Influence of Poly(Vinylpyrrolidone) on the Synthesis of LiV3O8/LiV2O5 by Rheological Phase Reaction Method for Supercapacitor Application.

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Bibliographic Details
Title:	Influence of Poly(Vinylpyrrolidone) on the Synthesis of LiV3O8/LiV2O5 by Rheological Phase Reaction Method for Supercapacitor Application.
Authors:	Pavithra, S.¹, Kumar, P. Senthil², Kathirvel, V.³, Rajesh, S.¹, Sakunthala, A.¹ meetsaku@gmail.com
Source:	Journal of Electronic Materials. Jun2023, Vol. 52 Issue 6, p3963-3982. 20p.
Subjects:	Aqueous electrolytes, Metallic oxides, Scanning electron microscopy
Abstract:	A facile rheological phase reaction (RPR) approach has been used to synthesize the LiV3O8/LiV2O5 (LVO) mixed phase metal oxide for aqueous supercapacitor application. The influence of poly(vinylpyrrolidone) (PVP) on the synthesized LiV3O8/LiV2O5 mixed phase metal oxide was studied. PVP added LiV3O8/LiV2O5 (PLVO) was found to have dense nanowires as observed from field-emission scanning electron microscopy (FESEM) analysis, which was by the influence of PVP in synthesis process. Energy dispersive x-ray (EDAX) analysis shows the formation of more oxygen vacancies and carbon sites in the PLVO. For a current density of 1A/g, the above material exhibited a high initial specific capacitance of 194 F/g in a three-electrode cell with 1 M LiNO3 aqueous electrolyte. The material exhibited an excellent cyclic stability of 72.53%, even after 5000 cycles at a current density of 5 A/g. The morphology of the material was found to play a prominent role in the high capacitance and cyclic ability. Symmetric supercapacitor constructed using PLVO showed a highest specific capacitance of 120 F/g at 0.25 A/g, with 72.87% capacitance retention at 1 A/g after 150 cycles. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	A facile rheological phase reaction (RPR) approach has been used to synthesize the LiV3O8/LiV2O5 (LVO) mixed phase metal oxide for aqueous supercapacitor application. The influence of poly(vinylpyrrolidone) (PVP) on the synthesized LiV3O8/LiV2O5 mixed phase metal oxide was studied. PVP added LiV3O8/LiV2O5 (PLVO) was found to have dense nanowires as observed from field-emission scanning electron microscopy (FESEM) analysis, which was by the influence of PVP in synthesis process. Energy dispersive x-ray (EDAX) analysis shows the formation of more oxygen vacancies and carbon sites in the PLVO. For a current density of 1A/g, the above material exhibited a high initial specific capacitance of 194 F/g in a three-electrode cell with 1 M LiNO3 aqueous electrolyte. The material exhibited an excellent cyclic stability of 72.53%, even after 5000 cycles at a current density of 5 A/g. The morphology of the material was found to play a prominent role in the high capacitance and cyclic ability. Symmetric supercapacitor constructed using PLVO showed a highest specific capacitance of 120 F/g at 0.25 A/g, with 72.87% capacitance retention at 1 A/g after 150 cycles. [ABSTRACT FROM AUTHOR]
ISSN:	03615235
DOI:	10.1007/s11664-023-10384-z