Morphologically robust NiFe2O4 nanofibers as high capacity Li-Ion battery anode material
Cherian, C.T. Sundaramurthy, J. Reddy, M.V. Suresh Kumar, P. Mani, K. Pliszka, D. Sow, C.H. Ramakrishna, S. Chowdari, B.V.R.
Cherian, C.T.
Sundaramurthy, J.
Suresh Kumar, P.
Mani, K.
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Abstract
In this work, the electrochemical performance of NiFe2O 4 nanofibers synthesized by an electrospinning approach have been discussed in detail. Lithium storage properties of nanofibers are evaluated and compared with NiFe2O4 nanoparticles by galvanostatic cycling and cyclic voltammetry studies, both in half-cell configurations. Nanofibers exhibit a higher charge-storage capacity of 1000 mAh g-1 even after 100 cycles with high Coulmbic efficiency of 100 % between 10 and 100 cycles. Ex situ microscopy studies confirmed that cycled nanofiber electrodes maintained the morphology and remained intact even after 100 charge-discharge cycles. The NiFe2O4 nanofiber electrode does not experience any structural stress and eventual pulverisation during lithium cycling and hence provides an efficient electron conducting pathway. The excellent electrochemical performance of NiFe2O4 nanofibers is due to the unique porous morphology of continuous nanofibers. © 2013 American Chemical Society.
Keywords
anode, electrospinning, impedance, Li-ion battery, nanofibers, NiFe2O4
Source Title
ACS Applied Materials and Interfaces
Publisher
Series/Report No.
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Date
2013
DOI
10.1021/am401779p
Type
Article