Structural Design and Electrochemical Performance of PANI/CNTs and MnO2/CNTs Supercapacitor

Based on modified polyaniline/carbon nanotube (PANI/CNT) supercapacitor and manganese dioxide/carbon nanotube (MnO2/CNT) supercapacitor, environmentally friendly polyvinyl chloride (PVC) is used to structurally package supercapacitors. The tantalum wire is made into a lead wire to form a three-layer symmetrical supercapacitor. The packaged supercapacitor has high flame retardancy, corrosion resistance and good mechanical strength. Through the cyclic charge-discharge test on supercapacitor cells and series modules, PANI/CNT supercapacitors and MnO2/CNT supercapacitors have better voltage holding ratios in the high/low voltage phase, respectively. After 1000 charge-discharge cycles, the capacitance retention ratio can reach 98%.