Detail publikace

Performance improvement on LiFePO4/C composite cathode for lithium-ion batteries

ČECH, O. STRAKOVÁ FEDORKOVÁ, A. SEDLAŘÍKOVÁ, M. VONDRÁK, J.

Originální název

Performance improvement on LiFePO4/C composite cathode for lithium-ion batteries

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Temperature glycine assisted solid-state synthesis was used to prepare LiFePO4/C composite samples with two types of material improvements. It will be shown how can addition of a high conductive support as well as doping with supervalent metal ions improve the electrochemical performance of Li-ion cathode. Three samples with different properties were prepared and investigated – pure LiFePO4/C with no material improvements, LiFePO4/C prepared with multi walled carbon nanotubes (MWCNT) conductive support and LiFePO4/C doped by 1% of cobalt. Glycine was used as inorganic carbon coating precursor during the synthesis of all samples. XRD measurements confirmed production of highly crystalline LiFePO4 cathode material with diameter varying between 40 nm and 200 nm. Electrochemical measurements confirmed increasing the intra-particle conductivity by MWCNT or Co doping. Galvanostatic battery testing shows that LiFePO4/MWCNT/C composite delivers highest capacity 130 mA h 1/g at C/5. LiFePO4/MWCNT/C cathode material prepared by solid state synthesis exhibit excellent electrochemical performances, improved conductivity, and good rate capability compared to the LiFePO4/C composite material.

Klíčová slova

lithium, ion, lifepo4, carbon, nanotubes, MWCNT, nano, electrode, cobalt

Autoři

ČECH, O.; STRAKOVÁ FEDORKOVÁ, A.; SEDLAŘÍKOVÁ, M.; VONDRÁK, J.

Rok RIV

2013

Vydáno

1. 6. 2013

Nakladatel

Elsevier

Místo

Francie

ISSN

1293-2558

Periodikum

SOLID STATE SCIENCES

Ročník

20

Číslo

1

Stát

Francouzská republika

Strany od

110

Strany do

114

Strany počet

5

BibTex

@article{BUT99725,
  author="Ondřej {Čech} and Andrea {Straková Fedorková} and Marie {Sedlaříková} and Jiří {Vondrák}",
  title="Performance improvement on LiFePO4/C composite cathode for lithium-ion batteries",
  journal="SOLID STATE SCIENCES",
  year="2013",
  volume="20",
  number="1",
  pages="110--114",
  issn="1293-2558"
}