| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a process of producing a vanadium lithium phosphate carbon composite useful for a positive active material for lithium secondary batteries. <P>SOLUTION: There is provided the process of producing the vanadium lithium phosphate carbon composite composed of a vanadium lithium phosphate having a NASICON structure and an electroconductive carbon material. The process comprises the first step of preparing a slurry wherein a vanadium source, a source of the electroconductive carbon material, and an Me source added as necessary, (Me donates a metal element or a transition metal element having an atomic number of not less than 11 except for V) are dispersed in an aqueous solution of lithium phosphate, the second step of obtaining a reaction precursor by spray-drying the slurry, and the third step of firing the reaction precursor at 600-1,300°C in an inert gas environment or in a reducing environment. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
