JP2014225445A - 二次電池およびその作製方法 - Google Patents
二次電池およびその作製方法 Download PDFInfo
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- JP2014225445A JP2014225445A JP2014086604A JP2014086604A JP2014225445A JP 2014225445 A JP2014225445 A JP 2014225445A JP 2014086604 A JP2014086604 A JP 2014086604A JP 2014086604 A JP2014086604 A JP 2014086604A JP 2014225445 A JP2014225445 A JP 2014225445A
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- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】基材に電極活物質層(負極活物質或いは正極活物質を含む)を形成し、電極活物質層にスパッタリング法を用いて金属膜を形成した後、基材と電極活物質を界面で分離して電極を形成する。スパッタリング法を用いた金属膜で覆うことによって金属膜と接するそれぞれの粒子が接着された電極活物質をリチウムイオン二次電池の一対の電極のうち、少なくとも一方の電極(負極或いは正極)として用いる。
【選択図】図1
Description
本発明の一態様にかかるリチウムイオン二次電池の電極の作製方法について図1を用い、以下に説明する。
本実施の形態では、基材として酸化シリコンを含む膜を表面に形成したプラスチックフィルムを用いるリチウムイオン二次電池の電極の作製方法の一例を以下に示す。
本実施の形態では、実施の形態1乃至3で示した製造方法により製造した蓄電池用電極を用いた蓄電池の構造について、図5乃至図7を参照して説明する。
図5(A)は、コイン型(単層偏平型)の蓄電池の外観図であり、図5(B)は、その断面図である。
次に、ラミネート型の蓄電池の一例について、図6を参照して説明する。
次に、円筒型の蓄電池の一例について、図7を参照して説明する。円筒型の蓄電池600は図7(A)に示すように、上面に正極キャップ(電池蓋)601を有し、側面及び底面に電池缶(外装缶)602を有している。これら正極キャップと電池缶(外装缶)602とは、ガスケット(絶縁パッキン)610によって絶縁されている。
本実施の形態においては、先の実施の形態で説明した蓄電池を有する電子機器の一例について図8、及び図9を用いて説明を行う。
10b:膜
11:金属膜
12:電極活物質
13:樹脂膜
14:集電体
100:基材
101:金属膜
102:電極活物質
104:集電体
200:基材
201:金属膜
202:電極活物質
205:グラフェン
300 蓄電池
301 正極缶
302 負極缶
303 ガスケット
304 正極
305 正極集電体
306 正極活物質層
307 負極
308 負極集電体
309 負極活物質層
310 セパレータ
400 蓄電池
402 正極
404 負極
500 蓄電池
501 正極集電体
502 正極活物質層
503 正極
504 負極集電体
505 負極活物質層
506 負極
507 セパレータ
508 電解液
509 外装体
600 蓄電池
601 正極キャップ
602 電池缶
603 正極端子
604 正極
605 セパレータ
606 負極
607 負極端子
608 絶縁板
609 絶縁板
611 PTC素子
612 安全弁機構
702 筐体
704 表示パネル
705 アイコン
706 アイコン
711 操作ボタン
712 操作ボタン
713 接続端子
721 バンド
722 留め金
800 携帯電話機
801 筐体
802 表示部
803 操作ボタン
804 蓄電池
805 スピーカ
806 マイク
901 掃除機
902 二次電池
903 表示部
1700 曲面
1701 平面
1702 曲線
1703 曲率半径
1704 曲率中心
1800 曲率中心
1801 フィルム
1802 曲率半径
1803 フィルム
1804 曲率半径
1805 電極・電解液などの電池材料
Claims (10)
- 複数の電極活物質の粒子と、前記複数の電極活物質の粒子のうち、隣接する2つの粒子間を接着する金属膜と、を含む第1の電極と、
第2の電極と、
前記第1の電極と前記第2の電極の間に少なくとも電解液を有する二次電池。 - 電解液を間に有する一対の電極のうち、少なくとも一方の電極は、複数の電極活物質の粒子と、
前記複数の電極活物質の粒子同士の間隙の少なくとも一部に充填された金属膜と、を有し、
前記間隙内に充填された部分における前記金属膜は、前記電極活物質の粒子同士を接着、または前記電極活物質の粒子同士の接着を強化する二次電池。 - 請求項1または請求項2において、さらに前記金属膜に接する集電体を有する二次電池。
- 請求項1乃至3のいずれか一において、前記複数の電極活物質において、一部の電極活物質の粒子同士はバインダーで接着されている二次電池。
- 請求項1乃至4のいずれか一において、前記複数の電極活物質において、一部の電極活物質の粒子同士はグラフェンと接する二次電池。
- 基材上に複数の電極活物質の粒子を含むスラリーを塗工し、乾燥させた後、
スパッタリング法により金属膜を成膜して前記電極活物質の粒子同士を接着、または前記電極活物質の粒子同士の接着を強化し、
前記基材と前記複数の電極活物質の粒子の界面から分離させ、前記金属膜により一部が固定された前記複数の電極活物質を含む電極を形成する二次電池の作製方法。 - 基材上に複数の電極活物質の粒子を含むスラリーを塗工し、乾燥させた後、
スパッタリング法により金属膜を成膜して前記電極活物質の粒子同士を接着、または前記電極活物質の粒子同士の固定接着を強化し、
前記基材と前記複数の電極活物質の粒子の界面から分離させ、
前記金属膜に集電体を電気的に接続させた電極を形成する二次電池の作製方法。 - 請求項7において、前記集電体はアルミニウム箔または銅箔である二次電池の作製方法。
- 請求項6乃至8のいずれか一において、前記基材は表面に酸化シリコン膜を有するプラスチックフィルムである二次電池の作製方法。
- 請求項6乃至9のいずれか一において、前記金属膜はチタンまたは銅である二次電池の作製方法。
