Crystalline Co2V3O8@Amorphous Co−B Core-Shell Nano-Microsphere: Tunable Shell Layer Thickness, Faradaic Pseudocapacitive Mechanism, and Electrochemical Capacitor Applications

doi:10.1002/batt.202100022

	Crystalline Co2V3O8@Amorphous Co−B Core-Shell Nano-Microsphere: Tunable Shell Layer Thickness, Faradaic Pseudocapacitive Mechanism, and Electrochemical Capacitor Applications
	Hou, Jing-Feng 1; Gao, Jian-Fei 1; Kong, Ling-Bin 1,2
刊名	Batteries and Supercaps
	2021-06-01
卷号	4 期号:6 页码:948-959
关键词	Cobalt compounds Electrolytes Electron transport properties Energy storage Nanocrystalline materials Shells (structures) Electroactive sites Electrochemical capacitor Electrochemical performance Energy storage and conversions Faradaic reactions High specific capacitances Interface engineering Synergistic properties
DOI	10.1002/batt.202100022
英文摘要	The interface engineering of highly efficient electrode materials is of dominant importance for enhancing the electrochemical performance of advanced energy storage devices. Here, we demonstrate the construction of a novel crystalline@amorphous core-shell nanostructured with Co3V2O8 spherical particles as the cores and Co−B nanoflakes as the shells. The Co−B shell layer thickness could be tuned by changing the mass ratio of Co3V2O8 and B source. This unique structure shows intriguing synergistic properties with increased electroactive sites and also provides effective space and a short diffusion distance for faradaic reactions. The tunable amorphous layer facilitates the electrolyte diffusion while showing elastic behavior to alleviate the volume strain of Co3V2O8, and also provides a path for electron transport. The resulting Co3V2O8@Co−B under optimum conditions exhibits a high specific capacitance, remarkable rate performance, and outstanding cycling stability. Such an effective redox approach may shed substantial light on inspiring crystalline/amorphous contacts and their derivatives for energy storage and conversion devices. © 2021 Wiley-VCH GmbH
WOS研究方向	Electrochemistry ; Materials Science
语种	英语
出版者	John Wiley and Sons Inc
WOS记录号	WOS:000624638000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150725]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Hou, Jing-Feng,Gao, Jian-Fei,Kong, Ling-Bin. Crystalline Co2V3O8@Amorphous Co−B Core-Shell Nano-Microsphere: Tunable Shell Layer Thickness, Faradaic Pseudocapacitive Mechanism, and Electrochemical Capacitor Applications[J]. Batteries and Supercaps,2021,4(6):948-959.
APA	Hou, Jing-Feng,Gao, Jian-Fei,&Kong, Ling-Bin.(2021).Crystalline Co2V3O8@Amorphous Co−B Core-Shell Nano-Microsphere: Tunable Shell Layer Thickness, Faradaic Pseudocapacitive Mechanism, and Electrochemical Capacitor Applications.Batteries and Supercaps,4(6),948-959.
MLA	Hou, Jing-Feng,et al."Crystalline Co2V3O8@Amorphous Co−B Core-Shell Nano-Microsphere: Tunable Shell Layer Thickness, Faradaic Pseudocapacitive Mechanism, and Electrochemical Capacitor Applications".Batteries and Supercaps 4.6(2021):948-959.