Self-standing and high-performance B4C/Sn/acetylene black@reduced graphene oxide films as sodium-ion half/full battery anodes

Sun, Yu and Yang, Yanling and Shi, Xiao-Lei ORCID: https://orcid.org/0000-0003-0905-2547 and Suo, Guoquan and Lu, Siyu and Chen, Zhi-Gang ORCID: https://orcid.org/0000-0002-9309-7993 (2021) Self-standing and high-performance B4C/Sn/acetylene black@reduced graphene oxide films as sodium-ion half/full battery anodes. Applied Materials Today, 24:101137. pp. 1-12. ISSN 2352-9407


Abstract

Sn-based materials show great potentials as sodium-ion battery (SIB) anodes. However, limited to the preparation process and expensive raw materials, it is a great challenge to large-scale produce self-standing Sn-based materials. Herein, we develop a cost-effective and large-scale production method to fabricate flexible B4C/Sn/acetylene black@reduced graphene oxide (B4C/Sn/AB@rGO) films as self-standing SIB anodes by using high energy ball milling technology and self-standing process. In the film, the coated B4C acts as a conductor to enhance the internal conductivity and AB is used as a shell of B4C/Sn to accelerate the absorption of electrolyte solution, while rGO plays a role as a tie to connect B4C/Sn/AB units to accelerate the electronic transmission and simultaneously alleviate the volume expansion during the charge/discharge process. Finally, the B4C/Sn/AB@rGO films as the SIB anodes deliver a high reversible capacity of 393.4 mA h g−1 at 0.1 A g−1 and excellent cycling stability at 1 A g−1 with the reversible capacity of 155.5 mA h g−1 over 500 cycles. Moreover, the assembled sodium-ion full cell shows a stable capacity at 201.5 mA h g−1 for 50 cycles at 0.1 A g−1. This study indicates that our synthetic B4C/Sn/AB@rGO film has a great potential as the self-standing SIB anode.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 08 Aug 2021 23:53
Last Modified: 02 Nov 2021 01:27
Uncontrolled Keywords: Large-scale; Film; SnSelf-standing; Sodium-ion half/full cells
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
Identification Number or DOI: https://doi.org/10.1016/j.apmt.2021.101137
URI: http://eprints.usq.edu.au/id/eprint/43200

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