TY - GEN
T1 - Investigations on the aging effect of supercapacitors
AU - Parigi, F.
AU - Gao, Y.
AU - Casares, M.
AU - Gachovska, T.
AU - Zhou, Y. S.
AU - Lu, Y. F.
AU - Patterson, D.
AU - Hudgins, J. L.
N1 - Funding Information:
This project funded by the Nebraska Center for Energy Sciences Research, Project No. 501. We would also like to thank S. Basiaga for help with the FTIR and TGA measurements; Dr. Redpenning for use of his surface analyzer; Dr. Shah for use of his vacuum oven and Dr. Huang for use of his glove box.
PY - 2011
Y1 - 2011
N2 - In this paper, the degradation processes of commercial supercapacitors aged at 2.7 V and 65°C for 2000 h were studied. The crystallinity, thermal stability, and specific surface areas of the carbon electrodes of the supercapacitors were measured. Significant changes and degradations in the carbon electrodes were observed for the aged supercapacitors. New functional groups were also found on the surface of the electrodes. The degradation of the lattice structures and the reduction in the specific surface area were as well observed for the aged supercapacitors. It was suggested that the aging of supercapacitors significantly changed the electrode surface which affects considerably electrical properties and functionality of supercapacitors. We have also performed experiments which suggest that the aging effect on the electrode is not uniformly distributed through its length.
AB - In this paper, the degradation processes of commercial supercapacitors aged at 2.7 V and 65°C for 2000 h were studied. The crystallinity, thermal stability, and specific surface areas of the carbon electrodes of the supercapacitors were measured. Significant changes and degradations in the carbon electrodes were observed for the aged supercapacitors. New functional groups were also found on the surface of the electrodes. The degradation of the lattice structures and the reduction in the specific surface area were as well observed for the aged supercapacitors. It was suggested that the aging of supercapacitors significantly changed the electrode surface which affects considerably electrical properties and functionality of supercapacitors. We have also performed experiments which suggest that the aging effect on the electrode is not uniformly distributed through its length.
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U2 - 10.1557/opl.2011.1341
DO - 10.1557/opl.2011.1341
M3 - Conference contribution
AN - SCOPUS:84860131793
SN - 9781618395290
T3 - Materials Research Society Symposium Proceedings
SP - 35
EP - 40
BT - Nanostructured Materials for Energy Storage
T2 - 2011 MRS Spring Meeting
Y2 - 25 April 2011 through 29 April 2011
ER -