Please use this identifier to cite or link to this item: https://doi.org/10.1149/2.089112jes
Title: Nano-ZnCo2O4 material preparation by molten salt method and its electrochemical properties for lithium batteries
Authors: Reddy, M.V. 
Kenrick, K.Y.H.
Wei, T.Y.
Chong, G.Y.
Leong, G.H.
Chowdari, B.V.R. 
Issue Date: 2011
Source: Reddy, M.V., Kenrick, K.Y.H., Wei, T.Y., Chong, G.Y., Leong, G.H., Chowdari, B.V.R. (2011). Nano-ZnCo2O4 material preparation by molten salt method and its electrochemical properties for lithium batteries. Journal of the Electrochemical Society 158 (12) : A1423-A1430. ScholarBank@NUS Repository. https://doi.org/10.1149/2.089112jes
Abstract: We synthesized nano-ZnCo2O4 using molten salt method at low temperature 280C for 30 min or 3h in air, at a heating and cooling rate of 3Cmin and quenching. Reported are the effects of Co-sulphate, hydroxide and Zn-sulphate salt combinations, and heating, cooling rate on morphology and crystal structure of the ZnCo2O4. ZnCo2O 4-I to IV phases were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Density and Brunauer-Emmett-Teller (BET) surface area methods. All samples (ZnCo2O4-I to III) showed single phase materials with a lattice parameter values of ∼8.102-8.126 and surface area are in the range of 5 to 32 m2+ g-1. Electrochemical properties were evaluated via cyclic voltammetry (CV) and galvanostatic cycling studies. CV studies showed a minor differences in the peak potentials depending on preparation method, and all compounds exhibits a main anodic peaks to occur at ∼1.65 V and ∼2.1 V and cathodic peaks at ∼0.95V, ∼1.25 V. Nano-ZnCo2O4-II prepared using Zn-sulphate and Co-hydroxide source showed a high and stable capacity of ∼974 mAh g-1 at the end of 40th cycle, at a current rate of 60 mA g-1 in the voltage range, 0.005V-3.0 V. Heat treated electrode of ZnCo2O4- III showed improved cycling stability up to 30 cycles. © 2011 The Electrochemical Society.
Source Title: Journal of the Electrochemical Society
URI: http://scholarbank.nus.edu.sg/handle/10635/97298
ISSN: 00134651
DOI: 10.1149/2.089112jes
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

75
checked on Feb 13, 2018

WEB OF SCIENCETM
Citations

71
checked on Feb 19, 2018

Page view(s)

45
checked on Feb 18, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.