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High-performance sodium-ion batteries with hard carbon anode: transition from half-cell to full-cell perspective

Abstract

Hard carbon is an appealing anode material for sodium-ion batteries (SIBs) due to renewable resources, low cost and high specific capacity. Practical full cells based on hard carbon with high energy density and long cyclability is expected to possess application interest for grid-scale energy storage. In this review, following this archetype use scenario of SIBs, we aim at providing a quantitative full-cell metric for evaluating newly designed anode or cathode. Some significant problems in conventional half-cell and full-cell tests, including unfaithful prediction of capacity loss by Coulombic efficiency in the full-cell and under-estimated capacity of hard carbon in half-cell test, are discussed to better assess the actual capacity and cyclability of hard carbon anode in sodium-matched full cell. Finally, we review rational design of hard carbon itself and the selection of electrolyte under such full-cell perspective.

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Publication details

The article was received on 01 Sep 2019, accepted on 14 Oct 2019 and first published on 15 Oct 2019


Article type: Review Article
DOI: 10.1039/C9NR07545C
Nanoscale, 2019, Accepted Manuscript
  • Open access: Creative Commons BY license
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    High-performance sodium-ion batteries with hard carbon anode: transition from half-cell to full-cell perspective

    C. X. long, Y. Zheng, W. Liu, C. Zhang, S. Li and J. Li, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR07545C

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