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Coin-shaped lithium secondary battery and IoT device

專利號
US11996544B2
公開日期
2024-05-28
申請人
NGK INSULATORS, LTD.（JP Nagoya）
發(fā)明人
Yukinobu Yura; Kazuki Maeda; Shunsuke Mizukami
IPC分類
H01M4/131; H01M4/02; H01M4/04; H01M4/134; H01M4/525; H01M4/66; H01M10/0525; H01M50/409; H01M50/429; H01M50/44; H01M50/46
技術(shù)領(lǐng)域
electrode,plate,lto,lco,sintered,lithium,positive,sheet,battery,green
地域： Nagoya

摘要

Provided is a coin-shaped lithium secondary battery including a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode plate which is a titanium-containing sintered plate; a separator interposed between the positive electrode plate and the negative electrode plate; an electrolytic solution with which the positive electrode plate, the negative electrode, and the separator are impregnated; and an exterior body having a closed space, the closed space accommodating the positive electrode plate, the negative electrode plate, the separator, and the electrolytic solution, the lithium secondary battery having a thickness of 0.7 to 1.6 mm and a diameter of 10 to 20 mm.

說明書

A positive electrode plate, a negative electrode plate, and a battery were prepared and evaluated for the various properties as in Example 1 except that the size of each component was varied so that the battery had a coin-shaped outline with a diameter of 20 mm and a thickness of 1.0 mm.

Example 15

A positive electrode plate, a negative electrode plate, and a battery were prepared and evaluated for the various properties as in Example 1 except that 1) the size of each component was varied so that the battery had a coin-shaped outline with a diameter of 20 mm and a thickness of 1.6 mm, 2) the thickness of the LCO green sheet was increased so that the thickness of the positive electrode plate was 450 μm, and 3) the thickness of the LTO green sheet was increased so that the thickness of the negative electrode layer was 500 μm.

Example 16 (Comparison)

A positive electrode plate, a negative electrode plate, and a battery were prepared and evaluated for the various properties as in Example 1 except that 1) a commercially available LCO-coated electrode (manufactured by Hohsen Corp.) was used as a positive electrode plate instead of the LCO sintered plate, and 2) a commercially available LTO-coated electrode (manufactured by Hohsen Corp.) was used as a negative electrode plate instead of the LTO sintered plate.

Example 17 (Comparison)

權(quán)利要求

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