Acta Metallurgica Sinica (English Letters) ›› 2021, Vol. 34 ›› Issue (3): 390-400.DOI: 10.1007/s40195-020-01001-7

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Nano-SnO2 Decorated Carbon Cloth as Flexible, Self-supporting and Additive-Free Anode for Sodium/Lithium-Ion Batteries

Xu Yang1,2, Ying-Ying Wang1, Bao-Hua Hou1,2, Hao-Jie Liang1,2, Xin-Xin Zhao1,3, Haosen Fan4(), Guang Wang1(), Xing-Long Wu1,2,3()   

  1. 1Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
    2National and Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
    3Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun, 130024, China
    4School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, China

Abstract:

In this study, nano-sized SnO2 decorated on carbon cloth (SnO2/CC) is prepared through a simple and facile solid method. The nano-sized SnO2 is uniformly distributed on the surface of carbon fibers in carbon cloth, providing sufficient free space to relieve volume expansion and reduce electrode pulverization during cycling. The as-prepared SnO2/CC as a flexible, self-supporting and additive-free anode electrode for sodium-ion/lithium-ion batteries (SIBs/LIBs) can demonstrate outstanding electrochemical performance. SnO2/CC after annealing at 350 °C (SC-350) as an anode for SIBs can deliver a reversible capacity of 0.587 mA h cm-2 at the current density of 0.3 mA cm-2 after 100 cycles. In addition, when cycling at 1.5 mA cm-2, SC-350 can maintain 1.69 mA h cm-2 after 500 cycles when used as LIB anode. These results illustrate that the as-prepared SnO2/CC can be a promising flexible anode material for flexible SIBs/LIBs and provide a simple and practical method for designing new flexible electrode materials.

Key words: Flexible carbon cloth, SnO2 coating, Sodium/lithium-ion batteries