Molybdenum dioxide supported carbon nanotubes@carbon constructs disordered nanocluster particles as anodes for lithium-ion capacitors with long-term cycling stability

doi:10.1007/s10854-021-06408-1

	Molybdenum dioxide supported carbon nanotubes@carbon constructs disordered nanocluster particles as anodes for lithium-ion capacitors with long-term cycling stability
	Zhang, Hu-Jun 2; Jia, Qing-Chao 2; Kong, Ling-Bin 1,2
刊名	JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
	2021-07
卷号	32 期号:14 页码:18912-18930
关键词	Anodes Carbon carbon composites Carbon nanotubes Composite structures Convolution Cyclic voltammetry Electrolytes Energy storage Hydrothermal synthesis Ions Lithium Nanoclusters Sintering Storage (materials) Supercapacitor Conversion reactions Cyclic voltammetry curves Cycling stability Electrolyte contacts High specific capacity Lithium-ion capacitors Molybdenum dioxide Storage mechanism
ISSN号	0957-4522
DOI	10.1007/s10854-021-06408-1
英文摘要	As an emerging energy storage device, lithium-ion capacitors (LIC) can provide high-energy and power density and have received extensive attention from researchers. This paper proposes a new strategy for the synthesis of disordered CNT@C@MoO2 nanocluster particles by a two-step hydrothermal combined sintering method. Here, glucose is carbonized to form a carbon protective layer and Mo-O-C bonds are formed in the composite material, thereby suppressing the large volume expansion of MoO2 during the cycle. Moreover, the introduction of CNT@C and the presence of oxygen vacancies not only improve the conductivity of the entire electrode, but also the electrode-electrolyte contact area is accelerated, more active sites are provided, and the Li+ diffusion path is shortened. As a result, the designed multi-dimensional nanocluster carbon composite structure effectively improves the lithium storage performance of MoO2. The composite material still has a high specific capacity of 381 mAh g(-1) after being cycled for 300 cycles at 0.1 A g(-1), and a capacity of 148.4 mAh g(-1) for 1000 cycles at 1.0 A g(-1). At the same time, the calculation of cyclic voltammetry curve and capacitance contribution shows that the charge energy storage mechanism is the conversion reaction type dominated by diffusion. Then the constructed CNT@C@MoO2//AC LIC has high-energy (48.29 Wh kg(-1)) and power density (3600 W kg(-1)) and good cycling stability (82.26%@6000 cycles@1.0 A g(-1)). This research work opened up a new way for the design of carbon-coated metal oxide high-performance lithium-ion capacitor anode materials.
WOS研究方向	Engineering ; Materials Science ; Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000664020900002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148627]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Zhang, Hu-Jun,Jia, Qing-Chao,Kong, Ling-Bin. Molybdenum dioxide supported carbon nanotubes@carbon constructs disordered nanocluster particles as anodes for lithium-ion capacitors with long-term cycling stability[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2021,32(14):18912-18930.
APA	Zhang, Hu-Jun,Jia, Qing-Chao,&Kong, Ling-Bin.(2021).Molybdenum dioxide supported carbon nanotubes@carbon constructs disordered nanocluster particles as anodes for lithium-ion capacitors with long-term cycling stability.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,32(14),18912-18930.
MLA	Zhang, Hu-Jun,et al."Molybdenum dioxide supported carbon nanotubes@carbon constructs disordered nanocluster particles as anodes for lithium-ion capacitors with long-term cycling stability".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 32.14(2021):18912-18930.