JP2015527288A - 電気化学的高レート蓄電材料、方法および電極 - Google Patents
電気化学的高レート蓄電材料、方法および電極 Download PDFInfo
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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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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- C01—INORGANIC CHEMISTRY
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- C01B32/00—Carbon; Compounds thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
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- H01G11/22—Electrodes
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- H01M4/624—Electric conductive fillers
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Abstract
Description
20 負極
22 電流コレクタ
24 導電性中間被覆
26 リチウム電池
30 正極
40 電気化学的活性部材
50 イオン
60 電解質
Claims (10)
- 非活性の、大半が非黒鉛の無定形炭素材料を製造する方法において、
炭化前駆体材料を提供する工程、
約500m2/g未満の比表面積を有し、黒鉛含有量が約20質量%未満の熱処理した炭素材料を生成するのに十分な温度で、十分な期間に亘り、前記炭化前駆体材料を第1の加熱工程で加熱する工程、
前記熱処理した炭素材料を、酸性化学種を含む酸性化学溶液および塩基性化学種を含む塩基性化学溶液の少なくとも一方で洗浄することによって、該熱処理した炭素材料を精製して、精製した熱処理した炭素材料を生成する工程、および
約500m2/g未満の比表面積を有し、黒鉛含有量が約20質量%未満の、非活性の、大半が非黒鉛の無定形炭素材料を生成するのに十分な温度で、十分な期間に亘り、前記精製した熱処理した炭素材料を第2の加熱工程で加熱する工程、
を有してなる方法。 - 前記非活性の、大半が非黒鉛の無定形炭素材料が、約2:1未満のラマン黒鉛化比を有する、請求項1記載の方法。
- 前記非活性の、大半が非黒鉛の無定形炭素材料が、約25:1未満のX線黒鉛化比を有する、請求項1または2記載の方法。
- 前記熱処理した炭素材料の黒鉛含有量が約10質量%未満であり、前記非活性の、大半が非黒鉛の無定形炭素材料の黒鉛含有量が約10質量%未満である、請求項1から3いずれか1項記載の方法。
- 前記精製する工程が、前記熱処理した炭素材料を前記塩基性化学溶液で濯ぐ前に、該熱処理した炭素材料を前記酸性化学溶液で濯ぐ工程を含む、請求項1から4いずれか1項記載の方法。
- 前記第2の加熱工程の前に、前記精製した熱処理した炭素材料を水で濯ぐ工程をさらに含む、請求項1から5いずれか1項記載の方法。
- 非活性の、大半が非黒鉛の無定形炭素材料を製造する方法において、
炭化前駆体材料を提供する工程、
約500m2/g未満の比表面積を有し、約2:1未満のラマン黒鉛化比および約25:1未満のX線黒鉛化比の少なくとも一方を有する熱処理した炭素材料を生成するのに十分な温度で、十分な期間に亘り、前記炭化前駆体材料を第1の加熱工程で加熱する工程、
前記熱処理した炭素材料を、酸性化学種を含む酸性化学溶液および塩基性化学種を含む塩基性化学溶液の少なくとも一方で洗浄することによって、該熱処理した炭素材料を精製して、精製した熱処理した炭素材料を生成する工程、および
約500m2/g未満の比表面積を有し、約2:1未満のラマン黒鉛化比および約25:1未満のX線黒鉛化比の少なくとも一方を有する、非活性の、大半が非黒鉛の無定形炭素材料を生成するのに十分な温度で、十分な期間に亘り、前記精製した熱処理した炭素材料を第2の加熱工程で加熱する工程、
を有してなる方法。 - 負極、正極および電解質を備えたリチウムイオン電池において、前記負極は、約500m2/g未満の比表面積を有しかつ黒鉛含有量が約20質量%未満の、非活性の、大半が非黒鉛の無定形炭素材料を含んでいる、リチウムイオン電池。
- 約500m2/g未満の比表面積および約20質量%未満の黒鉛含有量を有する、非活性の、大半が非黒鉛の無定形炭素材料。
- 約2:1未満のラマン黒鉛化比および約25:1未満のX線黒鉛化比を有する、請求項9記載の非活性の、大半が非黒鉛の無定形炭素材料。
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