JP6469725B2 - ガルバニ素子およびその製造方法 - Google Patents
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Description
リチウムイオン電池は、特に非常に高い比エネルギと極端に少ない自己放電とによって優れている。リチウムイオン電池は、少なくとも1つの正極と少なくとも1つの負極(カソード乃至アノード)を有する。この場合バッテリの充放電の間、リチウムイオンは、一方の電極から他方の電極に移動する。リチウムイオンの移送のために、いわゆるリチウムイオン伝導体は必要である。例えば民生分野(携帯電話、MP3プレーヤなど)において、あるいは電気自動車若しくはハイブリッド自動車のエネルギ蓄積器として用いられる、現在使用されているリチウムイオン電池では、リチウムイオン伝導体は、液状電解質であり、これは多くの場合、有機溶媒中に溶解されたリチウム支持塩(支持電解質)、リチウムヘキサフルオロリン酸塩(LiPF6)を含んでいる。リチウムイオン電池は、電極、リチウムイオン伝導体、並びに電気的接続を形成する電流導体を含んでいる。
本発明では、ガルバニ素子の製造方法が提案されており、この方法は、以下のステップ、すなわち、
a)アノードに割り当てられた電流導体と、イオン伝導性でかつ電気絶縁性のセパレータと、リチウムを含有したカソード材料を含むカソードと、該カソードに割り当てられた電流導体とをこの順に含む積層体を形成するステップと、
b)ガルバニ素子を充電するステップと、
を含み、
前記ガルバニ素子の充電の際に、前記アノードに割り当てられた電流導体と前記セパレータとの間に、金属系リチウムを含むアノードが形成される。
本発明による方法によれば、より大きな容量と高いエネルギ密度を有するガルバニ素子を製造することが可能である。大きな容量は、金属系リチウムのアノードを使用することによって達成される。このアノードの高いエネルギ密度は、好ましくはイオン伝導性のセパレータと組み合わされ、そのため液状電解質を省くことが可能になる。好ましい実施形態では、イオン伝導性のセパレータとしてリチウムガーネットの使用が提案されており、これは特に高いイオン伝導性を保証し、それによって高いエネルギ密度の他にも、ガルバニ素子の高い効率を保証する。製造されたセパレータは、5%未満の残留多孔性を有している。この場合連続的な多孔性は存在しておらず、そのためこのセパレータは完全に密である。
Claims (8)
- ガルバニ素子(10)の製造方法であって、
a)アノードに割り当てられた電流導体(12)と、イオン伝導性でかつ電気絶縁性のセパレータ(16)と、リチウムを含有したカソード材料を含むカソード(18)と、前記カソードに割り当てられた電流導体(22)とをこの順に含む積層体を形成するステップと、
b)前記ガルバニ素子(10)を充電するステップと、
を含み、
前記ガルバニ素子(10)の充電のもとで、前記アノードに割り当てられた前記電流導体(12)と前記セパレータ(16)との間に、金属系リチウムを含んだアノード(14)が形成され、
前記セパレータ(16)の材料は、リチウム伝導性ガーネットであり、
前記カソード(18)のカソード材料は、正極活物質(20)と導電性材料とカソライトとを含む混合物である、
ことを特徴とする方法。 - 前記セパレータ(16)は、エアロゾルコーティングまたはパルスレーザ蒸着法を用いて被着される、請求項1に記載の方法。
- 前記セパレータ(16)の材料は、リチウムガーネットである、請求項1または2に記載の方法。
- 前記正極活物質(20)は、LiFおよび金属、リチウム化された遷移金属酸化物またはリチウム化された硫黄を含有する複合材料から選択される、請求項1乃至3いずれか1項に記載の方法。
- 前記カソライトは、ポリエチレンオキシド(PEO)ベースの電解質である、請求項1乃至4いずれか1項に記載の方法。
- 前記導電性材料は、カーボンナノチューブ、導電性カーボンブラック、グラフェン、グラファイト、または、これらの材料の少なくとも2つの組合せから選択される、請求項1乃至5いずれか1項に記載の方法。
- セルハウジングおよび請求項1乃至6いずれか1項に記載の方法により製造されたガルバニ素子(10)を備えるバッテリセル。
- 請求項7に記載の1つ以上のバッテリセルを備えるバッテリ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014208228.5 | 2014-04-30 | ||
DE102014208228.5A DE102014208228A1 (de) | 2014-04-30 | 2014-04-30 | Galvanisches Element und Verfahren zu dessen Herstellung |
PCT/EP2015/057624 WO2015165701A2 (de) | 2014-04-30 | 2015-04-08 | Galvanisches element und verfahren zu dessen herstellung |
Publications (3)
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JP2017517842A JP2017517842A (ja) | 2017-06-29 |
JP2017517842A5 JP2017517842A5 (ja) | 2017-12-14 |
JP6469725B2 true JP6469725B2 (ja) | 2019-02-13 |
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JP2016565242A Expired - Fee Related JP6469725B2 (ja) | 2014-04-30 | 2015-04-08 | ガルバニ素子およびその製造方法 |
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Country | Link |
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US (1) | US20170054139A1 (ja) |
JP (1) | JP6469725B2 (ja) |
KR (1) | KR20160146745A (ja) |
DE (1) | DE102014208228A1 (ja) |
WO (1) | WO2015165701A2 (ja) |
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DE102012205931A1 (de) | 2012-04-12 | 2013-10-17 | Robert Bosch Gmbh | Elektrochemischer Energiespeicher und Verfahren zum Herstellen desselben |
JP5447578B2 (ja) * | 2012-04-27 | 2014-03-19 | 株式会社豊田自動織機 | 固体電解質及び二次電池 |
US8974946B2 (en) * | 2013-03-15 | 2015-03-10 | Gm Global Technology Operations | Coating for separator or cathode of lithium—sulfur or silicon—sulfur battery |
-
2014
- 2014-04-30 DE DE102014208228.5A patent/DE102014208228A1/de active Pending
-
2015
- 2015-04-08 WO PCT/EP2015/057624 patent/WO2015165701A2/de active Application Filing
- 2015-04-08 KR KR1020167029878A patent/KR20160146745A/ko not_active Application Discontinuation
- 2015-04-08 JP JP2016565242A patent/JP6469725B2/ja not_active Expired - Fee Related
- 2015-04-08 US US15/307,072 patent/US20170054139A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022180451A1 (en) * | 2021-02-25 | 2022-09-01 | Xponential Battery Materials B.V. | Biomass derived porous carbon materials, composites and methods of production |
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JP2017517842A (ja) | 2017-06-29 |
WO2015165701A3 (de) | 2016-02-04 |
KR20160146745A (ko) | 2016-12-21 |
DE102014208228A1 (de) | 2015-11-05 |
US20170054139A1 (en) | 2017-02-23 |
WO2015165701A2 (de) | 2015-11-05 |
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