Characterization and Performance of LiFePO4 Thin Film Cathodes prepared with Radio-Frequency Magnetron-Sputter Deposition
- Tennessee Technological University
- ORNL
LiFePO4 films with a thickness of 1{micro}m were deposited on a stainless steel substrate by radio-frequency magnetron sputtering of a LiFePO{sub 4}/carbon composite target. Raman spectra revealed the presence of carbon in the film, which increased the electronic conductivity of the film relative to reports of the carbon-free material. X-ray diffraction revealed that the films were well crystallized, free of second phases, and may have a texture with a (011) orientation. The LiFePO{sub 4} plus carbon film showed a good capacity and rate capability at 25 and -20 C when cycled as the cathode of a lithium battery, although the film was still inferior to the carbon-coated LiFePO{sub 4} powder electrodes with 0.5 {micro}m particle size.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 931746
- Journal Information:
- Journal of the Electrochemical Society, Vol. 154, Issue 8; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of O{sub 2} gas partial pressure on mechanical properties of Al{sub 2}O{sub 3} films deposited by inductively coupled plasma-assisted radio frequency magnetron sputtering
Fluorine-doped tin dioxide thin films prepared by radio-frequency magnetron sputtering