期刊
ACS APPLIED ENERGY MATERIALS
卷 4, 期 9, 页码 10280-10289出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c02191
关键词
lithium-ion batteries; Ti3C2Tx MXene; plasma-assisted mechanochemistry; defects; active sites
资金
- National Natural Science Foundation of China [51777138]
- Natural Science Foundation of Tianjin City [18JCZDJC99700, 18JCYBJC87400, 18JCQNJC73900]
In this study, defects were introduced into Ti3C2Tx MXene using a plasma-assisted mechanochemistry approach, enhancing its performance as an anode in lithium-ion batteries. The treated MXene showed improved lithium storage capacity and rate performance, demonstrating potential for enhanced electrochemical energy storage using Ti3C2Tx MXene electrode materials.
Defects, exhibiting obvious influences on the periodic crystal structure and the surrounding charge distribution, can affect the physical and chemical properties of the electrode material significantly. In this work, a plasma-assisted mechanochemistry route is employed to construct defects in Ti3C2Tx MXene, boosting the lithium-ion storage performance when used as an anode in lithium-ion batteries. After the plasma-assisted mechanochemistry treatment, the layer structure became distorted and abundant defects acted as additional active sites for lithium-ion storage. As a result, the plasma-assisted mechanochemistry-treated Ti3C2Tx MXene (PM-Ti3C2Tx) delivers enhanced lithium storage capacity (242 mAh g(-1) at a current density of 100 mA g(-1)) and extraordinary rate performance (100 mAh g(-1) at 5 A g(-1)) as well as promising cycling stability. This work provides a route to boost the electrochemical energy storage performance of Ti3C2Tx MXene electrode materials.
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