Synthesis, structure and electrochemical properties of polyaniline/MoO{sub 3} nanobelt composite for lithium battery

Journal Article · Fri Feb 15 00:00:00 EST 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.11.041· OSTI ID:22215828

Chen, Wen ^[1]; Murakami, Kenji ^[2]

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1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 (China)
2. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8011 (Japan)

Graphical abstract: Hydrothermal method was introduced for the synthesis of MoO{sub 3} nanobelts and polyaniline (PANI)/MoO{sub 3} nanobelt composites. The structure and morphology of the samples were studied by X-ray diffraction (XRD), Fourier transform infrared radiation (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis. We can see the presence of polyaniline on the MoO{sub 3} nanobelts surface in the TEM pictures as shown in Fig. (a). The pure MoO{sub 3} nanobelts exhibit the initial specific capacity 276 mAhg{sup −1}, whereas PANI/MoO{sub 3} nanobelt composite shows little low initially 228 mAhg{sup −1} after that it has more stabilized specific capacity with increasing cycle numbers as shown in Fig. (b). The cyclic voltammograms of the PANI/MoO{sub 3} nanobelt composite show better cyclic performance compared to pure MoO{sub 3} nanobelts. The electrochemical impedance spectres were studied for both the pure and PANI/MoO{sub 3} samples at 2.0 and 3.5 potentials. The role of the PANI polymeric component of the composite material seems to be the stabilization of the specific capacity due to probable homogeneous distribution of the induced stress during cycling. Display Omitted Highlights: ► Hydrothermal synthesis of MoO{sub 3}, PANI/MoO{sub 3} nanobelts. ► Samples were characterised by XRD, FTIR, DSC, SEM, TEM, CV and impedance. ► MoO{sub 3} nanobelts cathode battery shows initial specific capacity 276 mAhg{sup −1}. ► PANI/MoO{sub 3} nanobelts show initial specific capacity 228 mAhg{sup −1} but high stability. ► PANI/MoO{sub 3} sample studies by impedance at the potentials of 2.0 and 3.5 V. -- Abstract: The MoO{sub 3} nanobelts and polyaniline (PANI)/MoO{sub 3} nanobelt composite were synthesized using hydrothermal method. The crystal structure and morphology of the samples were studied by X-ray diffraction (XRD), Fourier transform infrared radiation (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Differential scanning calorimetric (DSC) and thermo gravimetric (TG) measurements were carried out for PANI/MoO{sub 3} nanobelt composite. The pure MoO{sub 3} nanobelts exhibit the initial specific capacity 276 mAhg{sup −1}, whereas PANI/MoO{sub 3} nanobelt composite showed little low initially 228 mAhg{sup −1} after that it has more stabilized specific capacity with increasing cycle numbers at constant current density of 30.7 mAg{sup −1} in the potential range 1.0–4.0 V vs. Li/Li{sup +}. The electrochemical impedance profiles were also studied. The cyclic voltammograms of the PANI/MoO{sub 3} nanobelt composite showed better cyclic performance as compared with pure MoO{sub 3} nanobelts, this is due to the role of PANI polymeric component stabilization of the specific capacity by homogeneous distribution within nanobelts.

• OSTI ID: 22215828
• Journal Information: Materials Research Bulletin, Vol. 48, Issue 2; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
CALORIMETRY
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
CURRENT DENSITY
FOURIER TRANSFORMATION
HYDROTHERMAL SYNTHESIS
INFRARED RADIATION
INFRARED SPECTRA
MOLYBDENUM OXIDES
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
STABILITY
STRESSES
SURFACES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION