JP2009110931A - 水性電解質を用いたリチウム電池 - Google Patents
水性電解質を用いたリチウム電池 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/26—Selection of materials as electrolytes
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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- H01M2300/0014—Alkaline electrolytes
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- H—ELECTRICITY
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- H01M2300/0085—Immobilising or gelification of electrolyte
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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
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Abstract
【解決手段】正極と、負極と、リチウム塩の水溶液からなる電解質とを含むセルを備えたリチウム電池であって、該電解質が、少なくとも14のpHを有し、該正極が、3.4Vを超えるリチウム挿入電位を有し、且つ該負極が、2.2V未満のリチウム挿入電位を有する水性リチウム二次電池であって、正極活物質にはオリビン構造を有するリチウム化合物、負極にはチタン酸リチウム又は酸化チタン又は両者の混合物からなる水性リチウム二次電池。
【選択図】図1
Description
・これらのpHの値に関する水素の過剰な放出
・高電位負極の必然的な使用、その結果としてセル出力時における低い発生電圧
という欠点に直面する。
・より多くの水素を放出する電池に特有な爆発リスクを抑える、作動中の水素の低い放出
・高いリチウム挿入電位を有する正極と、低いリチウム挿入電位を有する負極とを併用した結果として、各セルの出力時に得られるより高い電圧(少なくとも1.2V)
という利点を有する電池を得た。
LiFePO4を含む正極と、Li4Ti5O12を含む負極とを備えて、セル出力時に1.9Vの電圧を発生させるか、又は、
LiFePO4を含む正極と、TiO2を含む負極とを備えて、セル出力時に1.85Vの電圧を発生させることを含み得る。
正極及び負極が上記で与えられる定義に従う、正極と、セパレータと、負極とを含むスタックを作製する工程と、
上記で定められるように、上記セパレータを液体電解質で含浸させる工程と
を含む方法によって従来のように作製することができる。
LiFePO4を含む正極と、
Li4Ti5O12を含む負極と、
LiOHの4M水溶液からなる液体電解質と
を含むリチウム電池の作製を例示する。
a)電極を作製すること、
b)液体電解質を調製すること、
c)正極/電解質/負極スタックを作るようにスタックを作製すること
を含む。
電極を作製する試薬は、
正極についてはLiFePO4粉末、及び負極についてはLi4Ti5O12粉末、
Super Pカーボンブラック粉末(Timcal製)、
繊維(Toho Tenax GmbH製)、
CMC(カルボキシメチルセルロース、Aldrich製)の2%溶液、
NBR(ニトリルブタジエンゴム、PolymerLatex GmbH製)の41%溶液、
であり、当該試薬は、それぞれ92質量%、2質量%、2質量%、2質量%及び2質量%で存在する。
粉末及び繊維を秤量した後、これらを合わせてスパチュラで混合すること、
2%CMC溶液を秤量する共に添加し、スパチュラで混合した後、分散機を用いておよそ20〜30分間攪拌させること、
41%NBR溶液を秤量すると共に添加した後、分散機を用いて1〜2分間攪拌させること、
得られた混合物で細孔ニッケルフィルムをコーティングすること
であり、これは正極及び負極について同じである。
調製される溶液は、4Mリチウム溶液である。
167.84gのLiOHを、メスフラスコ内で蒸留水1L中に溶解する。この溶解は、磁気攪拌によって促される。
溶液のpHは14を超える。
正極、セパレータ及び負極を積層させることによって、充電式電池を作製する。セパレータはポリプロピレン繊維に基づくViledon(登録商標)(Freudenberg製)である。
その後、得られた組立体を、予め調製した電解質で真空含浸させる。
図2は、定電流(1mA)で充電式電池を充電する初めの2回のサイクルに関する曲線を示し、停止電圧は2.4Vである。
Claims (10)
- 正極と、負極と、リチウム塩の水溶液からなる電解質とを含むセルを備えたリチウム電池であって、該電解質が、少なくとも14のpHを有し、該正極が、3.4Vを超えるリチウム挿入電位を有し、且つ該負極が、2.2V未満のリチウム挿入電位を有することを特徴とするリチウム電池。
- 前記正極が、オリビン構造及び一般式LiMPO4(式中、Mは、Fe、Mn、Ni、Co及びそれらの混合物から選択される)を有するリチウム酸化物から選択される材料を含む請求項1に記載のリチウム電池。
- 前記正極がLiFePO4を含む請求項2に記載のリチウム電池。
- 前記負極が、チタン酸リチウム、酸化チタン(TiO2)及びそれらの混合物から選択される材料を含む請求項1〜3のいずれか一項に記載のリチウム電池。
- 前記負極がLi4Ti5O12を含む請求項4に記載のリチウム電池。
- LiFePO4を含む正極及びLi4Ti5O12を含む負極、又は、
LiFePO4を含む正極及びTiO2を含む負極
を含む請求項1〜5のいずれか一項に記載のリチウム電池。 - 前記リチウム塩がLiOHである請求項1〜6のいずれか一項に記載のリチウム電池。
- 前記電解質が、ソーダ溶液及び/又は炭酸カリウム溶液をさらに含む請求項1〜7のいずれか一項に記載のリチウム電池。
- 前記電解質が、ポリマーフィルムによって保持される請求項1〜8のいずれか一項に記載のリチウム電池。
- 前記ポリマーフィルムがポリオレフィン製である請求項9に記載のリチウム電池。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR0757169A FR2920255B1 (fr) | 2007-08-24 | 2007-08-24 | Generateur electrochimique au lithium fonctionnant avec un electrolyte aqueux. |
FR0757169 | 2007-08-24 |
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JP2009110931A true JP2009110931A (ja) | 2009-05-21 |
