 8 to 10 times higher than that of EDLC (Electrochemical Double Layer Capacitors). They can withstand voltages of up to 4.2V.

From above respects, it is a high challenge to design and prepare anti-freezing flexible supercapacitors under ultra-low temperatures (<55.0℃). Furthermore, current anti-freezing flexible supercapacitors generally suffer from a relatively low capacitance retention (<75%), especially at ultra-low temperatures.

The life of supercapacitors will double for every 10°C decrease in temperature or voltage by 0.1V. Supercapacitors operated at room temperature can have life expectancies of several years compared to operating the capacitors at their maximum rated temperature. L1= Load life rating of the super capacitor (typically 1000 hours at rated temperature).