Lithium secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakahiro Fukuoka, Akira Kano
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Abstract
A lithium secondary battery includes a wound type electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, a core member inserted in a hollow of the electrode group, and a nonaqueous electrolyte having a lithium ion conductivity, wherein in the negative electrode, a lithium metal deposits during charging and the lithium metal dissolves during discharging, and the electrode group has a space that allows the separator to be apart from and oppose at least one of the positive electrode and the negative electrode.
Claims18
A lithium secondary battery comprising:
- a wound type electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode,
- a core member inserted in a hollow of the electrode group, and
- a nonaqueous electrolyte having a lithium ion conductivity, wherein
- in the negative electrode, a lithium metal deposits during charging and the lithium metal dissolves during discharging, and
- the electrode group has a space that allows the separator to be apart from and oppose at least one of the positive electrode and the negative electrode.
Dependencies are inferred from the claim text.