Please use this identifier to cite or link to this item:
Title: Synthesis and enhanced electrochemical performance of Li2CoPO4F cathodes under high current cycling
Authors: Kim, G. J.
Karthikeyan, K.
Chung, K. Y.
Cho, B. W.
Lee, Y. S.
Aravindan, Vanchiappan
Amaresh, Samuthirapandian
Issue Date: 2012
Source: Amaresh, S., Kim, G. J., Karthikeyan, K., Aravindan, V., Chung, K. Y., Cho, B. W., et al. (2012). Synthesis and enhanced electrochemical performance of Li2CoPO4F cathodes under high current cycling. Physical Chemistry Chemical Physics, 14(34), 11904-11909.
Series/Report no.: Physical chemistry chemical physics
Abstract: Lithium cobalt fluorophosphate, Li2CoPO4F, is successfully synthesized by a solid state reaction under Ar flow at 700 °C. X-ray diffraction and scanning electron microscopic studies are utilized to analyze the structural and morphological features of the synthesized materials, respectively. The presence of fluorine is also supported by energy-dispersive X-ray spectroscopy. The electrochemical properties are evaluated by means of Li/Li2CoPO4F half-cell configurations in both potentiostatic and galvanostatic modes. The Li/Li2CoPO4F cell delivers an initial discharge capacity of 132 mA h g−1 at a current density of 0.1 mA cm−2 between 2.0 and 5.1 V at room temperature. Due to the higher operating potential of the Co2+/3+ couple in the fluorophosphate matrix, this cell shows a capacity retention of only 53% after 20 cycles, still the material delivered 108 mA h g−1 at a high current rate of 1 C. Cyclic voltammetric studies corroborate the insertion and extraction of Li+ ions by a single phase reaction mechanism during cycling.
DOI: 10.1039/C2CP41624G
Rights: © 2012 The Owner Societies.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:ERI@N Journal Articles

Citations 10

Updated on Dec 1, 2022

Web of ScienceTM
Citations 10

Updated on Dec 7, 2022

Page view(s) 10

Updated on Dec 8, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.