Contents
1 引言
2 MXene简介
3 MXene材料在钠离子电池中的应用
3.1 MXene
图4 (a)使用MOH制备M’-c-Ti3C2Tx(M+=Li +, Na +, K+, TBA+)的工艺示意图;(b)Na-c-Ti3C2Tx的扫描电子显微镜图像, 插图显示更高放大倍率的图像;(c)高分辨透射电子显微镜图像显示堆叠的层[49]Fig. 4 (a) Schematic of fabrication process for M’-c-Ti3C2Tx(M+=Li +, Na +, K+, TBA+)by flocculation using MOH;(b) SEM image of Na-c-Ti3C2Tx flocculated networks. Inset shows a higher magnification image;(c) HRTEM image showing stacked layers[49]. Copyright 2018, The Royal Society of Chemistry |
3.2 硫化物
图5 (a)真空抽滤制备MXene/SnS2复合材料的示意图;(b)MXene/SnS2-5∶1的扫描电子显微镜图像;(c, d)CoS/MXene的高分辨率透射电子显微镜图像;(e)CoS/MXene复合材料合成工艺示意图;(f)MXene/SnS2 10∶1, MXene/SnS2 5∶1, MXene/SnS2 2∶1和MXene的循环性能;(g)不同电流密度下CoS/MXene的倍率性能[43, 44]Fig. 5 (a) Schematic illustration of the preparation of MXene/SnS2 composite by vacuum-assisted filtration;(b) SEM image of the MXene/SnS2-5∶1;(c, d) HRTEM images of CoS/MXene;(e) The synthesis process of CoS/MXene composite;(f) Cycling performance of MXene/SnS2 10∶1, MXene/SnS2 5∶1, MXene/SnS2 2∶1 and MXene;(g) Rate performance of CoS/MXene at various current densities[43, 44].Copyright 2018, Elsevier; Copyright 2019, Elsevier |
3.3 氧化物
3.4 MXene/碳复合材料
3.5 其他材料
4 MXene材料在钾离子电池中的应用
4.1 MXene
4.2 钛酸盐
图7 (a)制备钛酸钠或钛酸钾纳米带的示意图;(b, c)钛酸钾的扫描电子显微镜图像(b: 插图是钛酸钾粉末);(d)钛酸钾的高分辨透射电子显微镜图像(插图是相应的SAED);(e)在0.1 mV·s-1 钛酸钾的循环伏安曲线;(f)钛酸钾在各种电流密度下(20~300 mA·g-1)的充放电曲线[80]Fig. 7 (a) Schematic of the fabrication of M-NTO or M-KTO nanoribbons;(b, c) SEM images of M-KTO(The inset is the photograph of M-KTO powder);(d) HRTEM image of M-KTO(The inset is the corresponding SAED patterns);(e) CV of M-KTO measured at 0.1 mV·s-1;(f) Galvanostatic charge and discharge curves of M-KTO cycled at different current densities[80]. Copyright 2017, American Chemical Society |