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WO2016110771A1 (ja) * | 2015-01-09 | 2016-07-14 | 株式会社半導体エネルギー研究所 | 蓄電池用電極、及びその製造方法、蓄電池、並びに電子機器 |
JP2018529212A (ja) * | 2016-03-24 | 2018-10-04 | エルジー・ケム・リミテッド | 電池 |
JP2019080317A (ja) * | 2013-04-19 | 2019-05-23 | 株式会社半導体エネルギー研究所 | 携帯電話機 |
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- 2014-03-27 WO PCT/JP2014/059791 patent/WO2014171337A1/en active Application Filing
- 2014-04-04 US US14/245,037 patent/US9768467B2/en active Active
- 2014-04-09 TW TW103113008A patent/TWI624983B/zh not_active IP Right Cessation
- 2014-04-18 JP JP2014086604A patent/JP2014225445A/ja not_active Withdrawn
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2017
- 2017-09-07 US US15/697,585 patent/US11005123B2/en active Active
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JP2019080317A (ja) * | 2013-04-19 | 2019-05-23 | 株式会社半導体エネルギー研究所 | 携帯電話機 |
US11005123B2 (en) | 2013-04-19 | 2021-05-11 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
US11594752B2 (en) | 2013-04-19 | 2023-02-28 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
US11923499B2 (en) | 2013-04-19 | 2024-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Secondary battery and a method for fabricating the same |
WO2016110771A1 (ja) * | 2015-01-09 | 2016-07-14 | 株式会社半導体エネルギー研究所 | 蓄電池用電極、及びその製造方法、蓄電池、並びに電子機器 |
JPWO2016110771A1 (ja) * | 2015-01-09 | 2017-10-19 | 株式会社半導体エネルギー研究所 | 蓄電池用電極、及びその製造方法、蓄電池、並びに電子機器 |
US10367188B2 (en) | 2015-01-09 | 2019-07-30 | Semiconductor Energy Laboratory Co., Ltd. | Storage battery electrode, manufacturing method thereof, storage battery, and electronic device |
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US11545655B2 (en) | 2015-01-09 | 2023-01-03 | Semiconductor Energy Laboratory Co., Ltd. | Storage battery electrode, manufacturing method thereof, storage battery, and electronic device |
US11881578B2 (en) | 2015-01-09 | 2024-01-23 | Semiconductor Energy Laboratory Co., Ltd. | Storage battery electrode, manufacturing method thereof, storage battery, and electronic device |
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Also Published As
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KR20220148330A (ko) | 2022-11-04 |
US20230231177A1 (en) | 2023-07-20 |
WO2014171337A1 (en) | 2014-10-23 |
KR102581914B1 (ko) | 2023-09-21 |
TWI624983B (zh) | 2018-05-21 |
US11005123B2 (en) | 2021-05-11 |
KR20210109063A (ko) | 2021-09-03 |
US20210265653A1 (en) | 2021-08-26 |
US20170373345A1 (en) | 2017-12-28 |
US11923499B2 (en) | 2024-03-05 |
US20140315091A1 (en) | 2014-10-23 |
JP2020126860A (ja) | 2020-08-20 |
KR102460298B1 (ko) | 2022-10-27 |
KR20150143664A (ko) | 2015-12-23 |
JP2019080317A (ja) | 2019-05-23 |
US11594752B2 (en) | 2023-02-28 |
JP2022100368A (ja) | 2022-07-05 |
KR102297634B1 (ko) | 2021-09-02 |
US9768467B2 (en) | 2017-09-19 |
KR20230137493A (ko) | 2023-10-04 |
TW201505239A (zh) | 2015-02-01 |
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