Among the energy storage systems currently under development, lithium-ion batteries with all solid state components represent a quantum leap with a view to applications where safety and the efficient use of the materials are indispensable. Obtaining materials for the future solid state battery by alternative strategies may increase several times the current energy density of lithium-ion batteries while reducing manufacturing costs. Nanostructured films can be generated directly on a substrate by electrochemical methods, which offer several advantages such as control of layer thickness and content of active material, without the use of binding and conducting additives. Binary and ternary Fe-Co-Ni alloys are prepared by an electrodeposition method. By subsequent thermal treatments, the resulting films were oxidized. The annealed deposits are oxides with a different crystallinity depending on the electrodeposition time. Cycling studies in lithium test cells show the smallest discharge polarization ever reported during the conversion reactions of metal oxides.

Nanostructured materials for advanced batteries prepared by electrochemical procedures

243rd National Meeting (2012)

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