JP2012074203A - リチウムイオン二次電池、車両、電子機器およびリチウムイオン二次電池の製造方法 - Google Patents
リチウムイオン二次電池、車両、電子機器およびリチウムイオン二次電池の製造方法 Download PDFInfo
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Abstract
【解決手段】負極活物質層12は負極活物質材料としてのLi4Ti5O12を含み、正極活物質層14は正極活物質材料としてのLiCoO2を含む。また、固体電解質層13は電解質材料としてのポリエチレンオキサイドとポリスチレンとを含む。負極集電体11の表面から見て、負極活物質層12を構成するライン状パターン121の表面の勾配が90度よりも小さい。このような構成により、活物質の使用量に対する容量が大きく、かつ充放電特性も良好な電池を構成することができる。
【選択図】図1
Description
11 (負極集電体としての)銅箔
12 負極活物質層
13 電解質層
14 正極活物質層
15 (正極集電体としての)アルミニウム箔
31 ノズル
32 負極活物質塗布液
50 電気自動車(車両)
70 ICカード(電子機器)
71,72 カード筐体(筐体)
73 回路モジュール(電子回路部)
121 (負極活物質の)ライン状パターン
Claims (11)
- 負極集電体層、活物質材料としてのLi4Ti5O12を含む負極活物質層、ポリエチレンオキサイドおよびポリスチレンを含む固体電解質層、活物質材料としてのLiCoO2を含む正極活物質層、および正極集電体層をこの順番に積層した構造を有し、
前記負極活物質層は、前記負極集電体層表面に互いに離隔し平行なライン状パターンを複数配してなるストライプ構造を有し、
前記ライン状パターンと前記負極集電体層との接触点において前記負極活物質層に引いた接線と前記負極集電体層表面とがなす角のうち前記負極活物質層を含む側の角が90度よりも小さい
ことを特徴とするリチウムイオン二次電池。 - 前記ライン状パターンと前記負極集電体層との接触点において、前記負極集電体層と前記固体電解質層とが接触している請求項1に記載のリチウムイオン二次電池。
- 前記ライン状パターンの延設方向に直交する断面における前記ライン状パターンの断面形状は、前記負極集電体層と接触する部分の幅が20μmないし300μm、高さが10μmないし300μmであり、前記幅に対する前記高さの比が0.5以上である請求項2に記載のリチウムイオン二次電池。
- 前記ライン状パターンでは、前記負極集電体層と接触する部分を除く表面が滑らかな曲面である請求項1ないし3のいずれかに記載のリチウムイオン二次電池。
- 請求項1ないし4のいずれかに記載のリチウムイオン二次電池を搭載することを特徴とする車両。
- 請求項1ないし4のいずれかに記載のリチウムイオン二次電池と、
前記リチウムイオン二次電池を電源として動作する電子回路部と
を備えることを特徴とする電子機器。 - 前記リチウムイオン二次電池と前記電子回路部とを収容するカード型の筐体を備える請求項6に記載の電子機器。
- 負極集電体となる基材の表面に、負極活物質材料としてのLi4Ti5O12を含み互いに離隔した平行な複数のライン状パターンからなるストライプ構造の負極活物質層を形成する第1工程と、
ポリエチレンオキサイドおよびポリスチレンを含む固体電解質により、前記負極活物質層により覆われていない前記基材の露出表面と前記負極活物質層の表面とを共に覆う固体電解質層を形成する第2工程と、
前記固体電解質層の表面に、正極活物質材料としてのLiCoO2を含む正極活物質層、および正極集電体を積層する第3工程と
を備え、
前記第1工程では、前記ライン状パターンと前記負極集電体層との接触点において前記負極活物質層に引いた接線と前記負極集電体層表面とがなす角のうち前記負極活物質層を含む側の角を90度よりも小さくする
ことを特徴とするリチウムイオン二次電池の製造方法。 - 前記第1工程では、前記負極活物質材料を含む塗布液をノズルから吐出させ前記基材表面に塗布して前記負極活物質層を形成する請求項8に記載のリチウムイオン二次電池の製造方法。
- 前記第1工程では、前記基材表面に対して前記ノズルを所定方向に相対移動させてライン状に前記塗布液を前記基材表面に塗布する請求項9に記載のリチウムイオン二次電池の製造方法。
- 前記第2工程では、前記第1工程で形成された前記基材と前記負極活物質層とを積層してなる積層体の表面に前記固体電解質の材料を含む塗布液を塗布して前記固体電解質層を形成する請求項8ないし10のいずれかに記載のリチウムイオン二次電池の製造方法。
Priority Applications (5)
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JP2010217321A JP5462758B2 (ja) | 2010-09-28 | 2010-09-28 | リチウムイオン二次電池、車両、電子機器およびリチウムイオン二次電池の製造方法 |
