Enhanced electrochemical performance of LiVPO4F/f-graphene composite electrode prepared via ionothermal process

Handle URI:
http://hdl.handle.net/10754/622193
Title:
Enhanced electrochemical performance of LiVPO4F/f-graphene composite electrode prepared via ionothermal process
Authors:
Rangaswamy, Puttaswamy; Shetty, Vijeth Rajshekar; Suresh, Gurukar Shivappa; Mahadevan, Kittappa Malavalli; Nagaraju, Doddahalli H.
Abstract:
Abstract: In this article, we report the synthesis of 1,2-dimethyl-3-(3-hydroxypropyl) imidazolium dicyanamide ionic liquid and its used as a reaction medium for low-temperature synthesis of triclinic LiVPOF electrode material. Structural and morphological features of LiVPOF were characterized using X-ray diffraction and scanning electron microscopy techniques. The electrochemical studies have been investigated using cyclic voltammetry, galvanostatic charge/discharge studies, and electrochemical impedance spectroscopic techniques. The ionothermally obtained LiVPOF is modified to LiVPOF/f-graphene composite electrode to obtain high specific capacity, better rate performance, and longer cycle life. Even after 250 cycles, the LiVPOF/f-graphene composite electrode exhibited a specific capacity more than 84 % with good reversible de-intercalation/intercalation of Li-ions. This article also provides the comparative electrochemical performances of LiVPOF/f-graphene composite, LiVPOF/carbon, and LiVPOF/graphene composite electrodes in a nonaqueous rechargeable Li-ion battery system. Graphical Abstract: [Figure not available: see fulltext.]
KAUST Department:
King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
Citation:
Rangaswamy P, Shetty VR, Suresh GS, Mahadevan KM, Nagaraju DH (2016) Enhanced electrochemical performance of LiVPO4F/f-graphene composite electrode prepared via ionothermal process. Journal of Applied Electrochemistry. Available: http://dx.doi.org/10.1007/s10800-016-1007-4.
Publisher:
Springer Nature
Journal:
Journal of Applied Electrochemistry
Issue Date:
13-Oct-2016
DOI:
10.1007/s10800-016-1007-4
Type:
Article
ISSN:
0021-891X; 1572-8838
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorRangaswamy, Puttaswamyen
dc.contributor.authorShetty, Vijeth Rajshekaren
dc.contributor.authorSuresh, Gurukar Shivappaen
dc.contributor.authorMahadevan, Kittappa Malavallien
dc.contributor.authorNagaraju, Doddahalli H.en
dc.date.accessioned2017-01-02T08:42:37Z-
dc.date.available2017-01-02T08:42:37Z-
dc.date.issued2016-10-13en
dc.identifier.citationRangaswamy P, Shetty VR, Suresh GS, Mahadevan KM, Nagaraju DH (2016) Enhanced electrochemical performance of LiVPO4F/f-graphene composite electrode prepared via ionothermal process. Journal of Applied Electrochemistry. Available: http://dx.doi.org/10.1007/s10800-016-1007-4.en
dc.identifier.issn0021-891Xen
dc.identifier.issn1572-8838en
dc.identifier.doi10.1007/s10800-016-1007-4en
dc.identifier.urihttp://hdl.handle.net/10754/622193-
dc.description.abstractAbstract: In this article, we report the synthesis of 1,2-dimethyl-3-(3-hydroxypropyl) imidazolium dicyanamide ionic liquid and its used as a reaction medium for low-temperature synthesis of triclinic LiVPOF electrode material. Structural and morphological features of LiVPOF were characterized using X-ray diffraction and scanning electron microscopy techniques. The electrochemical studies have been investigated using cyclic voltammetry, galvanostatic charge/discharge studies, and electrochemical impedance spectroscopic techniques. The ionothermally obtained LiVPOF is modified to LiVPOF/f-graphene composite electrode to obtain high specific capacity, better rate performance, and longer cycle life. Even after 250 cycles, the LiVPOF/f-graphene composite electrode exhibited a specific capacity more than 84 % with good reversible de-intercalation/intercalation of Li-ions. This article also provides the comparative electrochemical performances of LiVPOF/f-graphene composite, LiVPOF/carbon, and LiVPOF/graphene composite electrodes in a nonaqueous rechargeable Li-ion battery system. Graphical Abstract: [Figure not available: see fulltext.]en
dc.publisherSpringer Natureen
dc.subject1,2-Dimethyl-3-(3-hydroxypropyl) imidazolium dicyanamideen
dc.subjectCarboxyl functionalized grapheneen
dc.subjectLiVPO4Fen
dc.subjectNonaqueous rechargeable lithium-ion batteryen
dc.titleEnhanced electrochemical performance of LiVPO4F/f-graphene composite electrode prepared via ionothermal processen
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabiaen
dc.identifier.journalJournal of Applied Electrochemistryen
dc.contributor.institutionDepartment of Chemistry and Research Center, N.M.K.R.V. College for Women, Jayanagar, III Block, Bangalore, 560 011, Indiaen
dc.contributor.institutionPG-Center, Kuvempu University, Kadur, Karnataka, 577548, Indiaen
kaust.authorNagaraju, Doddahalli H.en
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