Abstract
Li-Beta alumina exhibited higher ionic conductivity than other lithium aluminate phases of LiAl<sub>5</sub>O<sub>8</sub>, LiAlO<sub>2</sub> and Li<sub>5</sub>AlO<sub>4</sub> because of the special crystal structure having many conduction channels in c-plane. It is usually used as solid electrolyte in Battery. Compared with bulk and powder, Li-Beta alumina film takes advantages of decrease in area specific resistance, reduction of operating temperature, reduction of size/weight for battery and enhancement of battery cycle life. Laser chemical vapour deposition is used to achieve the first synthesis of Li-Beta alumina in form of film, which exhibits a high conductivity of 5.96 S∙m<sup>-1</sup>∙K at room temperature. In this process, the remained issue of Li loss is essential to be fixed for large-scale production.
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