Anatase Inverse Opal: Preparation and Electrochemical Properties

摘要

Anatase inverse opal was synthesized both in the powder form and in the thin layer by means of templating with latex spheres. The voids between close-packed latex particles were filled via deposition from the titanium (Ⅳ) isopropoxide solution, electrochemical deposition from the solution of TiCl_3, and liquid phase deposition from the (NH_4)_2TiF_6 solution. The resulting material exhibited a regular fcc ordering of macropores surrounded with the framework consisting of the anatase nanocrystallites of 20 nm in size. Electrochemical performance for lithium insertion of anatase inverse opal was sluggish compared to that of non-templated anatase with more dense packing of nanocrystals.