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Novel Carbon Materials in the Cathode Formulation for High Rate Rechargeable Hybrid Aqueous Batteries

Department of Chemical Engineering and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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Energies 2017, 10(11), 1844; https://doi.org/10.3390/en10111844
Received: 27 September 2017 / Revised: 27 October 2017 / Accepted: 8 November 2017 / Published: 11 November 2017
(This article belongs to the Section Energy Storage and Application)
Novel carbon materials, carbon nanotubes (CNTs) and porous graphene (PG), were exploited and used as conductive additives to improve the rate performance of LiMn2O4 cathode for the rechargeable aqueous Zn/LiMn2O4 battery, namely the rechargeable hybrid aqueous battery (ReHAB). Thanks to the long-range conductivity and stable conductive network provided by CNTs, the rate and cycling performances of LiMn2O4 cathode in ReHAB are highly improved—up to about 100 mAh·g−1 capacity is observed at 10 C (1 C = 120 mAh·g−1). Except for CNTs, porous graphene (PG) with a high surface area, an abundant porous structure, and an excellent electrical conductivity facilitates the transportation of Li ions and electrons, which can also obviously enhance the rate capability of the ReHAB. This is important because the ReHAB could be charged/discharged in a few minutes, and this leads to potential application of the ReHAB in automobile industry. View Full-Text
Keywords: carbon nanotube; graphene; LiMn2O4; rechargeable hybrid aqueous battery; high rate capability carbon nanotube; graphene; LiMn2O4; rechargeable hybrid aqueous battery; high rate capability
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Zhu, X.; Hoang, T.K.A.; Chen, P. Novel Carbon Materials in the Cathode Formulation for High Rate Rechargeable Hybrid Aqueous Batteries. Energies 2017, 10, 1844.

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