JP5329310B2 - イオン液体を用いたリチウム二次電池 - Google Patents
イオン液体を用いたリチウム二次電池 Download PDFInfo
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- JP5329310B2 JP5329310B2 JP2009139074A JP2009139074A JP5329310B2 JP 5329310 B2 JP5329310 B2 JP 5329310B2 JP 2009139074 A JP2009139074 A JP 2009139074A JP 2009139074 A JP2009139074 A JP 2009139074A JP 5329310 B2 JP5329310 B2 JP 5329310B2
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- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
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- H01M2300/00—Electrolytes
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Description
空隙率(%)=100−(セパレータの見掛け密度/材料固形分の真密度)×100
〈正極の作製〉
正極活物質であるLiMn1/3Ni1/3Co1/3O2を100g、導電剤としてカーボンブラック(Timcal社製、Super−P)を7.8g、バインダーとしてポリフッ化ビニリデン(PVDF)3.3g、分散媒としてN−メチル−2−ピロリドン(NMP)を87.3g、それぞれを遊星型ミキサーで混合し、固形分56%の正極塗工液を調製した。この塗工液を塗工機で厚み20μmのアルミニウム箔上にコーティングを行い、130℃で乾燥後ロールプレス処理を行い、正極活物質4mg/cm2の正極を得た。
負極活物質であるグラファイト(大阪ガスケミカル(株)製、OMAC−1H)を100g、導電剤としてカーボンブラック(Timcal社製、Super−P)を0.55g、バインダーとしてPVDF8.7g、分散媒としてNMPを79.1g、それぞれ遊星型ミキサーで混合し、固形分58%の負極塗工液を調製した。この塗工液を厚み10μmの電解銅箔上にコーティングを行い、130℃で乾燥後ロールプレス処理を行い、負極活物質2mg/cm2の負極を得た。
上記により得られた正極及び負極間に、無機繊維を80質量%以上含有し、フィブリル化有機繊維を含む有機成分を20質量%未満含有してなる湿式抄造のセパレータ(日本板硝子(株)製、040A02、厚さ42μm)を挟んだ構造の積層体を作成し、端子を取り出すためのタブリードを溶接したのち、折り返したアルミラミネート包材に入れ、正極面積18cm2、負極面積19.84cm2のリチウム二次電池を作製した。電解液としてエチルメチルイミダゾリウム(EMIm)/FSI溶媒に1.2mol/kgのLiTFSIを溶解した溶液を注入した後、開放部のアルミラミネートをヒートシーラーで封止し、試験用のセルを作製した。
充放電試験装置を用いて、充電を0.2C時間率、放電を0.2Cから5C時間率の条件で行い、0.2C放電容量に対する5C放電容量の容量保持率を確認した。結果を表1に示す。
正極活物質、セパレータ等として電池材料を表1,2に示したものをそれぞれ用いた以外は、上記参考例1と同様にして試験用のセルを作製し、同様にして評価した。結果を表1,2に併記する。また、各実施例,参考例及び比較例で用いたセパレータの製品名等を表3に示す。なお、表1〜3中にセパレータ素材として示された「無機フィラー」はシリカ微粉末である。
Claims (2)
- 正極、負極、これら正極と負極との間に設けたセパレータ、及びリチウム塩を含む非水電解液とからなるリチウム二次電池であって、
前記非水電解液がビス(フルオロスルホニル)イミドアニオンをアニオン成分として含むイオン液体を溶媒とするものであり、
かつ前記セパレータは、平均繊維径が1μm以下のガラス繊維を80質量%以上と、フィブリル化有機繊維を含む有機成分を20質量%未満含有し、前記ガラス繊維同士が前記フィブリル化有機繊維の絡み付きによって結合され、空隙率が85%以上であることを特徴とするリチウム二次電池。 - 前記セパレータは、ガーレー試験法によって得られる透気度が200秒/100cc以下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。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009139074A JP5329310B2 (ja) | 2009-06-10 | 2009-06-10 | イオン液体を用いたリチウム二次電池 |
US12/796,230 US9005820B2 (en) | 2009-06-10 | 2010-06-08 | Lithium secondary battery using ionic liquid |
CN201010199316.XA CN101924242B (zh) | 2009-06-10 | 2010-06-09 | 使用离子液体的锂二次电池 |
KR1020100054651A KR101563754B1 (ko) | 2009-06-10 | 2010-06-10 | 이온 액체를 사용한 리튬 이차전지 |
EP10165559.5A EP2262037B1 (en) | 2009-06-10 | 2010-06-10 | Lithium secondary battery using ionic liquid |
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JP2009139074A JP5329310B2 (ja) | 2009-06-10 | 2009-06-10 | イオン液体を用いたリチウム二次電池 |
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JP2010287380A JP2010287380A (ja) | 2010-12-24 |
JP5329310B2 true JP5329310B2 (ja) | 2013-10-30 |
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US (1) | US9005820B2 (ja) |
EP (1) | EP2262037B1 (ja) |
JP (1) | JP5329310B2 (ja) |
KR (1) | KR101563754B1 (ja) |
CN (1) | CN101924242B (ja) |
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JP2007311333A (ja) | 2006-04-19 | 2007-11-29 | Nippon Sheet Glass Co Ltd | 鉛蓄電池用セパレータ、鉛蓄電池用ペースト紙、鉛蓄電池用極板及び鉛蓄電池 |
US20080014506A1 (en) * | 2006-04-19 | 2008-01-17 | Nippon Sheet Glass Company, Limited | Separator for lead-acid battery, pasting paper for lead-acid battery, plate for lead-acid battery and lead-acid battery |
KR101618371B1 (ko) | 2007-04-20 | 2016-05-04 | 미쓰비시 가가꾸 가부시키가이샤 | 비수계 전해액 및 그것을 사용한 비수계 전해액 이차 전지 |
JP5160159B2 (ja) * | 2007-07-18 | 2013-03-13 | 第一工業製薬株式会社 | リチウム二次電池 |
JP2009076486A (ja) * | 2007-09-18 | 2009-04-09 | Tomoegawa Paper Co Ltd | 電気化学素子用セパレータ |
JP4445537B2 (ja) | 2007-09-26 | 2010-04-07 | 株式会社東芝 | 二次電池、電池パック及び車 |
JP2009123385A (ja) * | 2007-11-12 | 2009-06-04 | Fuji Heavy Ind Ltd | 蓄電デバイス |
JP5235715B2 (ja) | 2009-02-25 | 2013-07-10 | 富士重工業株式会社 | 蓄電デバイスおよびその製造方法 |
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US9005820B2 (en) | 2015-04-14 |
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CN101924242A (zh) | 2010-12-22 |
CN101924242B (zh) | 2014-06-25 |
EP2262037A1 (en) | 2010-12-15 |
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