Next Article in Journal
Self-Powered Wearable Pressure Sensors with Enhanced Piezoelectric Properties of Aligned P(VDF-TrFE)/MWCNT Composites for Monitoring Human Physiological and Muscle Motion Signs
Previous Article in Journal
Charge Transfer Tuned by the Surrounding Dielectrics in TiO2-Ag Composite Arrays
Previous Article in Special Issue
Encapsulation of Cinnamon Essential Oil for Active Food Packaging Film with Synergistic Antimicrobial Activity
Open AccessArticle

VO2(B)/Graphene Composite-Based Symmetrical Supercapacitor Electrode via Screen Printing for Intelligent Packaging

1
School of Printing and Packaging, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China
2
Department of Food Science and Agriculture Chemistry, McGill University, 21111 Lakeshore, Ste Anne de Bellevue, Quebec, QC H9X3V9, Canada
3
College of Chemistry and Molecular Sciences, Wuhan University, No. 299, Av. Bayi, Wuhan 430072, Hubei, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Nanomaterials 2018, 8(12), 1020; https://doi.org/10.3390/nano8121020
Received: 28 October 2018 / Revised: 23 November 2018 / Accepted: 4 December 2018 / Published: 7 December 2018
(This article belongs to the Special Issue Bionanocomposite Packaging: Towards the Improvement of Food Safety)
More multipurpose and convenient demand driven by Radio Frequency Identification (RFID) and intelligent packaging require flexible power sources. A VO2(B)/graphene (VO2(B)/GN) core-shell composite was successfully synthesized by the hydrothermal treatment with V2O5 and graphite. The as-obtained sample was characterized by XRD, FT-IR, SEM, TEM, and XPS measurements. In addition, the electrochemical properties of VO2(B)/GN were tested. Due to its great electrochemical performance and mechanical properties, graphene could increase the electrochemical performance and strengthen the structural stability of the material at the same time. With increasing loading amount of GN, the specific capacitance of VO2(B)/GN increased correspondingly. With 20% GN loading, the initial discharge specific capacity could reach 197 F g−1 at 0.5 A g−1, and 160 F g−1 at 1 A g−1 in 0.5 M Na2SO4 electrolyte, which is better than that of pure rod-like VO2(B). The capacitance of the VO2(B)/GN (20%) composite electrode retains 95.49% after 1000 cycles, which is higher than that of a pure VO2(B) electrode (85.43%), indicating that the VO2(B)/GN composite possesses better cycling stability. Moreover, a symmetrical solid-state supercapacitor (SCs) using VO2(B)/GN(20%) as the anode was assembled. Four printed SCs were connected in series to light up a 1.5 V red LED. This demonstrates its potential application in intelligent packaging to trace food safety. View Full-Text
Keywords: VO2(B)/GN core-shell composites; screen printing; symmetrical supercapacitor; flexible energy storage devices; intelligent packaging VO2(B)/GN core-shell composites; screen printing; symmetrical supercapacitor; flexible energy storage devices; intelligent packaging
Show Figures

Graphical abstract

MDPI and ACS Style

Zhang, J.; Chen, L.; Wang, Y.; Cai, S.; Yang, H.; Yu, H.; Ding, F.; Huang, C.; Liu, X. VO2(B)/Graphene Composite-Based Symmetrical Supercapacitor Electrode via Screen Printing for Intelligent Packaging. Nanomaterials 2018, 8, 1020.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop