Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process

doi:10.1016/j.jallcom.2017.04.313

	Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process
	Hu, Qiao 1; Zou, Bang-Kun 1; Liao, Jia-Ying 1; Yu, Mu-Fan 1; Wen, Zhao-Yin 2; Chen, Chunhua 1
刊名	Journal of Alloys and Compounds
	2017
卷号	717 页码:1-7
ISSN号	09258388
DOI	10.1016/j.jallcom.2017.04.313
英文摘要	A graphene-coated Li3V2(PO4)3(LVP) powder (LVP@G) is synthesized via a two-step solid-state-reaction process. The graphene is converted in-situ from polyvinyl alcohol (PVA) or citric acid as a carbon source with the VOx-containing intermediate product as a catalyst. The results of two carbon sources (PVA and citric acid) are compared. X-ray diffraction, scanning/transmission electron microscopy and Raman spectroscopy are employed to study the compositions and structures. Cyclic voltammetry, galvanostatic cell cycling and electrochemical impedance spectroscopy are used to characterize the electrochemical performances. It is found that citric acid as a comparative carbon source leads to less amount of carbon residue than PVA. Also, the degree of graphitization of the carbon from citric acid is smaller than that from PVA. The LVP@G formed with PVA as the carbon source delivers a superb rate electrochemical performance with discharge capacity of 112.7 mAh·g−1at 20C rate in the voltage range of 3.0–4.8 V. © 2017 Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25373]
专题	中国科学院上海硅酸盐研究所
作者单位	1.CAS Key Laboratory of Materials for Energy Conversions, Department of Materials Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei; Anhui; 230026, China; 2.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
推荐引用方式 GB/T 7714	Hu, Qiao,Zou, Bang-Kun,Liao, Jia-Ying,et al. Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process[J]. Journal of Alloys and Compounds,2017,717:1-7.
APA	Hu, Qiao,Zou, Bang-Kun,Liao, Jia-Ying,Yu, Mu-Fan,Wen, Zhao-Yin,&Chen, Chunhua.(2017).Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process.Journal of Alloys and Compounds,717,1-7.
MLA	Hu, Qiao,et al."Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process".Journal of Alloys and Compounds 717(2017):1-7.