二维材料Mxene的制备以及储能研究

PREPARATION OF TWO-DIMENSIONAL MATERIAL MXENE AND ENERGY STORAGE RESEARCH

张丹妍

11649052

硕士

物理学

陈伟强

2018-05-30

2018-07-04

哈尔滨工业大学

深圳

随着经济和科技的发展，世界对能源的依赖程度大大提高，能源危机大大增强，作为一种新型的二维材料， Mxene 备受瞩目，二维从发展至今已经出现了许多类型 ，其中 Mxene 由于超高电导率、结构稳定 等特点备受瞩目。本文力图制备一种 Mxene 化合物 Ti3C2TxTi3C2Tx 目前的制备工艺主要以氢氟酸M AX Phase 为主，但是 Mxene 的产率较低且性能有待优化，本文深入研究了Mxene 的制备工艺 ，该技术可作为基础通过改善制备方法并在此基础上掺入了石墨烯来改善了 Mxene 的电化学性能通过掺入石墨烯储能器件的容量和循环稳定性都得到了明显的提升。在超级电容器的测试中，当扫速为 5 0mv/s 时，经过掺杂石墨烯电极的容量为 219.25F-1通过石墨烯的掺杂 Mxene 的容量增长了 95.95F g-1 容量增长了 77%。锂离子电池的测试中，当扫速为 50 mv/s 时，以掺入石墨烯的 Mxene 作为负极材料的锂离子电池的容量为 405.26 mAhg-1 和之前的 Mxene 锂电池相比有明显的提高。以此材料为活性材料来制备锂离子电池以及超级电容器，还具有有良好的倍率性以及稳定性因此更有利于 Mxene的锂离子电池和超级电容的商业化。

With the development of economy and science and technology, the world’s dependence on energy has greatly increased, and t he energy crisis has been greatly enhanced. As a new type of two dimensional material, Mxene has attracted much attention. Since the development of two dimensionality, many types have emerged, among which Mxene is Super high conductivity, structural stabil ity and other characteristics have attracted attention. This article tries to prepare a Mxene compound Ti 3 C 2 T x , Ti 3 C 2 T x . The current preparation process is mainly based on the hydrofluoric acid MAX Phase, but the yield of Mxene is low and the performance n eeds to be optimized. This article has studied in depth the preparation process of Mxene. As a basis, the electrochemical performance of Mxene is improved by improving the preparation method and incorporating graphene on this basis. The capacity and cycle stability of the graphene based energy storage device have been significantly improved. In the supercapacitor test, when the scanning speed is 50mv/s, the capacity of the doped graphene electrode is 219.25F g 1 , and the doping of graphene increases the capacity of Mxene by 95.95F g 1 . An increase of 77%. In the lithium ion battery test, when the scanning speed is 50mv/s, the capacity of a lithium ion battery incorporating graphene Mxene as a negative electrode material is 405.26mAh g 1 , which is apparent from the previous Mxene lithium battery. improve. The use of this material as an active material for the preparation of lithium ion batteries and supercapacitors also has good rateability and stability, and is therefore more conducive to the commercialization of Mxene's lithium ion batteries and supercapacitors.

Mxene 锂离子电池 超级电容器

Mxene Li ion battery supercapacitor

中文

联合培养

哈尔滨工业大学

张丹妍. 二维材料Mxene的制备以及储能研究[D]. 深圳. 哈尔滨工业大学,2018.