Structural and electrochemical performance of three-dimensional Li[Mn.sub.2][O.sub.4] thin film

Li[Mn.sub.2][O.sub.4] thin films with three-dimensional (3D) structure were prepared by the sol-gel method. Polystyrene beads (300 nm) were dispersed in the form of monolayers on Pt/Ti/Si[O.sub.2]/Si substrates, which were then used as templates for fabricating three-dimensionally ordered electrodes...

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Veröffentlicht in:Journal of materials science 2010-07, Vol.45 (14), p.3947
Hauptverfasser: Park, Bo Gun, Kim, Soohyun, Kim, Il-Doo, Park, Yong Joon
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Sprache:eng
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Zusammenfassung:Li[Mn.sub.2][O.sub.4] thin films with three-dimensional (3D) structure were prepared by the sol-gel method. Polystyrene beads (300 nm) were dispersed in the form of monolayers on Pt/Ti/Si[O.sub.2]/Si substrates, which were then used as templates for fabricating three-dimensionally ordered electrodes. A coating solution prepared from acetylacetonate sources was dropped on the template-deposited substrates, which were then calcinated at 400 °C. The templates were removed by calcinations, and a 3D structure was formed through an annealing process. The discharge capacity of the 3D Li[Mn.sub.2][O.sub.4] films was 1.63-3.03 µAh [cm.sup.-2]. The capacity loss over 100 cycles was approximately 18%, however, the 3D structure was not destroyed during cycling.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-010-4460-1