Wang Li, Yuan Kun, Bai Hongyu, Xuan Ping, Xu Na, Yin Chaofan, Li Kechen, Hao Pengju, Zhou Yang, Dong Binbin
School of Materials Science and Engineering, Henan Province International Joint Laboratory of Materials for Solar Energy Conversion and Lithium Sodium Based Battery, Luoyang Institute of Science and Technology Luoyang 471023 PR China
Faculty of Materials Metallurgy and Chemistry Engineering Research Institute, Jiangxi University of Science and Technology Ganzhou 341000 PR China.
RSC Adv. 2023 Sep 4;13(37):26239-26246. doi: 10.1039/d3ra04775j. eCollection 2023 Aug 29.
MXene/graphene oxide composites with strong interfacial interactions were constructed by ball milling in vacuum. Graphene oxide (GO) acted as a bridge between TiCT nanosheets in the composite material, which could buffer the mechanical shear force during the ball milling process, avoid the structural damage of nanosheets and improve the structural stability of the composite material during the lithium process. Partial oxidation of TiCT nanosheets is caused by high temperatures during ball milling, which is beneficial to improve the intercalation of lithium ions in the material, reduce the stress and electrostatic repulsion between adjacent layers, and cause the composite to have better lithium storage performance. Under the high current density of 2.5 A g, the reversible capacity of the TiCT/GO composite material after 2000 cycles was 116.5 mA h g, and the capacity retention was as high as 116.6%.
通过真空球磨构建了具有强界面相互作用的MXene/氧化石墨烯复合材料。氧化石墨烯（GO）在复合材料中充当TiCT纳米片之间的桥梁，它可以缓冲球磨过程中的机械剪切力，避免纳米片的结构损伤，并提高复合材料在锂化过程中的结构稳定性。球磨过程中的高温导致TiCT纳米片部分氧化，这有利于改善材料中锂离子的嵌入，降低相邻层之间的应力和静电排斥，并使复合材料具有更好的储锂性能。在2.5 A g的高电流密度下，TiCT/GO复合材料在2000次循环后的可逆容量为116.5 mA h g，容量保持率高达116.6%。
