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Issue 46, 2014
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Improvement of desolvation and resilience of alginate binders for Si-based anodes in a lithium ion battery by calcium-mediated cross-linking

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Abstract

Si-based anodes in lithium ion batteries (LIBs) have exceptionally high theoretical capacity, but the use of a Si-based anode in LIBs is problematic because the charging–discharging process can fracture the Si particles. Alginate and its derivatives show promise as Si particle binders in the anode. We show that calcium-mediated “egg-box” electrostatic cross-linking of alginate improves toughness, resilience, electrolyte desolvation of the alginate binder as a Si-binder for LIBs. Consequently, the improved mechanical properties of the calcium alginate binder compared to the sodium alginate binder and other commercial binders extend the lifetime and increase the capacity of Si-based anodes in LIBs.

Graphical abstract: Improvement of desolvation and resilience of alginate binders for Si-based anodes in a lithium ion battery by calcium-mediated cross-linking

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Publication details

The article was received on 06 Aug 2014, accepted on 29 Sep 2014 and first published on 06 Oct 2014


Article type: Paper
DOI: 10.1039/C4CP03499F
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2014,16, 25628-25635
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    Improvement of desolvation and resilience of alginate binders for Si-based anodes in a lithium ion battery by calcium-mediated cross-linking

    J. Yoon, D. X. Oh, C. Jo, J. Lee and D. S. Hwang, Phys. Chem. Chem. Phys., 2014, 16, 25628
    DOI: 10.1039/C4CP03499F

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