发明名称 |
METHOD FOR EVALUATING POSITIVE ELECTRODE ACTIVE MATERIAL |
摘要 |
Provided is a method for evaluating a positive electrode active material. The method evaluates the performance of a positive electrode active material comprising a lithium transition metal oxide that contains a manganese-containing transition metal oxide. In this method, the lithium penetration rate into a transition metal site in the lithium transition metal oxide is evaluated based on the intensity ratio P between a first-neighbor Mn—O peak intensity A and a second-neighbor Mn-M peak intensity B in a radial distribution function obtained from EXAFS at the K absorption edge of manganese (Mn). Moreover, the ratio of excess lithium present in the positive electrode active material may also be evaluated based on the excess amount of added lithium Q contained in excess of the stoichiometric ratio of the lithium transition metal oxide and the intensity ratio P. |
申请公布号 |
KR20120061928(A) |
申请公布日期 |
2012.06.13 |
申请号 |
KR20127007776 |
申请日期 |
2009.08.27 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
GOTO SATOSHI |
分类号 |
H01M4/505;G01N23/08;H01M4/131;H01M10/052 |
主分类号 |
H01M4/505 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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