| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synthesis method of Na<SB>2-x</SB>MPO<SB>4</SB>F (wherein M represents Fe, Mn or a mixture thereof) and Li<SB>2-x</SB>MPO<SB>4</SB>F having positive electrode characteristics with a higher discharge voltage and superior energy density compared to a conventional olivine type positive electrode, and to provide a positive electrode containing the compound for a non-aqueous electrolyte secondary battery, and a non-aqueous electrolyte secondary battery. <P>SOLUTION: The present invention provides a new synthesis method of Na<SB>2-x</SB>MnPO<SB>4</SB>F and of Li<SB>2-x</SB>MnPO<SB>4</SB>F by ion exchange from Na<SB>2-x</SB>MnPO<SB>4</SB>F, an electrode active substance for a non-aqueous electrolyte secondary battery comprising the obtained compound, and an electrode and a battery containing the substance. <P>COPYRIGHT: (C)2011,JPO&INPIT |
