Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries
Sub-micron size vanadium pentoxide (V2O5) particles are synthesized by novel urea assisted combustion method. Comprehensive characterization and electrochemical studies related to sintering temperature and duration are presented. X-ray diffraction (XRD) patterns showed the formation of pure-phase V2...
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sg-ntu-dr.10356-989142021-01-08T06:45:32Z Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan School of Materials Science & Engineering TUM CREATE Centre for Electromobility Energy Research Institute @ NTU (ERI@N) Sub-micron size vanadium pentoxide (V2O5) particles are synthesized by novel urea assisted combustion method. Comprehensive characterization and electrochemical studies related to sintering temperature and duration are presented. X-ray diffraction (XRD) patterns showed the formation of pure-phase V2O5 and the surface morphologies are studied by field emission scanning electron microscopy (FE-SEM). Electrochemical properties of the sintered V2O5 as a cathode in lithium-ion batteries are explored with respect to synthesis parameters using cyclic voltammetry and galvanostatic charge-discharge studies. The V2O5 particles obtained from 600°C sintering temperature for 1 h exhibits a higher initial discharge capacity ∼320 mAh g−1 (∼2.2 Li per V2O5) between 1.75–4.0 V vs. Li/Li+ at 0.1 C rate and shows good capacity retention of >70% after 50 cycles. Electrochemical impedance spectroscopy (EIS) studies show that the urea combustion method enables increased Li+ ion diffusion pathways and electro-active surface area in V2O5 particles. Ball milling procedure with or without carbon is also adopted to further reduce the particle size of V2O5 and related electrochemical properties are evaluated and described. Published version 2013-07-03T03:12:25Z 2019-12-06T20:01:06Z 2013-07-03T03:12:25Z 2019-12-06T20:01:06Z 2012 2012 Journal Article Cheah, Y. L., Aravindan, V., & Madhavi, S. (2012). Electrochemical Lithium Insertion Behavior of Combustion Synthesized V2O5 Cathodes for Lithium-Ion Batteries. Journal of The Electrochemical Society, 159(3), A273-A280. 0013-4651 https://hdl.handle.net/10356/98914 http://hdl.handle.net/10220/10904 10.1149/2.071203jes 163601 en Journal of the electrochemical society © 2012 The Electrochemical Society. This paper was published in Journal of The Electrochemical Society and is made available as an electronic reprint (preprint) with permission of The Electrochemical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1149/2.071203jes]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
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Sub-micron size vanadium pentoxide (V2O5) particles are synthesized by novel urea assisted combustion method. Comprehensive characterization and electrochemical studies related to sintering temperature and duration are presented. X-ray diffraction (XRD) patterns showed the formation of pure-phase V2O5 and the surface morphologies are studied by field emission scanning electron microscopy (FE-SEM). Electrochemical properties of the sintered V2O5 as a cathode in lithium-ion batteries are explored with respect to synthesis parameters using cyclic voltammetry and galvanostatic charge-discharge studies. The V2O5 particles obtained from 600°C sintering temperature for 1 h exhibits a higher initial discharge capacity ∼320 mAh g−1 (∼2.2 Li per V2O5) between 1.75–4.0 V vs. Li/Li+ at 0.1 C rate and shows good capacity retention of >70% after 50 cycles. Electrochemical impedance spectroscopy (EIS) studies show that the urea combustion method enables increased Li+ ion diffusion pathways and electro-active surface area in V2O5 particles. Ball milling procedure with or without carbon is also adopted to further reduce the particle size of V2O5 and related electrochemical properties are evaluated and described. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan |
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Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan |
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Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
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Cheah, Yan Ling |
title |
Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
title_short |
Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
title_full |
Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
title_fullStr |
Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
title_full_unstemmed |
Electrochemical lithium insertion behavior of combustion synthesized V2O5 cathodes for lithium-ion batteries |
title_sort |
electrochemical lithium insertion behavior of combustion synthesized v2o5 cathodes for lithium-ion batteries |
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2013 |
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https://hdl.handle.net/10356/98914 http://hdl.handle.net/10220/10904 |
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