JP2019516218A - リチウム二次電池 - Google Patents
リチウム二次電池 Download PDFInfo
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Abstract
Description
[製造例1]
厚さが20μmのリチウム金属薄膜を負極として使用した。電解液は、1,3−ジオキソランとエチレングリコールジメチルエーテル(DOL:DME=1:1(体積比))からなる有機溶媒に1M濃度のリチウムビスフルオロスルホニルイミド(LiFSI)を溶解させて製造した。
上記負極と電解液でLi/Li対称セル(symmetric cell)を製造した。
上記製造例1で電解液をエチレンカーボネート、ジエチルカーボネート及びジメチルカーボネート(EC:DEC:DMC=1:2:1(体積比)からなる有機溶媒に1M濃度のリチウムヘキサフルオロホスフェート(LiPF6)を溶解させ、2重量%のVCを添加して製造されたもので使用したことを除いては、上記製造例1と同様に実施してLi/Li対称セルを製造した。
[実施例1]
正極活物質としてLiCoO2、導電材としてスーパーP及びバインダーとしてポリフッ化ビニリデン(PVDF)がそれぞれ95重量%、2.5重量%及び2.5重量%からなる正極活物質スラリーを製造した後、上記正極活物質スラリーをアルミニウム集電体上に塗布した後、乾燥することで正極を製造した。
厚さが20μmのリチウム金属薄膜を負極として使用した。
上記実施例1と同一の正極と負極の間にイオン伝導性ガラス−セラミックス分離膜を介在させた電極組立体をコインセルに挿入した後、エチレングリコールジメチルエーテル(DOL:DME=1:1(体積比))からなる有機溶媒に1M濃度のリチウムビスフルオロスルホニルイミド(LiFSI)を溶解させた電解液100μlを注入した。以後、完全に密封することでリチウム二次電池を製造した。
上記実施例1と同一の正極と負極の間にイオン伝導性ガラス−セラミックス分離膜を介在させた電極組立体をコインセルに挿入した後、ジメチルカーボネート(EC:DEC:DMC=1:2:1(体積比)からなる有機溶媒に1M濃度のリチウムヘキサフルオロフォスフェート(LiPF6)を溶解させ、2重量%のVCを添加した電解液100μlを注入した。以後、完全に密封することでリチウム二次電池を製造した。
上記製造例1及び2で製造された対称セルをDOD(depth of discharge)83%、1C充放電条件で充放電させた。前記充放電後、サイクル効率(%)を測定し、その結果を下記表1に示した。
上記実施例及び比較例で製造されたリチウム二次電池(電池容量4.6mAh)を55℃で0.7Cの定電流4.6Vになるまで充電し、以後4.6Vの定電圧で充電して、充電電流が0.275mAになると充電を終了した。以後、10分間放置した後、0.5Cの定電流で3.0Vになるまで放電した。上記充放電を50サイクル行った後、電池容量を測定して図2に示した。
10:負極
20:正極
30:電解質
31:ゲル高分子電解質
32:液体電解質
40:分離膜
Claims (8)
- 正極、負極、及び前記正極と負極の間に介在される分離膜及び電解質を含み、
上記負極と分離膜の間にゲル高分子電解質を含み、
上記正極と分離膜の間に液体電解質を含むことを特徴とするリチウム二次電池。 - 上記負極は、リチウム金属またはリチウム合金であることを特徴とする請求項1に記載のリチウム二次電池。
- 上記ゲル高分子電解質は、エーテル系溶媒及びリチウム塩を含む電解液が高分子マトリックスに含浸されていることを特徴とする請求項1に記載のリチウム二次電池。
- 上記エーテル系溶媒は、ジメチルエーテル、ジエチルエーテル、ジブチルエーテル、エチレングリコールジメチルエーテル、ジエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、トリエチレングリコールジメチルエーテル、トリエチレングリコールジエチルエーテル、1,3−ジオキソラン、4−メチルジオキソラン、1,4−ジオキサン、3,5−ジメチルイソオキサゾール、2,5−ジメチルフラン、フラン、2−メチルフラン、テトラヒドロフラン及び2−メチルテトラヒドロフランからなる群から選択される1種以上であることを特徴とする請求項3に記載のリチウム二次電池。
- 上記高分子マトリックスは、ポリエチレンオキシド、ポリプロピレンオキシド、ポリアクリロニトリル、ポリ塩化ビニル、ポリフッ化ビニリデン、ポリメチルメタクリレート、ポリ(メタ)アクリレート、ポリシロキサン及びポリホスファゲンからなる群から選択される1種以上であることを特徴とする請求項3に記載のリチウム二次電池。
- 上記液体電解質は、カーボネート系溶媒及びリチウム塩を含むことを特徴とする請求項1に記載のリチウム二次電池。
- 上記カーボネート系溶媒は、エチレンカーボネート、プロピレンカーボネート、1,2−ブチレンカーボネート、2,3−ブチレンカーボネート、2,3−ペンチレンカーボネート、ジメチルカーボネート、ジエチルカーボネート、エチルメチルカーボネート、ジプロピルカーボネート、メチルプロピルカーボネート及びエチルプロピルカーボネートからなる群から選択される1種以上であることを特徴とする請求項6に記載のリチウム二次電池。
- 正極、負極、及びこれらの間に介在される分離膜、ゲル高分子電解質及び液体電解質を含み、
前記ゲル高分子電解質がエーテル系溶媒を含み、
前記液体電解質がカーボネート系溶媒を含むことを特徴とするリチウム二次電池。
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Application Number | Priority Date | Filing Date | Title |
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KR20160127000 | 2016-09-30 | ||
