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 = 3:1), 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.
authors: Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors: Minoh
authors: M
authors: Lee
authors: Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors: Suresh Kannan
authors: SK
authors: Balasingam
authors: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors: Hu Young
authors: HY
authors: Jeong
authors: Division of Materials Science, Korea Basic Science Institute, Daejeon 305-333, Republic of Korea.
authors: Won G
authors: WG
authors: Hong
authors: Department of Materials Science and Engineering, Incheon National University, Incheon 406-772, Republic of Korea.
authors: Han-Bo-Ram
authors: HB
authors: Lee
authors: Department of Physics, Incheon National University, Incheon 406-772, Republic of Korea.
authors: Byung Hoon
authors: BH
authors: Kim
authors: Department of Materials Chemistry &Engineering, Konkuk University, Seoul 143-701, Republic of Korea.
authors: Yongseok
authors: Y
authors: Jun
references: Nanoscale. 2014 Oct 7;6(19):11066-71
references: 25145568
references: Chem Soc Rev. 2013 Apr 7;42(7):3088-113
references: 23361617
references: Nano Lett. 2008 Jan;8(1):323-7
references: 18069877
references: Chem Asian J. 2012 Apr;7(4):684-7
references: 22271655
references: Adv Mater. 2014 Jun 4;26(21):3368-97
references: 24700719
references: J Am Chem Soc. 2013 Jun 12;135(23):8720-5
references: 23679353
references: Science. 2009 Jun 19;324(5934):1530-4
references: 19541989
references: Nat Mater. 2005 May;4(5):366-77
references: 15867920
references: Angew Chem Int Ed Engl. 2005 Jul 11;44(28):4391-5
references: 15942965
references: J Am Chem Soc. 2009 Sep 2;131(34):12086-7
references: 19705911
references: J Am Chem Soc. 2002 Aug 28;124(34):10157-62
references: 12188680
references: ACS Nano. 2008 Feb;2(2):293-301
references: 19206630
references: Chem Soc Rev. 2010 Jan;39(1):228-40
references: 20023850
references: Nano Lett. 2013 Apr 10;13(4):1596-601
references: 23477543
references: J Am Chem Soc. 2004 Mar 24;126(11):3422-3
references: 15025459
references: Nat Mater. 2007 Mar;6(3):183-91
references: 17330084
references: Nat Nanotechnol. 2009 Jan;4(1):25-9
references: 19119278
references: ACS Nano. 2008 Mar;2(3):463-70
references: 19206571
references: Nat Nanotechnol. 2008 Feb;3(2):101-5
references: 18654470
references: Angew Chem Int Ed Engl. 2008;47(16):2930-46
references: 18338357
references: J Am Chem Soc. 2011 Oct 12;133(40):16291-9
references: 21888392