gamma-Mo2N Nanobelts with Controlled Grain and Mesopore Sizes as High-Performance Anodes for Lithium-Ion Capacitors

doi:10.1021/acsanm.1c03043

	gamma-Mo2N Nanobelts with Controlled Grain and Mesopore Sizes as High-Performance Anodes for Lithium-Ion Capacitors
	Zhang, Hu-Jun 1; Jia, Qing-Chao 1; Kong, Ling-Bin 1,2
刊名	ACS APPLIED NANO MATERIALS
	2021-11-26
卷号	4 期号:11 页码:12514-12526
关键词	gamma-Mo2N nanobelts grain size mesopore size pseudocapacitive behavior lithium-ion capacitor
DOI	10.1021/acsanm.1c03043
英文摘要	A lithium-ion capacitor (LIC) is a device with the dual characteristics of lithium-ion batteries (LIBs) and supercapacitors (SCs), but there is a serious dynamic imbalance between the positive and negative materials. Here, in the research work, gamma-Mo2N nanobelts with different grain sizes and mesopore sizes have been prepared to study deeply the electrode dynamics. The results reveal that the reduction of the grain size and mesopore size will lead to a sharp increase in capacitance contribution, excellent rate performance, and structural stability. This is attributed to that the reduction of the grain/mesopore size will promote the oxidation-reduction reaction of the electrode material. Considering this advantage, a high-performance LIC is constructed with a gamma-Mo2N-700 anode and a hierarchical porous activated carbon (AC) cathode. This device can achieve the highest energy density of 93.81 Wh kg(-1) and a power density of 7513.68 W kg(-1), and the excellent specific capacity of up to 87.16% is maintained after 1000 cycles. This work mainly introduces the two parameters of grain size and mesopore size to explore the structure-activity relationship that affects the performance of LIC anode materials, which provides an analysis method for the difference in lithium storage performance.
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000752894100115
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154981]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hu-Jun,Jia, Qing-Chao,Kong, Ling-Bin. gamma-Mo2N Nanobelts with Controlled Grain and Mesopore Sizes as High-Performance Anodes for Lithium-Ion Capacitors[J]. ACS APPLIED NANO MATERIALS,2021,4(11):12514-12526.
APA	Zhang, Hu-Jun,Jia, Qing-Chao,&Kong, Ling-Bin.(2021).gamma-Mo2N Nanobelts with Controlled Grain and Mesopore Sizes as High-Performance Anodes for Lithium-Ion Capacitors.ACS APPLIED NANO MATERIALS,4(11),12514-12526.
MLA	Zhang, Hu-Jun,et al."gamma-Mo2N Nanobelts with Controlled Grain and Mesopore Sizes as High-Performance Anodes for Lithium-Ion Capacitors".ACS APPLIED NANO MATERIALS 4.11(2021):12514-12526.