A facile preparation of submicro-sized Ti2AlC precursor toward Ti2CTx MXene for lithium storage

doi:10.1016/j.electacta.2022.141152

IMR OpenIR

	A facile preparation of submicro-sized Ti2AlC precursor toward Ti2CTx MXene for lithium storage
	Yang, Ling Xu 1; Mu, Yong Biao 2; Liu, Rui Jia 3,4; Liu, Hui Jun 1; Zeng, Lin 2; Li, Hong Yi 1; Lin, Guang Qiang 1; Zeng, Chao Liu 1; Fu, Chao 1
通讯作者	Liu, Hui Jun(hui_jun_liu@163.com) ; Zeng, Chao Liu(clzeng@imr.ac.cn)
	2022-11-10
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	432 页码:9
摘要	MXenes, a new class of two-dimensional (2D) materials, have drawn special attention as potential anode materials for lithium-ion batteries (LIBs) in the last decade. However, the productization is primarily restricted by the scalable preparation of their parent MAX phases. Moreover, decreasing the particle size of the precursor powder could dramatically enhance the etching efficience. Furthermore, the fine-grained MAX phases are beneficial for improving the electrochemical performance of MXenes. Therefore, herein we report a facile and high-efficiency method to synthesize submicron-sized Ti2AlC powder in molten (Na,K)Cl in large quantities. As a result, Ti2CTx MXene powder was attained by almost complete removal of Al layer from the above precursor in 8% HF solution for 2 h at room temperature. The as-prepared Ti2CTx MXene exhibited superior performance as an anode material for LIBs with a sustainable discharge capacity of similar to 260 mAh.g(-1) at 100 mA.g(-1) in 120 cycles and a discharge capacity of 216 mAh.g(-1) at 500 mA.g(-1) with an excellent capacity retention of 96.13% after 540 cycles. The prominent performance of Ti2CTx as an anode material for LIBs is due to the introduction of high-density surface functional groups during etching of the submicron-sized Ti2AlC and enhanced density of edges, which provide more effective adsorption sites for Li ions.
关键词	Ti2AlC Ti2CTx Anode material Modified molten salt method Lithium-ion batteries
资助者	National Natural Science Foundation of China
DOI	10.1016/j.electacta.2022.141152
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; [51671204]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000862594200001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175794
专题	中国科学院金属研究所
通讯作者	Liu, Hui Jun; Zeng, Chao Liu
作者单位	1.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China 2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ling Xu,Mu, Yong Biao,Liu, Rui Jia,et al. A facile preparation of submicro-sized Ti2AlC precursor toward Ti2CTx MXene for lithium storage[J]. ELECTROCHIMICA ACTA,2022,432:9.
APA	Yang, Ling Xu.,Mu, Yong Biao.,Liu, Rui Jia.,Liu, Hui Jun.,Zeng, Lin.,...&Fu, Chao.(2022).A facile preparation of submicro-sized Ti2AlC precursor toward Ti2CTx MXene for lithium storage.ELECTROCHIMICA ACTA,432,9.
MLA	Yang, Ling Xu,et al."A facile preparation of submicro-sized Ti2AlC precursor toward Ti2CTx MXene for lithium storage".ELECTROCHIMICA ACTA 432(2022):9.