材料科学
纳米复合材料
锂(药物)
MXenes公司
介电谱
阳极
扫描电子显微镜
涂层
化学工程
电化学
复合材料
纳米技术
电极
化学
物理化学
内分泌学
工程类
医学
作者
Hanan Abdurehman Tariq,Umair Nisar,Jeffin James Abraham,Zubair Ahmad,Siham Y. AlQaradawi,Ramazan Kahraman,Abdul Shakoor
标识
DOI:10.1016/j.apsusc.2022.152441
摘要
TiO2 has the potential to be a viable anode material for high-power lithium-ion batteries (LIBs). However, the lower electronic conductivity of TiO2 limits its practical applications. Here, the synthesis of novel TiO2 decorated Ti3C-MXene anode for LIBs using in-situ hydrolysis is discussed. MXenes are well known for their outstanding structural stability and superior electronic conductivities; thus, using MXenes as a host material for TiO2 may improve its structural and electrical characteristics. Scanning and transmission electron microscopy (SEM & TEM) examination revealed that the in-situ method resulted in a uniform and comformal coating of TiO2 (27.5 nm) on the inner and outer surfaces of MXene surfaces. BET analysis revealed that the larger surface area of MXene-TiO2 nanocomposite enhanced the active sites for lithium intercalation, which improved electrochemical performance. Furthermore, electrochemical impedance spectroscopy (EIS) analysis revealed faster kinetics for MXene-TiO2 materials when compared to the TiO2 anode. Compared to pristine TiO2 anode, 5 wt% MXene-TiO2 nanocomposite showed significantly better electrochemical performance, with an electrochemical capacity of around 200 mAhg−1 at 0.1C. Nanocomposites based on MXene-TiO2 exhibit outstanding electrochemical performance, indicating the potential for using MXene-based nanocomposites as an anode in high-performance lithium-ion batteries.
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