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Title: Synthesis and characterization of a nanocomposite of goethite nanorods and reduced graphene oxide for electrochemical capacitors

Abstract

We report a one-step synthesis of a nanocomposite of goethite ({alpha}-FeOOH) nanorods and reduced graphene oxide (RGO) using a solution method in which ferrous cations serve as a reducing agent of graphite oxide (GO) to graphene and a precursor to grow goethite nanorods. As-prepared goethite nanorods have an average length of 200 nm and a diameter of 30 nm and are densely attached on both sides of the RGO sheets. The electrochemical properties of the nanocomposite were characterized by cyclic voltammetry (CV) and chronopotentiometry (CP) charge-discharge tests. The results showed that goethite/RGO composites have a high electrochemical capacitance of 165.5 F g{sup -1} with an excellent recycling capability making the material promising for electrochemical capacitors. - Graphical abstract: The reduced graphene oxide sheets are decorated with goethite nanorods. The as-prepared composite exhibits a high electrochemical capacitance with good recycling capability, which is promising for supercapacitor applications. Higlights: Black-Right-Pointing-Pointer Ferrous ions act as reductant of graphite oxide and precursor of goethite nanorods. Black-Right-Pointing-Pointer Goethite nanorods are attached on both sides of the reduced graphene oxide sheets. Black-Right-Pointing-Pointer Composite exhibits a high specific capacitance and a good recycling capability. Black-Right-Pointing-Pointer Composite is promising for supercapacitor applications.

Authors:
 [1];  [2];  [1]
  1. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)
  2. Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich (Switzerland)
Publication Date:
OSTI Identifier:
21612871
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 185; Other Information: DOI: 10.1016/j.jssc.2011.11.020; PII: S0022-4596(11)00623-2; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CAPACITANCE; CATIONS; COMPOSITE MATERIALS; ELECTROCHEMISTRY; GOETHITE; GRAPHITE; NANOSTRUCTURES; OXIDES; RECYCLING; REDUCING AGENTS; SYNTHESIS; VOLTAMETRY; CARBON; CHALCOGENIDES; CHARGED PARTICLES; CHEMISTRY; ELECTRICAL PROPERTIES; ELEMENTS; IONS; MATERIALS; MINERALS; NONMETALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES

Citation Formats

Qingliang, Shou, Cheng Jipeng, E-mail: chengjp@zju.edu.cn, Zhang Li, E-mail: lizhang@ethz.ch, Nelson, Bradley J, and Xiaobin, Zhang. Synthesis and characterization of a nanocomposite of goethite nanorods and reduced graphene oxide for electrochemical capacitors. United States: N. p., 2012. Web. doi:10.1016/j.jssc.2011.11.020.
Qingliang, Shou, Cheng Jipeng, E-mail: chengjp@zju.edu.cn, Zhang Li, E-mail: lizhang@ethz.ch, Nelson, Bradley J, & Xiaobin, Zhang. Synthesis and characterization of a nanocomposite of goethite nanorods and reduced graphene oxide for electrochemical capacitors. United States. doi:10.1016/j.jssc.2011.11.020.
Qingliang, Shou, Cheng Jipeng, E-mail: chengjp@zju.edu.cn, Zhang Li, E-mail: lizhang@ethz.ch, Nelson, Bradley J, and Xiaobin, Zhang. Sun . "Synthesis and characterization of a nanocomposite of goethite nanorods and reduced graphene oxide for electrochemical capacitors". United States. doi:10.1016/j.jssc.2011.11.020.
@article{osti_21612871,
title = {Synthesis and characterization of a nanocomposite of goethite nanorods and reduced graphene oxide for electrochemical capacitors},
author = {Qingliang, Shou and Cheng Jipeng, E-mail: chengjp@zju.edu.cn and Zhang Li, E-mail: lizhang@ethz.ch and Nelson, Bradley J and Xiaobin, Zhang},
abstractNote = {We report a one-step synthesis of a nanocomposite of goethite ({alpha}-FeOOH) nanorods and reduced graphene oxide (RGO) using a solution method in which ferrous cations serve as a reducing agent of graphite oxide (GO) to graphene and a precursor to grow goethite nanorods. As-prepared goethite nanorods have an average length of 200 nm and a diameter of 30 nm and are densely attached on both sides of the RGO sheets. The electrochemical properties of the nanocomposite were characterized by cyclic voltammetry (CV) and chronopotentiometry (CP) charge-discharge tests. The results showed that goethite/RGO composites have a high electrochemical capacitance of 165.5 F g{sup -1} with an excellent recycling capability making the material promising for electrochemical capacitors. - Graphical abstract: The reduced graphene oxide sheets are decorated with goethite nanorods. The as-prepared composite exhibits a high electrochemical capacitance with good recycling capability, which is promising for supercapacitor applications. Higlights: Black-Right-Pointing-Pointer Ferrous ions act as reductant of graphite oxide and precursor of goethite nanorods. Black-Right-Pointing-Pointer Goethite nanorods are attached on both sides of the reduced graphene oxide sheets. Black-Right-Pointing-Pointer Composite exhibits a high specific capacitance and a good recycling capability. Black-Right-Pointing-Pointer Composite is promising for supercapacitor applications.},
doi = {10.1016/j.jssc.2011.11.020},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 185,
place = {United States},
year = {2012},
month = {1}
}