Abstract
Three dimensionally ordered macroporous structure (3DOM) has characteristic features such as large surface area and open pores. Therefore, a composite electrode between active material and 3DOM electrolyte is anticipated to compensate small contact area between solid electrolyte and solid electrode. In this paper, electrochemical properties of TiO2/3DOM Li1.5Al0.5Ti1.5(PO4)3 (LATP) composite anode were examined. The TiO2/3DOM LATP composite was successfully prepared by colloidal crystal templating method and sol-gel method. The composite demonstrated clear charge and discharge plateau at 1.8 V vs. Li/Li+ attributed to redox of anatase TiO2, implying that the composite can be used as anode for lithium battery. Annealing temperature strongly affected on performance of the composite. The discharge capacity of composite annealing at 600°C was 89 mA h g-1 and this is higher than that annealed at 450°C. It is expected that fabrication of all-solid-state battery with better performance would be achieved by using TiO2/3DOM LATP anode.
