Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders
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The electrochemical performance of LiCoPO4 (LCP) as a high-voltage positive electrode for lithium-ion batteries is significantly improved by using the aqueous binder sodium carboxymethyl cellulose (CMC). The CMC not only provides a uniform electrode surface as shown by scanning electron microscopy and elemental mapping, but also suppresses the degradation of LiCoPO4 by scavenging HF in the electrolyte solution as demonstrated by FT-IR. In comparison with other water-soluble binders such as sodium alginate (ALG) and polyacrylic acid sodium salt (PAA), the homogeneous distribution of CMC within the electrodes accompanied by high accessibility of carboxylate groups in CMC are shown to be crucial factors to achieve enhanced performance with an excellent capacity retention of 94% after 20 cycles at a rate of C/10.
Kim , E J , Yue , X , Irvine , J T S & Armstrong , A R 2018 , ' Improved electrochemical performance of LiCoPO 4 using eco-friendly aqueous binders ' , Journal of Power Sources , vol. 403 , pp. 11-19 . https://doi.org/10.1016/j.jpowsour.2018.09.073
Journal of Power Sources
© 2018 Elsevier B.V. All rights reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.jpowsour.2018.09.073
DescriptionEJK would like to thank the Alistore ERI for the award of a studentship. The authors thank EPSRC Capital for Great Technologies Grant EP/L017008/1.
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