KR10-2016-0127000 | 2016-09-30 | ||
KR10-2017-0124872 | 2017-09-27 | ||
KR1020170124872A KR101990617B1 (ko) | 2016-09-30 | 2017-09-27 | 리튬 이차전지 |
PCT/KR2017/010783 WO2018062882A1 (ko) | 2016-09-30 | 2017-09-28 | 리튬 이차전지 |
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JP2019516218A true JP2019516218A (ja) | 2019-06-13 |
JP6732299B2 JP6732299B2 (ja) | 2020-07-29 |
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JP2018553894A Active JP6732299B2 (ja) | 2016-09-30 | 2017-09-28 | リチウム二次電池 |
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US (1) | US11322777B2 (ja) |
EP (1) | EP3442068B1 (ja) |
JP (1) | JP6732299B2 (ja) |
KR (1) | KR101990617B1 (ja) |
CN (1) | CN109155427B (ja) |
Cited By (2)
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JP2021077453A (ja) * | 2019-11-05 | 2021-05-20 | スズキ株式会社 | 金属空気電池 |
JP2022525234A (ja) * | 2019-10-28 | 2022-05-11 | 浙江鋒▲り▼新能源科技有限公司 | 固体・液体電池 |
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KR102148504B1 (ko) * | 2017-03-03 | 2020-08-26 | 주식회사 엘지화학 | 리튬 이차전지 |
CN112018427A (zh) * | 2019-05-28 | 2020-12-01 | 比亚迪股份有限公司 | 一种凝胶聚合物电池及其制备方法 |
US11271195B2 (en) * | 2019-07-08 | 2022-03-08 | Ford Global Technologies, Llc | Hybrid electrolyte design for titanium niobium oxide based lithium battery |
CN110911740B (zh) * | 2019-11-29 | 2022-08-09 | 苏州清陶新能源科技有限公司 | 一种凝胶电解质电池及其制备方法 |
KR20220038494A (ko) | 2019-12-03 | 2022-03-28 | 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 | 이차 전지, 전해액 및 이차 전지를 포함하는 장치 |
KR20210075773A (ko) * | 2019-12-13 | 2021-06-23 | 현대자동차주식회사 | 충방전 기능을 갖는 차체 부재 |
CN111244530B (zh) * | 2020-01-15 | 2021-09-07 | 浙江大学 | 一种用于合金负极材料锂电池的电解液及其应用 |
CN113785424A (zh) * | 2020-02-05 | 2021-12-10 | 优百特有限公司 | 薄型锂电池及其制造方法 |
CN111430780B (zh) * | 2020-04-28 | 2023-03-28 | 孚能科技(赣州)股份有限公司 | 电解液原料组合物,电解液及锂离子二次电池及其制备方法 |
CN112713301B (zh) * | 2020-12-31 | 2022-06-24 | 广东微电新能源有限公司 | 储能装置 |
WO2023115535A1 (zh) * | 2021-12-24 | 2023-06-29 | 宁德时代新能源科技股份有限公司 | 电极组件及其制备方法、二次电池、电池模块、电池包和用电装置 |
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JP7401071B2 (ja) | 2019-11-05 | 2023-12-19 | スズキ株式会社 | 金属空気電池 |
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EP3442068B1 (en) | 2023-09-13 |
JP6732299B2 (ja) | 2020-07-29 |
KR101990617B1 (ko) | 2019-06-18 |
CN109155427A (zh) | 2019-01-04 |
KR20180036573A (ko) | 2018-04-09 |
US20190140318A1 (en) | 2019-05-09 |
US11322777B2 (en) | 2022-05-03 |
EP3442068A1 (en) | 2019-02-13 |
EP3442068A4 (en) | 2019-08-07 |
CN109155427B (zh) | 2022-04-05 |
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