| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a reformed fine powder-like positive electrode material which is formed into an electrode of a lithium ion battery suitable for the lithium ion battery, which can be formed in particles miniaturized to have an evaluatable average particle diameter 1 μm or less, can reduce content of impurities below a detection limit, and includes high electron conductivity by further improving electron mobility. <P>SOLUTION: Positive electrode material raw material containing impurities, a polarity solvent, a supercritical fluid are heated and pressurized in a pressure-proof vessel so that the supercritical fluid is in a supercritical state or a subcritical state. Then, a pressure in the pressure-proof vessel is reduced and the supercritical fluid is gasified. The positive electrode material formed into fine powder is separated. The fine powder-like positive electrode material, conductive polymer, and the supercritical fluid are heated and pressurized in the pressure-proof vessel so that the supercritical fluid is in the supercritical state or the subcritical state. Then, the pressure in the pressure-proof vessel is reduced and the supercritical fluid is gasified. <P>COPYRIGHT: (C)2011,JPO&INPIT |
