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Title: Electrochemical studies of few-layered graphene as an anode material for Li ion batteries
Authors: Petnikota, S.
Rotte, N.K.
Srikanth, V.V.S.S.
Kota, B.S.R.
Reddy, M.V.
Loh, K.P. 
Chowdari, B.V.R. 
Keywords: Anode
Li ion battery
Reversible capacity
Surface area
Issue Date: 2014
Citation: Petnikota, S., Rotte, N.K., Srikanth, V.V.S.S., Kota, B.S.R., Reddy, M.V., Loh, K.P., Chowdari, B.V.R. (2014). Electrochemical studies of few-layered graphene as an anode material for Li ion batteries. Journal of Solid State Electrochemistry 18 (4) : 941-949. ScholarBank@NUS Repository.
Abstract: Few-layered graphene (FLG) with specific surface area of only ~8.2 m 2 g-1 was synthesized from graphene oxide (GO) using microwave-assisted exfoliation. GO was prepared using modified Hummers method. Few-layered nature of the exfoliated material was confirmed by electron microscopy, X-ray and electron diffraction, and Raman spectroscopy. Coin cells were fabricated using FLG as an anode and lithium metal as a counter electrode. The cells were tested using cyclic voltammetry and galvanostatic cycling techniques. FLG showed reversible capacity values of ~400 and ~250 mAh g -1 at current rates of 0.1 and 1 C, respectively. Columbic efficiency was more than 98 % while cycle to cycle capacity fading was less than 2 %. Maximum discharge or charging capacity was below 0.3 V, a preferable characteristic for achieving ideal anodic behavior. © 2013 Springer-Verlag Berlin Heidelberg.
Source Title: Journal of Solid State Electrochemistry
ISSN: 14328488
DOI: 10.1007/s10008-013-2338-2
Appears in Collections:Staff Publications

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