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  • Nordh, Tim, 1988-, et al. (author)
  • Different Shades of Li4Ti5O12 Composites : The Impact of the Binder on Interface Layer Formation
  • 2017
  • In: ChemElectroChem. - : Wiley. - 2196-0216. ; 4:10, s. 2683-2692
  • Journal article (peer-reviewed)abstract
    • Replacing the traditional PVdF(-HFP) electrode binder by water-soluble alternatives can potentially render electrode fabrication more environmentally benign. Herein, the surface layer formation of stored and cycled samples of two water-based Li4Ti5O12 composites employing either poly(sodium acrylate) (PAA-Na) or sodium carboxymethyl cellulose (CMC-Na) as binders are studied by X-ray photoelectron spectroscopy. In all three formulations, the surface layer composition formed upon storage differed notably from the solid-electrolyte interphase (SEI) layer formed on cycled samples. The surface layer under open-circuit conditions seems to originate mostly from the electrolyte salt (LiPF6) degradation. The comparison with cycled samples after 10 and 100 cycles shows a continuous build-up of an SEI layer on PAA-Na and PVdF-HFP electrodes. In contrast, on CMC-Na containing electrodes the SEI composition remains nearly unchanged. The results correlate well with the electrochemical behavior.
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journal article (1)
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peer-reviewed (1)
Author/Editor
Edström, Kristina, P ... (1)
Younesi, Reza (1)
Brandell, Daniel, 19 ... (1)
Tengstedt, Carl (1)
Nordh, Tim, 1988- (1)
Jeschull, Fabian (1)
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Uppsala University (1)
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English (1)
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Natural sciences (1)
Year
2017 (1)

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