Sandwich-like silicon/Ti3C2Tx MXene composite by electrostatic self-assembly for high performance lithium ion battery

Fan Zhang, Zirui Jia, Chao Wang, Ailing Feng, Kuikui Wang, Tianqi Hou, Jiajia Liu, Yi Zhang and Guanglei Wu

Energy, 2020, vol. 195, issue C

Abstract: Silicon has been regarded as a promising anode materials for lithium ion battery. However, large volume change during lithiation/delithiation process impedes its application for energy storage. Two-dimensional titanium carbide or carbonitride nanosheet, known as MXene, possesses layered-stacked structure and high electrical conductivity. So MXene has a great potential to improve the cycle life of silicon anode because its layered-stacked structure can accommodate the volume expansion of silicon. Herein, we present a facile process to prepare sandwich-like silicon/Ti3C2Tx MXene composite directed by electrostatic self-assembly. This unique architecture could accommodate silicon expansion during lithiation and enhance electronical conductivity. The silicon/Ti3C2Tx MXene composite delivers an initial reversible capacity of 1067.6 mAh g−1 at a current of 300 mA g−1. Moreover, it shows a steady cycling ability of 643.8 mAh g−1 at 300 mA g−1 after 100 cycles. This work may shed lights on the development of high energy density silicon-based anode materials for lithium ion battery.

Keywords: Silicon; MXene; Anode; Lithium ion battery; Cycling performance (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:195:y:2020:i:c:s0360544220301547

DOI: 10.1016/j.energy.2020.117047

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