Ultra-high capacity and ultra-long cyclability anode materials of non-layered vanadium carbide(V8C7)@carbon microspheres for biapplications in Li-ion battery and Li-ion capacitor

doi:10.1016/j.jallcom.2022.166138

	Ultra-high capacity and ultra-long cyclability anode materials of non-layered vanadium carbide(V8C7)@carbon microspheres for biapplications in Li-ion battery and Li-ion capacitor
	He, Zheng-Hua 1; Gao, Jian-Fei 1; Kong, Ling -Bin 1,2
	2022-11-15
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	921
摘要	The main factor affecting the electrochemical performance of Li-ion hybrid capacitor (LIHCs) is the imbalance of kinetics between anode and cathode. Although 2D Layered Mxenes widely applied to energy storage owing to their remarkable electrical conductivity and adjustable interlamellar spacing, the synthesis process is time-consuming and hazardous. Therefore, Non-layered transition metal carbides (TMC) have gradually become a research hotspot. Herein, a facile two-step method is reported to synthesize the V8C7 nanoparticles grown in situ in carbon microspheres (V8C7 @CMs). The V8C7 @CMs provide high specific capacity (774 mAh g−1 after 330 cycles at 0.1 A g−1) in half cell. The long cycle stability with extraordinary rate capability (150 mAh g−1 after 5000 cycles at 1 A g−1, 100 mAh g−1 - 13000 cycles - 2 A g−1, and 70 mAh g−1 - 20000 cycles-5 A g−1) can be demonstrated. In order to realize the construction of high-performance LIHCs, it is also very important to design the cathode materials reasonably. So, the cathode material, nitrogen doped grapefruit peel biochar (NGPB), with outstanding rate performance and superior cycle stability, was designed and synthesized by the method of calcination. The performance tests indicates that the specific capacity is kept at 125 mAh g−1 after 2000 cycles at 1 A g−1, 120 mAh g−1-2000 cycles-2 A g−1 and 115 mAh g−1-2000 cycles-5 A g−1. Then, the constructed V8C7 @CMs//NGPB-2 LIHCs demonstrates high power density (PD) (9358 W kg−1), energy density (ED) (95.55 Wh kg−1) and excellent long cycle stability (a capacity retention rate of 74.7% after 10,000 cycles at 0.1 A g−1, 77%−5000 cycles-1 A g−1). Based on the above research, it is found that the key to realize high-performance LIHCs is to develop long-cycle stable and super rate capability anode materials. © 2022 Elsevier B.V.
关键词	Anodes Carbides Carbon Cathodes Citrus fruits Doping (additives) Lithium-ion batteries Microspheres Synthesis (chemical) Transition metals Vanadium compounds Biochar Cycle stability GITT Grapefruit peel biochar Hybrid capacitor Li-ion hybrid capacitor Long cycles Non-layered transition metal carbide Raisin cake structure Transition metals carbides
DOI	10.1016/j.jallcom.2022.166138
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000828781100001
出版者	Elsevier Ltd
EI入藏号	20222812346793
EI主题词	Ions
EI分类号	531 Metallurgy and Metallography - 714.1 Electron Tubes - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.1 Ceramics - 821.4 Agricultural Products
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159367
专题	兰州理工大学
通讯作者	Kong, Ling -Bin
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
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	He, Zheng-Hua,Gao, Jian-Fei,Kong, Ling -Bin. Ultra-high capacity and ultra-long cyclability anode materials of non-layered vanadium carbide(V8C7)@carbon microspheres for biapplications in Li-ion battery and Li-ion capacitor[J]. Journal of Alloys and Compounds,2022,921.
APA	He, Zheng-Hua,Gao, Jian-Fei,&Kong, Ling -Bin.(2022).Ultra-high capacity and ultra-long cyclability anode materials of non-layered vanadium carbide(V8C7)@carbon microspheres for biapplications in Li-ion battery and Li-ion capacitor.Journal of Alloys and Compounds,921.
MLA	He, Zheng-Hua,et al."Ultra-high capacity and ultra-long cyclability anode materials of non-layered vanadium carbide(V8C7)@carbon microspheres for biapplications in Li-ion battery and Li-ion capacitor".Journal of Alloys and Compounds 921(2022).