TW100115801A TWI443898B (zh) | 2010-09-28 | 2011-05-05 | 鋰離子二次電池、車輛、電子機器及鋰離子二次電池之製造方法 |
KR1020110044537A KR101320737B1 (ko) | 2010-09-28 | 2011-05-12 | 리튬이온 이차전지, 차량, 전자기기 및 리튬이온 이차전지의 제조 방법 |
CN2011101356645A CN102420338A (zh) | 2010-09-28 | 2011-05-20 | 锂离子二次电池、车辆、电子设备及该电池的制造方法 |
US13/220,244 US8999587B2 (en) | 2010-09-28 | 2011-08-29 | Lithium-ion secondary battery, vehicle, electronic device and manufacturing method of lithium-ion secondary battery |
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Cited By (2)
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KR101538842B1 (ko) * | 2012-08-20 | 2015-07-22 | 가부시키가이샤 스크린 홀딩스 | 리튬 이온 이차 전지용 전극의 제조 방법 및 제조 장치와 리튬 이온 이차 전지용 전극 |
WO2024128823A1 (ko) * | 2022-12-15 | 2024-06-20 | 주식회사 엘지에너지솔루션 | 패턴을 포함하는 리튬 이차 전지용 음극 및 음극을 포함하는 리튬 이차 전지 |
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KR101072289B1 (ko) * | 2010-07-02 | 2011-10-11 | 주식회사 샤인 | 섬유상의 구조체들을 포함하는 전극 조립체 |
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USD808902S1 (en) * | 2016-06-30 | 2018-01-30 | Intel Corporation | Charging pad |
KR102053239B1 (ko) | 2016-09-09 | 2019-12-06 | 주식회사 엘지화학 | 고용량의 전극을 포함하는 이차전지의 제조 방법 |
TWI622218B (zh) * | 2016-09-22 | 2018-04-21 | 財團法人工業技術研究院 | 電極及包含其之電池 |
JP7031671B2 (ja) * | 2017-07-24 | 2022-03-08 | 株式会社村田製作所 | 二次電池の製造方法 |
KR102319539B1 (ko) * | 2018-11-02 | 2021-10-28 | 주식회사 엘지에너지솔루션 | 전고체 전지의 제조 방법 |
JP7409826B2 (ja) * | 2019-10-30 | 2024-01-09 | 太陽誘電株式会社 | 全固体電池 |
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KR101538842B1 (ko) * | 2012-08-20 | 2015-07-22 | 가부시키가이샤 스크린 홀딩스 | 리튬 이온 이차 전지용 전극의 제조 방법 및 제조 장치와 리튬 이온 이차 전지용 전극 |
WO2024128823A1 (ko) * | 2022-12-15 | 2024-06-20 | 주식회사 엘지에너지솔루션 | 패턴을 포함하는 리튬 이차 전지용 음극 및 음극을 포함하는 리튬 이차 전지 |
Also Published As
Publication number | Publication date |
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CN102420338A (zh) | 2012-04-18 |
US20120077093A1 (en) | 2012-03-29 |
TW201214850A (en) | 2012-04-01 |
KR101320737B1 (ko) | 2013-10-21 |
JP5462758B2 (ja) | 2014-04-02 |
KR20120032396A (ko) | 2012-04-05 |
TWI443898B (zh) | 2014-07-01 |
US8999587B2 (en) | 2015-04-07 |
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