The cobalt atom protection layers in-situ anchored titanium carbide with controllable interlayer spacing towards stable and fast lithium ions storage

doi:10.1016/j.jcis.2021.12.165

	The cobalt atom protection layers in-situ anchored titanium carbide with controllable interlayer spacing towards stable and fast lithium ions storage
	Liu, Mao-Cheng 2,3; Zhang, Yu-Shan 2,3; Zhang, Bin-Mei 2,3; Kong, Ling-Bin 2,3; Hu, Yu-Xia 1,2,3
刊名	Journal of Colloid and Interface Science
	2022-04-15
卷号	612 页码:267-276
关键词	Cobalt Ions Lithium Lithium compounds Nanostructured materials Seebeck effect Solid electrolytes Titanium carbide Co atom protection layer Controllable interlayer spacing Interlayer spacings Li + Lithium ion storages Protection layers Solid electrolyte interphase film Thin solid electrolyte interphase film Thin solids Ti3C2 mxene
ISSN号	0021-9797
DOI	10.1016/j.jcis.2021.12.165
英文摘要	MXenes are the typical ions insertion-type two-dimensional (2D) nanomaterials, have attracted extensive attention in the Li+ storage field. However, the self-stacking of layered structure and the consumption of electrolyte during the process of charge/discharge will limit the Li+ diffusion dynamics, rate capability and capacity of MXenes. Herein, a Co atom protection layers with electrochemical nonreactivity were anchored on/in the surface/interlayer of titanium carbide (Ti3C2) by in-situ thermal anchoring (x-Co/m-Ti3C2, x = 45, 65 and 85), which can not only avoid the self-stacking and expand the interlayer spacing of Ti3C2 but also reduce the consumption of Li+ and electrolyte by forming the thin solid electrolyte interphase (SEI) film. The interlayer spacing of Ti3C2 can be expanded from 0.98 to 1.21, 1.36 and 1.33 nm when the anchoring temperatures are 45, 65 and 85 °C due to the pillaring effects of Co atom layers, in where the 65-Co/m-Ti3C2 can achieve the best specific capacity and rate capability attributed to its superior diffusion coefficient of 8.8 × 10-7 cm2 s−1 in Li+ storage process. Furthermore, the 45, 65 and 85-Co/m-Ti3C2 exhibit lower SEI resistances (RSEI) as 1.45 ± 0.01, 1.26 ± 0.01 and 1.83 ± 0.01 Ω compared with the RSEI of Ti3C2 (5.18 ± 0.01 Ω), suggesting the x-Co/m-Ti3C2 demonstrates a thin SEI film due to the protection of Co atom layers. The findings propose a Co atom protection layers with electrochemical nonreactivity, not only giving an approach to expand the interlayer spacing, but also providing a protection strategy for 2D nanomaterials. © 2021 Elsevier Inc.
WOS研究方向	Chemistry
语种	英语
出版者	Academic Press Inc.
WOS记录号	WOS:000767971800003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158004]
专题	材料科学与工程学院
作者单位	1.School of Bailie Engineering &Technology, Lanzhou City University, Lanzhou; 730070, China 2.School of Materials Science and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou; 730050, China; 3.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, 287 Langongping Road, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Liu, Mao-Cheng,Zhang, Yu-Shan,Zhang, Bin-Mei,et al. The cobalt atom protection layers in-situ anchored titanium carbide with controllable interlayer spacing towards stable and fast lithium ions storage[J]. Journal of Colloid and Interface Science,2022,612:267-276.
APA	Liu, Mao-Cheng,Zhang, Yu-Shan,Zhang, Bin-Mei,Kong, Ling-Bin,&Hu, Yu-Xia.(2022).The cobalt atom protection layers in-situ anchored titanium carbide with controllable interlayer spacing towards stable and fast lithium ions storage.Journal of Colloid and Interface Science,612,267-276.
MLA	Liu, Mao-Cheng,et al."The cobalt atom protection layers in-situ anchored titanium carbide with controllable interlayer spacing towards stable and fast lithium ions storage".Journal of Colloid and Interface Science 612(2022):267-276.