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Direct electrodeposition of aluminium nano-rods

2008; Elsevier BV; Volume: 10; Issue: 10 Linguagem: Inglês

10.1016/j.elecom.2008.07.032

1873-1902

Emilie Perre, Leif Nyholm, Torbjörn Gustafsson, Pierre‐Louis Taberna, Patrice Simon, Kristina Edström,

Nanowire Synthesis and Applications

Electrodeposition of aluminium within an alumina nano-structured template, for use as high surface area current collectors in Li-ion microbatteries, was investigated. The aluminium electrodeposition was carried out in the ionic liquid 1-ethyl-3-methylimidazolium chloride:aluminium chloride (1:2 ratio). First the aluminium electrodeposition process was confirmed by combined cyclic voltammetry and electrochemical quartz crystal microbalance measurements. Then, aluminium was electrodeposited under pulsed-potential conditions within ordered alumina membranes. A careful removal of the alumina template unveiled free standing arrays of aluminium nano-rods. The nano-columns shape and dimensions are directly related to the template dimensions. To our knowledge, this is the first time that direct electrodeposition of aluminium nano-pillars onto an aluminium substrate is reported.