One-step hydrothermal synthesis of Graphene decorated V2O5 nanobelts for enhanced electrochemical energy storage

Minoh Lee; Suresh Kannan Balasingam; Hu Young Jeong; Won G. Hong; Han Bo Ram Lee; Byung Hoon Kim; Yongseok Jun

doi:10.1038/srep08151

One-step hydrothermal synthesis of Graphene decorated V₂O₅ nanobelts for enhanced electrochemical energy storage

Minoh Lee, Suresh Kannan Balasingam, Hu Young Jeong, Won G. Hong, Han Bo Ram Lee, Byung Hoon Kim, Yongseok Jun

Research output: Contribution to journal › Article › peer-review

209 Citations (Scopus)

Abstract

Graphene-decorated V₂O₅ nanobelts (GVNBs) were synthesized via a low-temperature hydrothermal method in a single step. V₂O₅ nanobelts (VNBs) were formed in the presence of graphene oxide, a mild oxidant, which also enhanced the conductivity of GVNBs. From the electron energy loss spectroscopy analysis, the reduced graphene oxide (rGO) are inserted into the layered crystal structure of V₂O₅ nanobelts, which further confirmed the enhanced conductivity of the nanobelts. The electrochemical energy-storage capacity of GVNBs was investigated for supercapacitor applications. The specific capacitance of GVNBs was evaluated using cyclic voltammetry (CV) and charge/discharge (CD) studies. The GVNBs having V₂O₅-rich composite, namely, V₃G₁ (VO/GO 5 351), showed superior specific capacitance in comparison to the other composites (V₁G₁ and V₁G₃) and the pure materials. Moreover, the V₃G₁ composite showed excellent cyclic stability and the capacitance retention of about 82% was observed even after 5000 cycles.

Original language	English
Article number	8151
Journal	Scientific reports
Volume	5
DOIs	https://doi.org/10.1038/srep08151
Publication status	Published - 2015 Jan 30
Externally published	Yes

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) funded by the Korean government, MSIP (2013R1A1A2059244). B.H.K. and H.-B.-R. L. were supported by the Incheon National University Research Grant in 20141308. We would like to thank Mr. R. Ananthakumar, Jeju National University, Republic of Korea for the assistance of specific capacitance calculations.

ASJC Scopus subject areas

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10.1038/srep08151

Cite this

@article{ce35ac0b1903489eb1ee7ee963c811e8,

title = "One-step hydrothermal synthesis of Graphene decorated V2O5 nanobelts for enhanced electrochemical energy storage",

abstract = "Graphene-decorated V2O5 nanobelts (GVNBs) were synthesized via a low-temperature hydrothermal method in a single step. V2O5 nanobelts (VNBs) were formed in the presence of graphene oxide, a mild oxidant, which also enhanced the conductivity of GVNBs. From the electron energy loss spectroscopy analysis, the reduced graphene oxide (rGO) are inserted into the layered crystal structure of V2O5 nanobelts, which further confirmed the enhanced conductivity of the nanobelts. The electrochemical energy-storage capacity of GVNBs was investigated for supercapacitor applications. The specific capacitance of GVNBs was evaluated using cyclic voltammetry (CV) and charge/discharge (CD) studies. The GVNBs having V2O5-rich composite, namely, V3G1 (VO/GO 5 351), showed superior specific capacitance in comparison to the other composites (V1G1 and V1G3) and the pure materials. Moreover, the V3G1 composite showed excellent cyclic stability and the capacitance retention of about 82% was observed even after 5000 cycles.",

author = "Minoh Lee and Balasingam, {Suresh Kannan} and Jeong, {Hu Young} and Hong, {Won G.} and Lee, {Han Bo Ram} and Kim, {Byung Hoon} and Yongseok Jun",

note = "Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Korean government, MSIP (2013R1A1A2059244). B.H.K. and H.-B.-R. L. were supported by the Incheon National University Research Grant in 20141308. We would like to thank Mr. R. Ananthakumar, Jeju National University, Republic of Korea for the assistance of specific capacitance calculations.",

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doi = "10.1038/srep08151",

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T1 - One-step hydrothermal synthesis of Graphene decorated V2O5 nanobelts for enhanced electrochemical energy storage

AU - Lee, Minoh

AU - Balasingam, Suresh Kannan

AU - Jeong, Hu Young

AU - Hong, Won G.

AU - Lee, Han Bo Ram

AU - Kim, Byung Hoon

AU - Jun, Yongseok

N1 - Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Korean government, MSIP (2013R1A1A2059244). B.H.K. and H.-B.-R. L. were supported by the Incheon National University Research Grant in 20141308. We would like to thank Mr. R. Ananthakumar, Jeju National University, Republic of Korea for the assistance of specific capacitance calculations.

PY - 2015/1/30

Y1 - 2015/1/30

N2 - Graphene-decorated V2O5 nanobelts (GVNBs) were synthesized via a low-temperature hydrothermal method in a single step. V2O5 nanobelts (VNBs) were formed in the presence of graphene oxide, a mild oxidant, which also enhanced the conductivity of GVNBs. From the electron energy loss spectroscopy analysis, the reduced graphene oxide (rGO) are inserted into the layered crystal structure of V2O5 nanobelts, which further confirmed the enhanced conductivity of the nanobelts. The electrochemical energy-storage capacity of GVNBs was investigated for supercapacitor applications. The specific capacitance of GVNBs was evaluated using cyclic voltammetry (CV) and charge/discharge (CD) studies. The GVNBs having V2O5-rich composite, namely, V3G1 (VO/GO 5 351), showed superior specific capacitance in comparison to the other composites (V1G1 and V1G3) and the pure materials. Moreover, the V3G1 composite showed excellent cyclic stability and the capacitance retention of about 82% was observed even after 5000 cycles.

AB - Graphene-decorated V2O5 nanobelts (GVNBs) were synthesized via a low-temperature hydrothermal method in a single step. V2O5 nanobelts (VNBs) were formed in the presence of graphene oxide, a mild oxidant, which also enhanced the conductivity of GVNBs. From the electron energy loss spectroscopy analysis, the reduced graphene oxide (rGO) are inserted into the layered crystal structure of V2O5 nanobelts, which further confirmed the enhanced conductivity of the nanobelts. The electrochemical energy-storage capacity of GVNBs was investigated for supercapacitor applications. The specific capacitance of GVNBs was evaluated using cyclic voltammetry (CV) and charge/discharge (CD) studies. The GVNBs having V2O5-rich composite, namely, V3G1 (VO/GO 5 351), showed superior specific capacitance in comparison to the other composites (V1G1 and V1G3) and the pure materials. Moreover, the V3G1 composite showed excellent cyclic stability and the capacitance retention of about 82% was observed even after 5000 cycles.

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