JP2013519187A - 高エネルギーLiイオンバッテリ用の段階的な電極技術 - Google Patents
高エネルギーLiイオンバッテリ用の段階的な電極技術 Download PDFInfo
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Abstract
Description
Claims (15)
- 段階的なカソード構造であって、
導電性基板と、
導電性基板上に形成される第1の気孔率を有する第1のカソード活性材料を含む第1の多孔質層と、
第1の多孔質層上に形成される第2の気孔率を有する第2のカソード活性材料を含む第2の多孔質層と
を備え、第1の気孔率が、第2の気孔率未満である段階的なカソード構造。 - 導電性基板が、アルミニウムを含む、請求項1に記載の段階的なカソード構造。
- 第1のカソード活性材料および第2のカソード活性材料が、二酸化リチウムコバルト(LiCoO2)、二酸化リチウムマンガン(LiMnO2)、二硫化チタン(TiS2)、LiNixCo1−2xMnO2、LiMn2O4、LiFePO4、LiFe1−xMgPO4、LiMoPO4、LiCoPO4、Li3V2(PO4)3、LiVOPO4、LiMP2O7、LiFe1.5P2O7、LiVPO4F、LiAlPO4F、Li5V(PO4)2F2、Li5Cr(PO4)2F2、Li2CoPO4F、Li2NiPO4F、Na5V2(PO4)2F3、Li2FeSiO4、Li2MnSiO4、Li2VOSiO4、LiNiO2、およびそれらの組み合わせを含む群から個々に選択される、請求項1に記載の段階的なカソード構造。
- 第1のカソード活性材料が、第2のカソード活性材料の粒径未満である粒径を有する、請求項3に記載の段階的なカソード構造。
- 第1のカソード活性材料の粒径が、約2μm〜約15μmの直径を有し、第2のカソード活性材料の粒径が、約2μm〜約15μmの直径を有する、請求項4に記載の段階的なカソード構造。
- 第1のカソード活性材料の粒径が、約1nm〜約100nmの直径を有し、第2のカソード活性材料の粒径が、約1nm〜約100nmの直径を有する、請求項4に記載の段階的なカソード構造。
- 第1の気孔率が、同じ材料から形成された固体膜に比べて約20%〜約35%であり、第2の気孔率が、同じ材料から形成された固体膜に比べて約40%〜約70%である、請求項1に記載の段階的なカソード構造。
- 段階的なカソード構造を形成する方法であって、
導電性基板を用意するステップと、
導電性基板上に第1の気孔率を有する第1のカソード活性材料を含む第1の多孔質層を堆積させるステップと、
導電性基板上に第2の気孔率を有する第2のカソード活性材料を含む第2の多孔質層を堆積させるステップと
を含み、第2の気孔率が第1の気孔率より大きい方法。 - 第1の多孔質層をカレンダリングして、第1の気孔率を第3の気孔率まで減少させるステップをさらに含む、請求項8に記載の方法。
- 導電性基板がアルミニウムを含む、請求項8に記載の方法。
- 第1のカソード活性材料および第2のカソード活性材料が、二酸化リチウムコバルト(LiCoO2)、二酸化リチウムマンガン(LiMnO2)、二硫化チタン(TiS2)、LiNixCo1−2xMnO2、LiMn2O4、LiFePO4、LiFe1−xMgPO4、LiMoPO4、LiCoPO4、Li3V2(PO4)3、LiVOPO4、LiMP2O7、LiFe1.5P2O7、LiVPO4F、LiAlPO4F、Li5V(PO4)2F2、Li5Cr(PO4)2F2、Li2CoPO4F、Li2NiPO4F、Na5V2(PO4)2F3、Li2FeSi04、Li2MnSiO4、Li2VOSiO4、LiNiO2、およびそれらの組み合わせを含む群から独立して選択される、請求項8に記載の方法。
- 第1の気孔率が、同じ材料から形成された固体膜に比べて約20%〜約35%であり、第2の気孔率が、同じ材料から形成された固体膜に比べて約40%〜約70%である、請求項8に記載の方法。
- 第1の気孔率が、同じ材料から形成された固体膜に比べて約40%〜約50%であり、第2の気孔率が、同じ材料から形成された固体膜に比べて約40%〜約50%であり、第3の気孔率が、同じ材料から形成された固体膜に比べて約30%〜約35%である、請求項9に記載の方法。
- 第1の多孔質層を堆積させるステップが、静電スプレープロセスを実行することを含み、第2の多孔質層を堆積させるステップが、スリットコーティングプロセスを実行することを含む、請求項8に記載の方法。
- 第1のカソード活性材料が、約2μm〜約15μmの第1の直径を有する粒子を含み、第2のカソード活性材料が、約2μm〜約15μmの第1の直径を有する第2の直径を有する粒子を含み、第2の直径が、第1の直径より大きい、請求項8に記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US29462810P | 2010-01-13 | 2010-01-13 | |
US61/294,628 | 2010-01-13 | ||
US12/953,143 | 2010-11-23 | ||
US12/953,143 US20110168550A1 (en) | 2010-01-13 | 2010-11-23 | Graded electrode technologies for high energy lithium-ion batteries |
PCT/US2010/058215 WO2011087588A2 (en) | 2010-01-13 | 2010-11-29 | Graded electrode technologies for high energy lithium-ion batteries |
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JP2013519187A5 JP2013519187A5 (ja) | 2014-01-23 |
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US (1) | US20110168550A1 (ja) |
JP (1) | JP2013519187A (ja) |
KR (1) | KR20120114354A (ja) |
CN (1) | CN102754247A (ja) |
TW (1) | TWI518972B (ja) |
WO (1) | WO2011087588A2 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015025466A1 (ja) * | 2013-08-22 | 2015-02-26 | 株式会社豊田自動織機 | 正極活物質層上に熱暴走抑制層を具備する正極を有するリチウムイオン二次電池 |
JP2015170464A (ja) * | 2014-03-06 | 2015-09-28 | 旭化成株式会社 | 非水電解質二次電池 |
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CN102754247A (zh) | 2012-10-24 |
WO2011087588A2 (en) | 2011-07-21 |
TW201125192A (en) | 2011-07-16 |
KR20120114354A (ko) | 2012-10-16 |
WO2011087588A3 (en) | 2011-10-06 |
US20110168550A1 (en) | 2011-07-14 |
TWI518972B (zh) | 2016-01-21 |
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