What is it about?
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%.
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Why is it important?
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%.
Perspectives
The modified PANI/CNT supercapacitor and MnO2/CNT supercapacitor unit are encapsulated by environmentally friendly PVC material to form a three-layer symmetrical supercapacitor, which improves its mechanical strength and corrosion resistance. Through the cyclic charge-discharge test, the capacities of the PANI/CNT and MnO2/CNT supercapacitors at 300 mA were 112.5 F and 103.1 F, respectively. In the open state, the PANI/CNT supercapacitor has a good voltage retention ratio in the high voltage section (0.53 V~1.2 V); MnO2/CNT supercapacitor has better voltage retention in the low voltage section (0.15 V~0.53 V). After 1000 cycles of charge-discharge, the capacitance retention ratio was 98%.
Professor Kai Wang
Read the Original
This page is a summary of: Structural Design and Electrochemical Performance of PANI/CNTs and MnO2/CNTs Supercapacitor, Science of Advanced Materials, August 2019, American Scientific Publishers,
DOI: 10.1166/sam.2019.3487.
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