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Synthesis of graphene-modified Li3V2(PO4)3with superior electrochemical properties via a catalytic solid-state-reaction process
Hu, Qiao1; Zou, Bang-Kun1; Liao, Jia-Ying1; Yu, Mu-Fan1; Wen, Zhao-Yin2; Chen, Chunhua1
2017
Source PublicationJournal of Alloys and Compounds
ISSN09258388
Volume717Pages:1-7
AbstractA 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.
DOI10.1016/j.jallcom.2017.04.313
EI Accession Number20172003663985
EI KeywordsElectrochemical impedance spectroscopy
EI Classification Number701.1 Electricity: Basic Concepts and Phenomena - 702.1.1 Primary Batteries - 702.3 Solar Cells - 761 Nanotechnology - 801 Chemistry - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25373
Collection中国科学院上海硅酸盐研究所
Affiliation1.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
Recommended Citation
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.
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