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Issue 31, 2013
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The effects of supercritical carbon dioxide treatment on the morphology and electrochemical performance of LiFePO4 cathode materials

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Abstract

As cathode materials, LiFePO4 particles have been investigated after a supercritical carbon dioxide (scCO2) treatment. We first produced LiFePO4 through a hydrothermal method. Then, scCO2 was introduced to change the morphology of the particles. Three effects have been found after the scCO2 treatment; the breakup of the aggregated LiFePO4 platelets into separate plates, the purification of LiFePO4, and the formation of porous LiFePO4. Electrochemical measurements showed that the performance of LiFePO4 greatly improved after the scCO2 treatment. Finally, a theoretical model was used to explain the mechanism of the morphology change.

Graphical abstract: The effects of supercritical carbon dioxide treatment on the morphology and electrochemical performance of LiFePO4 cathode materials

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Publication details

The article was received on 08 Mar 2013, accepted on 13 May 2013 and first published on 14 May 2013


Article type: Paper
DOI: 10.1039/C3RA41133H
Citation: RSC Adv., 2013,3, 12786-12793
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    The effects of supercritical carbon dioxide treatment on the morphology and electrochemical performance of LiFePO4 cathode materials

    M. Xie, X. Zhang, S. Deng, Y. Wang, H. Wang, J. Liu, H. Yan, J. Laakso and E. Levänen, RSC Adv., 2013, 3, 12786
    DOI: 10.1039/C3RA41133H

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