We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Facile Synthesis of Co<sub>3</sub>O<sub>4</sub>/Mildly Oxidized Multiwalled Carbon Nanotubes/Reduced Mildly Oxidized Graphene Oxide Ternary Composite as the Material for Supercapacitors.
- Authors
Mei-yu Lv; Kai-yu Liu; Yan Li; Lai Wei; Jian-jian Zhong; Geng Su
- Abstract
A three-dimensional (3D) Co3O4/mildly oxidized multiwalled carbon nanotubes (moCNTs)/reduced mildly oxidized graphene oxide (rmGO) ternary composite was prepared via a simple and green hydrolysishydrothermal approach by mixing Co(Ac)2 ⋅ 4H2O with moCNTs and mGO suspension in mixed ethanol/H2O. As characterized by scanning electron microscopy and transmission electron microscopy, Co3O4 nanoparticles with size of 20-100 nm and moCNTs are effectively anchored in mGO. Cyclic voltammetry and galvanostatic charge-discharge measurements were adopted to investigate the electrochemical properties of Co3O4/moCNTs/ rmGO ternary composite in 6 M KOH solution. In a potential window of 0-0.6 V vs. Hg/HgO, the composite delivers an initial specific capacitance of 492 F g-1 at 0.5 A g-1 and the capacitance remains 592 F g-1 after 2000 cycles, while the pure Co3O4 shows obviously capacitance fading, indicating that rmGO and moCNTs greatly enhance the electrochemical performance of Co3O4.
- Subjects
CARBON nanotubes; GRAPHENE oxide; HYDROLYSIS; SCANNING electron microscopy; CYCLIC voltammetry
- Publication
Bulletin of the Korean Chemical Society, 2014, Vol 35, Issue 5, p1349
- ISSN
0253-2964
- Publication type
Article
- DOI
10.5012/bkcs.2014.35.5.1349