JP5385565B2 JP5385565B2 (ja) | 2014-01-08 |
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US (1) | US8597828B2 (ja) |
EP (1) | EP2034543B1 (ja) |
JP (1) | JP5385565B2 (ja) |
KR (1) | KR20090021096A (ja) |
CN (1) | CN101373845A (ja) |
AT (1) | ATE528810T1 (ja) |
ES (1) | ES2373931T3 (ja) |
FR (1) | FR2920255B1 (ja) |
PL (1) | PL2034543T3 (ja) |
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WO2017135323A1 (ja) | 2016-02-01 | 2017-08-10 | 株式会社 東芝 | 二次電池、組電池、電池パック、及び車両 |
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- 2008-08-14 PL PL08162358T patent/PL2034543T3/pl unknown
- 2008-08-14 ES ES08162358T patent/ES2373931T3/es active Active
- 2008-08-14 EP EP08162358A patent/EP2034543B1/fr not_active Not-in-force
- 2008-08-19 CN CNA2008101355176A patent/CN101373845A/zh active Pending
- 2008-08-20 US US12/194,715 patent/US8597828B2/en not_active Expired - Fee Related
- 2008-08-21 JP JP2008212689A patent/JP5385565B2/ja not_active Expired - Fee Related
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Cited By (15)
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JP5380537B2 (ja) * | 2009-07-30 | 2014-01-08 | 株式会社東芝 | 非水電解液二次電池 |
WO2011013228A1 (ja) * | 2009-07-30 | 2011-02-03 | 株式会社 東芝 | 非水電解液二次電池 |
JP2011086402A (ja) * | 2009-10-13 | 2011-04-28 | Toyota Central R&D Labs Inc | 水溶液系二次電池 |
US8900746B2 (en) | 2009-10-13 | 2014-12-02 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Aqueous secondary battery |
KR20180101701A (ko) | 2016-02-01 | 2018-09-13 | 가부시끼가이샤 도시바 | 이차 전지, 조전지, 전지 팩 및 차량 |
WO2017135323A1 (ja) | 2016-02-01 | 2017-08-10 | 株式会社 東芝 | 二次電池、組電池、電池パック、及び車両 |
US10727540B2 (en) | 2016-02-01 | 2020-07-28 | Kabushiki Kaisha Toshiba | Secondary battery, battery module, battery pack and vehicle |
EP3667805A1 (en) | 2016-02-01 | 2020-06-17 | Kabushiki Kaisha Toshiba | Secondary battery, battery module, battery pack and vehicle |
JP2017174809A (ja) * | 2016-03-16 | 2017-09-28 | 株式会社東芝 | 二次電池、電池パック、及び車両 |
US10079390B2 (en) | 2016-03-16 | 2018-09-18 | Kabushiki Kaisha Toshiba | Secondary battery, battery pack, and vehicle |
JP2017174810A (ja) * | 2016-03-16 | 2017-09-28 | 株式会社東芝 | 二次電池、電池パック、及び車両 |
JP2018045931A (ja) * | 2016-09-16 | 2018-03-22 | 株式会社東芝 | 二次電池、電池パック及び車両 |
JP2018156840A (ja) * | 2017-03-17 | 2018-10-04 | 株式会社東芝 | 二次電池、電池パック及び車両 |
CN108631008A (zh) * | 2017-03-17 | 2018-10-09 | 株式会社东芝 | 二次电池、电池包及车辆 |
US10868340B2 (en) | 2018-03-23 | 2020-12-15 | Kabushiki Kaisha Toshiba | Secondary battery, battery pack, vehicle, and stationary power supply |
Also Published As
Publication number | Publication date |
---|---|
EP2034543B1 (fr) | 2011-10-12 |
US8597828B2 (en) | 2013-12-03 |
US20090087742A1 (en) | 2009-04-02 |
EP2034543A1 (fr) | 2009-03-11 |
FR2920255B1 (fr) | 2009-11-13 |
JP5385565B2 (ja) | 2014-01-08 |
ES2373931T3 (es) | 2012-02-10 |
KR20090021096A (ko) | 2009-02-27 |
ATE528810T1 (de) | 2011-10-15 |
PL2034543T3 (pl) | 2012-02-29 |
FR2920255A1 (fr) | 2009-02-27 |
CN101373845A (zh) | 2009-02-25 |
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