skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Green synthesis of graphene nanosheets/ZnO composites and electrochemical properties

Abstract

A green and facile approach was demonstrated to prepare graphene nanosheets/ZnO (GNS/ZnO) composites for supercapacitor materials. Glucose, as a reducing agent, and exfoliated graphite oxide (GO), as precursor, were used to synthesize GNS, then ZnO directly grew onto conducting graphene nanosheets as electrode materials. The small ZnO particles successfully anchored onto graphene sheets as spacers to keep the neighboring sheets separate. The electrochemical performances of these electrodes were analyzed by cyclic voltammetry, electrochemical impedance spectrometry and chronopotentiometry. Results showed that the GNS/ZnO composites displayed superior capacitive performance with large capacitance (62.2 F/g), excellent cyclic performance, and maximum power density (8.1 kW/kg) as compared with pure graphene electrodes. Our investigation highlight the importance of anchoring of small ZnO particles on graphene sheets for maximum utilization of electrochemically active ZnO and graphene for energy storage application in supercapacitors. - Graphical abstract: Glucose was used to synthesize GNS, then ZnO directly grew onto conducting graphene nanosheets as electrode materials for supercapacitor. Results showed that the composites have superior capacitive performance. Highlights: > Graphene nanosheets were synthesized via using glucose as a reducing agent. > The reductant and the oxidized product are environmentally friendly. > ZnO grew onto conducting graphene sheets keeping neighboring sheetsmore » separate. > The structure improves the contact between the electrode and the electrolyte. > Results showed that these composites have good electrochemical property.« less

Authors:
 [1]; ; ; ;  [1];  [2];  [1];  [3]
  1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001 (China)
  2. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001 (China)
  3. College of Chemical Engineering, Harbin Institute of Technology, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
21580101
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 6; Other Information: DOI: 10.1016/j.jssc.2011.03.006; PII: S0022-4596(11)00103-4; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ELECTRODES; ENERGY STORAGE; GLUCOSE; GRAPHITE; NANOSTRUCTURES; PARTICLES; PERFORMANCE; POWER DENSITY; REDUCING AGENTS; SYNTHESIS; VOLTAMETRY; ZINC OXIDES; ALDEHYDES; CARBOHYDRATES; CARBON; CHALCOGENIDES; ELEMENTS; HEXOSES; MINERALS; MONOSACCHARIDES; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SACCHARIDES; STORAGE; ZINC COMPOUNDS

Citation Formats

Wang Jun, E-mail: zhqw1888@sohu.com, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zan, Gao, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zhanshuang, Li, Bin, Wang, Yanxia, Yan, Qi, Liu, Mann, Tom, Milin, Zhang, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, and Zhaohua, Jiang. Green synthesis of graphene nanosheets/ZnO composites and electrochemical properties. United States: N. p., 2011. Web. doi:10.1016/j.jssc.2011.03.006.
Wang Jun, E-mail: zhqw1888@sohu.com, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zan, Gao, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zhanshuang, Li, Bin, Wang, Yanxia, Yan, Qi, Liu, Mann, Tom, Milin, Zhang, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, & Zhaohua, Jiang. Green synthesis of graphene nanosheets/ZnO composites and electrochemical properties. United States. doi:10.1016/j.jssc.2011.03.006.
Wang Jun, E-mail: zhqw1888@sohu.com, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zan, Gao, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, Zhanshuang, Li, Bin, Wang, Yanxia, Yan, Qi, Liu, Mann, Tom, Milin, Zhang, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001, and Zhaohua, Jiang. Wed . "Green synthesis of graphene nanosheets/ZnO composites and electrochemical properties". United States. doi:10.1016/j.jssc.2011.03.006.
@article{osti_21580101,
title = {Green synthesis of graphene nanosheets/ZnO composites and electrochemical properties},
author = {Wang Jun, E-mail: zhqw1888@sohu.com and Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001 and Zan, Gao and Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001 and Zhanshuang, Li and Bin, Wang and Yanxia, Yan and Qi, Liu and Mann, Tom and Milin, Zhang and Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin 150001 and Zhaohua, Jiang},
abstractNote = {A green and facile approach was demonstrated to prepare graphene nanosheets/ZnO (GNS/ZnO) composites for supercapacitor materials. Glucose, as a reducing agent, and exfoliated graphite oxide (GO), as precursor, were used to synthesize GNS, then ZnO directly grew onto conducting graphene nanosheets as electrode materials. The small ZnO particles successfully anchored onto graphene sheets as spacers to keep the neighboring sheets separate. The electrochemical performances of these electrodes were analyzed by cyclic voltammetry, electrochemical impedance spectrometry and chronopotentiometry. Results showed that the GNS/ZnO composites displayed superior capacitive performance with large capacitance (62.2 F/g), excellent cyclic performance, and maximum power density (8.1 kW/kg) as compared with pure graphene electrodes. Our investigation highlight the importance of anchoring of small ZnO particles on graphene sheets for maximum utilization of electrochemically active ZnO and graphene for energy storage application in supercapacitors. - Graphical abstract: Glucose was used to synthesize GNS, then ZnO directly grew onto conducting graphene nanosheets as electrode materials for supercapacitor. Results showed that the composites have superior capacitive performance. Highlights: > Graphene nanosheets were synthesized via using glucose as a reducing agent. > The reductant and the oxidized product are environmentally friendly. > ZnO grew onto conducting graphene sheets keeping neighboring sheets separate. > The structure improves the contact between the electrode and the electrolyte. > Results showed that these composites have good electrochemical property.},
doi = {10.1016/j.jssc.2011.03.006},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 6,
volume = 184,
place = {United States},
year = {2011},
month = {6}
}