发明名称 |
SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, ELECTRIC POWER STORAGE SYSTEM, ELECTRIC POWER TOOL, AND ELECTRONIC DEVICE |
摘要 |
A cathode includes a lithium transition metal complex compound including lithium, one, or two or more transition metals, magnesium, and oxygen as constituent elements. In a standardized X-ray absorption spectrum of the lithium transition metal complex compound measured by an X-ray absorption spectroscopic method, a first absorption edge having absorption edge energy E1 in X-ray absorption intensity of about 0.5 exits in a range where X-ray energy is from about 1303 eV to about 1313 eV both inclusive, in a discharged state in which a discharge voltage is about 3.0 V, and a second absorption edge having absorption edge energy E2 in X-ray absorption intensity of about 0.5 exits, in a charged state in which a charge voltage V is from about 4.3 V to about 4.5 V both inclusive. The absorption edge energies E1 and E2 and the charge voltage V satisfy a relation of E2−E1≧(V−4.25)×4.
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申请公布号 |
US2013052534(A1) |
申请公布日期 |
2013.02.28 |
申请号 |
US201213584436 |
申请日期 |
2012.08.13 |
申请人 |
FUJIKI SATOSHI;FUKUDOME HIROTAKA;MOTOHASHI KAZUNARI;HOSOYA YOSUKE;KUDO YOSHIHIRO;SONY CORPORATION |
发明人 |
FUJIKI SATOSHI;FUKUDOME HIROTAKA;MOTOHASHI KAZUNARI;HOSOYA YOSUKE;KUDO YOSHIHIRO |
分类号 |
H01M4/485;H01M4/505;H01M4/525;H01M4/54 |
主分类号 |
H01M4/485 |
代理机构 |
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代理人 |
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地址 |
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