CMC as a binder in LiNi0.4Mn1.6O4 5V cathodes and their electrochemical performance for Li-ion batteries

Aqueous processing would reduce the costs and toxicity associated with the making of the composite electrode. In the present study, carboxymethyl cellulose is used as a binder for 5V cathode material LiNi"0"."4Mn"1"."6O"4. Compared with electrodes using polyvinylid...

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Bibliographic Details
Published in:Electrochimica acta 2012-02, Vol.62, p.77-83
Main Authors: Wang, Zhongli, Dupré, Nicolas, Gaillot, Anne-Claire, Lestriez, Bernard, Martin, Jean-Frédéric, Daniel, Lise, Patoux, Sébastien, Guyomard, Dominique
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:Aqueous processing would reduce the costs and toxicity associated with the making of the composite electrode. In the present study, carboxymethyl cellulose is used as a binder for 5V cathode material LiNi"0"."4Mn"1"."6O"4. Compared with electrodes using polyvinylidene difluoride binder, CMC-based LiNi"0"."4Mn"1"."6O"4 electrodes display a better discharge capacity at all rates. At 0.2C, the discharge capacity is close to the theoretical capacity (146mAhg^-^1) and the self-discharge is 10% lower. Polyvinylidene difluoride can be efficiently replaced by carboxymethyl cellulose for LiNi"0"."4Mn"1"."6O"4 in terms of electrochemical performance and brings the advantage of an environment friendly and low cost electrode processing.
ISSN:0013-4686
DOI:10.1016/j.electacta.2011.11.094