发明名称 |
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY |
摘要 |
The purpose of the invention is to provide a non-aqueous electrolyte secondary battery having a large battery capacity and excellent charge and discharge cycle characteristics. The non-aqueous electrolyte secondary battery comprises a negative electrode containing a particulate negative electrode active material (33), a positive electrode, and a non-aqueous electrolyte. The particulate negative electrode active material (33) includes a plurality of two-phase regions (34) in a particle, said two-phase regions (34) each including a first phase (A) containing silicon and a second phase (B) containing silicon oxide formed on the periphery of the first phase. In the particulate negative electrode active material (33), the ratio of the intensity of a Raman spectrum obtained by a Raman spectroscopy at a wavelength of 480 cm-1 with respect to the intensity thereof at a wavelength of 510 cm-1 is 0.1 or less, and the ratio of the intensity of an x-ray diffraction pattern obtained by an x-ray diffraction measurement at 2&thetas; = 21.6 with respect to the intensity thereof at 2&thetas; = 28.4 is 0.1 or less. |
申请公布号 |
WO2014156117(A1) |
申请公布日期 |
2014.10.02 |
申请号 |
WO2014JP01694 |
申请日期 |
2014.03.25 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
TUDUKI, KOUHEI;FUKUI, ATSUSHI;SUNANO, TAIZOU |
分类号 |
H01M4/38;H01M4/36;H01M4/48 |
主分类号 |
H01M4/38 |
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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