发明名称 |
POSITIVE ELECTRODE ACTIVE MATERIAL, SODIUM SECONDARY BATTERY, AND PRODUCTION METHOD OF OLIVINE-TYPE PHOSPHATE |
摘要 |
Disclosed are a positive electrode active material and a method for producing an olivine-type phosphate. The positive electrode active material comprises an olivine-type phosphate represented by the following formula (I), wherein the maximum peak in an X-ray diffraction pattern obtained using a CuKαray is the peak of the (031) plane of the olivine-type phosphate and the half-value width of the peak is 1.5° or less: AaMbPO4 (I), wherein A represents one or more elements selected from among alkali metals; M represents one or more elements selected from among transition metals; a is from 0.5 to 1.5; and b is from 0.5 to 1.5. The method for producing an olivine-type phosphate comprises preparing a raw material comprising element A, element M, and phosphorus (P) so that a A:M:P molar ratio may be a:b:1, preliminary calcining the raw material, and mainly calcining the preliminary calcined raw material.
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申请公布号 |
US2010323231(A1) |
申请公布日期 |
2010.12.23 |
申请号 |
US20090864715 |
申请日期 |
2009.01.23 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
SAKAI MAIKO;YAMAMOTO TAKETSUGU;MAKIDERA MASAMI;KUZE SATORU;HATTORI TAKESHI |
分类号 |
H01M4/58;H01M2/16;H01M4/88 |
主分类号 |
H01M4/58 |
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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