Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in highperformance Li-ion hybrid capacitors

doi:10.1039/c7ra01671a

	Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in highperformance Li-ion hybrid capacitors
	Chen, Zhen-Kun 1,2; Lang, Jun-Wei 2; Liu, Ling-Yang 2; Kong, Ling-Bin 1
刊名	RSC ADVANCES
	2017
卷号	7 期号:32 页码:19967-19975
ISSN号	2046-2069
DOI	10.1039/c7ra01671a
英文摘要	Lithium-ion hybrid capacitors (LIHCs) have received a mushrooming amount of attention due to their high power density and energy density. However, the imbalanced dynamics between positive and negative electrodes limit their practical applications. Thus, in order to develop a kind of anode material with high power, we report a simple synthesis technology of a NbN nanoparticles/graphene nanosheets (NbN/GNSs) nanocomposite with fast Li insertion/extraction properties. Through a facile solution impregnation followed by annealing treatment, we get a freestanding layer-stacked structure combining 2D graphene nanosheets and 0D NbN nanoparticles. It shows a high reversible capacity of z 450 mA h g(-1) at 0.1 A g(-1), moreover, as a result of the fast pseudocapacitive performance, it also shows a remarkable rate capability and cycle stability (90% capacity retention at 5 A g(-1)after 10 000 cycles). Meanwhile, the LIHC with a NbN/GNSs anode and activated polyaniline derived carbon (APDC) cathode delivers the maximum energy density of 136 W h kg(-1), and the highest power density of 25 kW kg(-1) as well as a stable cycle life in the potential range of 1.0-4.0 V.
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000399242100062
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33465]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zhen-Kun,Lang, Jun-Wei,Liu, Ling-Yang,et al. Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in highperformance Li-ion hybrid capacitors[J]. RSC ADVANCES,2017,7(32):19967-19975.
APA	Chen, Zhen-Kun,Lang, Jun-Wei,Liu, Ling-Yang,&Kong, Ling-Bin.(2017).Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in highperformance Li-ion hybrid capacitors.RSC ADVANCES,7(32),19967-19975.
MLA	Chen, Zhen-Kun,et al."Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in highperformance Li-ion hybrid capacitors".RSC ADVANCES 7.32(2017):19967-19975.