期刊
ENERGY
卷 195, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2020.117047
关键词
Silicon; MXene; Anode; Lithium ion battery; Cycling performance
资金
- National Natural Science Foundation of China [51407134, 51702157, 51801001]
- China Postdoctoral Science Foundation [2016M590619, 2016M601878, 2017M611795]
- Natural Science Foundation of Shandong Province [ZR2019YQ24]
- Qingdao Postdoctoral Application Research Project
- Provincial Key Research and Development Program of Shaanxi [2019GY-197]
- Key Laboratory of Engineering Dielectrics and Its Application (Harbin University of Science and Technology), Ministry of Education [KFZ1803]
- Key Project of Baoji University of Arts and Sciences [ZK2018051]
- Baoji Science and Technology Project [16RKX1-29]
- Baoji Engineering Technology Research Center for Ultrafast Optics and New Materials [2015CXNL-1-3]
- Thousand Talents Plan for Young Professionals of Shaanxi Province
- Thousand Talents Plan
- World-Class University and Discipline
- Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province
- World-Class Discipline Program of Shandong Province
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. (C) 2020 Elsevier Ltd. All rights reserved.
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