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Electrochemical Performance of Lithium-Ion Hybrid Supercapacitors based on Activated Carbon and Nanoplatelet Li4Ti5O12 Insertion Electrode Synthesized by Nanoscission Technique

Published online by Cambridge University Press:  16 March 2015

Sandeep Singh ,
Alok C Rastogi ,
Fredrick Omenya ,
M Stanley Whittingham ,
Archit Lal  and
Shailesh Upreti
Sandeep Singh
Affiliation:
Electrical and Computer Engineering, Binghamton University, Binghamton, NY 13902, U.S.A Center for Autonomous Solar Power, Binghamton University, Binghamton, NY 13902, U.S.A
Alok C Rastogi
Affiliation:
Electrical and Computer Engineering, Binghamton University, Binghamton, NY 13902, U.S.A Center for Autonomous Solar Power, Binghamton University, Binghamton, NY 13902, U.S.A
Fredrick Omenya
Affiliation:
Chemistry Department, Binghamton University, Binghamton, NY 13902, U.S.A
M Stanley Whittingham
Affiliation:
Chemistry Department, Binghamton University, Binghamton, NY 13902, U.S.A
Archit Lal
Affiliation:
Primet Precision Materials, Inc., 950 Danby Road, Suite 90, Ithaca, NY 14850, U.S.A
Shailesh Upreti
Affiliation:
Primet Precision Materials, Inc., 950 Danby Road, Suite 90, Ithaca, NY 14850, U.S.A
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Abstract

Electrochemical performance of hybrid supercapacitor (HSC) utilizing surface sculpted Li4Ti5O12 (LTO) insertion electrode having nanoplatelet-like morphology and activated carbon (AC) electrode is investigated for energy storage application. Cyclic voltammetry (CV) at variable scan rates 0.5 to 60 mV.s-1 in the 0-3.2 V range show pseusocapacitive behavior and fast rate of current change indicating rapid Faradaic kinetics. Nyquist impedance study show charge transfer resistance due to kinetic effects of electron transfer and Li+ de-intercalation process at the LTO anode. Low capacity (0.2 C-1C) charge-discharge (CD) curves show high Coulomb efficiency with marginal reduction at high 5-10 C rates due to irreversibility of adsorbed PF6 anions at the electrolyte-AC interface. Galvanostatic CD cycling tests over 50 cycles at different C-rates show decline in storage capacity due to electrode polarization effects. Reduction, broadening and shift of the Raman line at 678 cm-1 from Ti-O bonds in TiO6 octahedra after cycling indicates Li insertion reactions in functioning of hybrid supercapacitor. The hybrid supercapacitor cells have shown energy density, 29 Wh.kg-1 and power density, 350 W.kg-1.

Keywords

energy storagenanoscaleion-solid interactions
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1740: Symposium Z – Materials Challenges for Energy Storage across Multiple Scales , 2015 , mrsf14-1740-z03-01
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

Pasquier, A.D., Plitz, I., Menocal, S., Amatucci, G., J. Power Sources, 115, 171 (2003)CrossRefGoogle Scholar
Sivakkumar, S.R., Pandolfo, A.G., Electrochimica Acta, 65, 280 (2012)CrossRefGoogle Scholar
Woo, S.-W., Dokko, K., Nakano, H., Kanamura, K., Electrochemistry, 75, 635 (2007)CrossRefGoogle Scholar
Karthikeyan, K., Aravindan, V., Lee, S.B., et al. ., J. Alloys Compd., 504, 224 (2010)CrossRefGoogle Scholar
Naoi, K., Ishimoto, S., Isobe, Y., Aoyagi, S., J. Power Sources, 195, 6250 (2010)CrossRefGoogle Scholar
Hao, Y. J., Lai, Q. Y., Lu, J. Z., Ji, X.Y.., Ionics 13, 369 (2007)CrossRefGoogle Scholar
Li, X., Qu, M., Yu, Z., Solid State Ion., 181 635 (2010)CrossRefGoogle Scholar
He, N., Wang, B., Huang, J., J. Solid-State Electron., 14, 1241 (2010)CrossRefGoogle Scholar
http://primetprecision.com/our-technology/ Google Scholar