Journal
JOURNAL OF ENERGY STORAGE
Volume 60, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.106596
Keywords
Manganese dioxide; Polyaniline; Carbon nanofibers; Energy storage
Categories
Ask authors/readers for more resources
Polyaniline-based carbon nanofibers were treated with a mixed acid and then reacted with potassium permanganate to obtain manganese dioxide/carbon nanofiber composites. The effects of acid treatment time, reaction temperature, reactant ratio, and the addition method of potassium permanganate on the electrochemical properties of composites were thoroughly studied. The results showed that the optimization parameters were 6 h for acid treatment time, 70 degrees C for reaction temperature, and a reactant ratio of 1:2. In addition, sufficient mixing of the reactants in advance was crucial for the formation of uniformly shaped MnO2 nanoflakes. The acid treatment increased the specific capacitance of the composites from 88.7 to 166.7 F/g, and the composites achieved a lifespan of up to 1000 cycles with 85.08% capacity retention.
Polyaniline-based carbon nanofibers were treated with a mixed acid and then reacted with potassium perman-ganate to obtain manganese dioxide/carbon nanofiber composites. The effects of acid treatment time, reaction temperature, reactant ratio, and the addition method of potassium permanganate on the electrochemical properties of composites were studied thoroughly. Results showed that the optimum time for acid treatment was 6 h, the optimum reaction temperature was 70 degrees C and the optimum reactant ratio was 1:2. Besides, mixing the reactants sufficiently well in advance was critical for the formation of uniformly shaped MnO2 nanoflakes. Moreover, the acid treatment increased the specific capacitance of composites from 88.7 to 166.7 F/g, and the composites achieved a lifespan up to 1000 cycles with 85.08 % capacity retention.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available