发明名称 |
LITHIUM ION SECONDARY BATTERY AND METHOD OF PRODUCING SAME |
摘要 |
A lithium ion secondary battery is provided that is resistant to a decline in capacity even when subjected to repeated charge/discharge under conditions that facilitate the precipitation of lithium metal on a negative electrode surface. The herein disclosed lithium ion secondary battery has: an electrode assembly having a positive electrode and a negative electrode; and a nonaqueous electrolyte solution containing a carbonate solvent and LiPF6. A surface of the negative electrode is coated with granules each having an approximately circular base. The granules contain element hydrogen, element carbon, element oxygen, element fluorine, and element phosphorus. The average diameter of the bases of the granules is 54 nm to 158 nm. |
申请公布号 |
US2017054145(A1) |
申请公布日期 |
2017.02.23 |
申请号 |
US201615236662 |
申请日期 |
2016.08.15 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
ABE Machiko;IWASE Kosuke;YOSHIOKA Masahiro |
分类号 |
H01M4/36;H01M10/44;H01M10/0568;H01M10/0525;H01M10/0569 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. A lithium ion secondary battery comprising:
an electrode assembly having a positive electrode and a negative electrode; and a nonaqueous electrolyte solution containing a carbonate solvent and LiPF6, wherein a surface of the negative electrode is coated with granules each having an approximately circular base, the granules include element hydrogen, element carbon, element oxygen, element fluorine, and element phosphorus, and an average diameter of the bases of the granules is 54 nm to 158 nm. |
地址 |
Toyota-shi JP |