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Sulfur-terminated Tin Oxide for Durable, Highly Reversible Storage of Large-Capacity Lithium

Abstract

Convertible reactant anodes such as SnO2, GeO2, In2O3, and ZnO offer unusually large capacity for lithium ion batteries (LIBs) but all suffer from a huge volume expansion which triggers internal fracture and reconfiguration. Herein, sulfur-termination as a shifting paradigm to relieve volume expansion is proposed. Sulfur-termination strategy is expected to setting each metal nanocrystal into a conducting container during reduction process and plenty of containers are physically separate from each other but are electrically wired to the current collector. To put the strategy into practice, sulfur-terminated tin oxide (SnO2-x-S) nanocrystals as reactants are demonstrated to resist coarsening and reconfiguration throughout cycling. Such LIB anodes with the addition of conductive supporter provide 1010 mA h g-1 at 2 A g-1 after 800 cycles, breaking new ground on multiple fronts for this promising anode class.

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Publication details

The article was received on 15 Oct 2019, accepted on 23 Nov 2019 and first published on 25 Nov 2019


Article type: Paper
DOI: 10.1039/C9TA11330D
J. Mater. Chem. A, 2019, Accepted Manuscript

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    Sulfur-terminated Tin Oxide for Durable, Highly Reversible Storage of Large-Capacity Lithium

    C. Dong, W. Dong, Q. Zhang, X. Huang, L. Gu, I. Chen and F. Q. Huang, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA11330D

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