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The use of various dicarboxylic acids as a carbon source for the preparation of LiFePO4/C composite

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2015
1802.pdf (1.242Mb)
Authors
Kuzmanović, Maja
Jugović, Dragana
Mitrić, Miodrag
Jokić, Bojan
Cvjetićanin, Nikola
Uskoković, Dragan
Article (Accepted Version)
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Abstract
Olivine-type LiFePO4 composite powders with carbon were synthesized by freeze drying and subsequent thermal annealing. The main purpose of the research is to explore how various dicarboxylic acids as carbon sources influence the electrochemical properties of the resulting composites. Three dicarboxylic acids (oxalic, malonic, and adipic) were used as a carbon source. The synthesis was followed by X-ray powder diffraction, scanning electron microscopy, particle-size analysis, and electrochemical experiments. It is shown that the amount of the in situ formed carbon depends on the thermal behaviour of the acids in inert atmosphere rather than on their carbon content. Cyclic voltammetry experiments and galvanostatic cycling illustrate the behaviour of different powders: the powder obtained with oxalic acid yields the highest discharge capacity at small currents, while the one obtained with adipic acid shows better high-current response. Malonic acid has turned out to be a poor carbon sourc...e and it consequently yields powder with poor electrochemical performance.

Keywords:
composites / diffusion / LiFePO4 / electrodes
Source:
Ceramics International, 2015, 41, 5, Part B, 6753-6758
Publisher:
  • Elsevier
Projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
  • Magnetic and radionuclide labeled nanostructured materials for medical applications (RS-45015)
Note:
  • This is the peer-reviewed version of the paper:Kuzmanović, M., Jugović, D., Mitrić, M., Jokić, B., Cvjetićanin, N., Uskoković, D., 2015. The use of various dicarboxylic acids as a carbon source for the preparation of LiFePO4/C composite. Ceramics International 41, 6753–6758. https://doi.org/10.1016/j.ceramint.2015.01.121

DOI: 10.1016/j.ceramint.2015.01.121

ISSN: 0272-8842

WoS: 000353176400010

Scopus: 2-s2.0-84925177647
[ Google Scholar ]
13
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URI
http://dais.sanu.ac.rs/123456789/15434
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

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