JP2019009252A - 強誘電体炭素複合材料及びその製造方法 - Google Patents
強誘電体炭素複合材料及びその製造方法 Download PDFInfo
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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
- Y02E60/13—Energy storage using capacitors
Abstract
Description
(1)混合工程では、エタノールに活性炭と強誘電体とを加えて湿式ボールミルで攪拌混合していること。
(2)強誘電体を0.7〜1.5mol%としていること。
(3)強誘電体が、BaTiO3、BaxSr1-xTiO3(x = 0.4〜0.8)、またはBaZrxTi1-xO3(x = 0.2〜0.5)の少なくともいずれか1種であること。
まず、活性炭に添加する強誘電体BaTiO3の添加量の依存性を確認した。ここで、母材である正極活性炭としては、株式会社ユー・イー・エスのUCG-CPTを用い、平均粒径5μmであった。また、チタン酸バリウムBaTiO3のナノ粒子としては、堺化学工業株式会社のKZM-50を用い、平均粒径50nmであった。以下において、説明の便宜上、チタン酸バリウムBaTiO3を、単に「BT」と表記する。
上述した実施例1と同一の母材活性炭を用い、強誘電体のBTではなく、常誘電体のアルミナAl2O3を用いた場合の比較試験を行った。アルミナAl2O3の比誘電率は10程度であり、バルクセラミックスの状態で比誘電率が2000〜3000であるBTに比べて大幅に小さい。
Claims (7)
- 活性炭の表面にナノ粒子状の強誘電体を担持さた強誘電体炭素複合材料において、
前記強誘電体を0.7〜1.5mol%としている強誘電体炭素複合材料。 - 前記強誘電体が、BaTiO3、BaxSr1-xTiO3(x = 0.4〜0.8)、またはBaZrxTi1-xO3(x = 0.2〜0.5)の少なくともいずれか1種である請求項1に記載の強誘電体炭素複合材料。
- 請求項1または請求項2に記載の強誘電体炭素複合材料からなるリチウムイオンキャパシタ用正極材料。
- 活性炭の表面にナノ粒子状の強誘電体を担持さた強誘電体炭素複合材料の製造方法において、
粉末状の前記活性炭とナノ末状の前記強誘電体と混合して混合材料を作製する混合工程と、
前記混合粉末を加熱して前記強誘電体を前記活性炭に焼結させる焼結工程と
を有する強誘電体炭素複合材料の製造方法。 - 前記混合工程では、エタノールに前記活性炭と前記強誘電体とを加えて湿式ボールミルで攪拌混合している請求項4に記載の強誘電体炭素複合材料の製造方法。
- 前記強誘電体を0.7〜1.5mol%としている請求項4または請求項5に記載の強誘電体炭素複合材料の製造方法。
- 前記強誘電体が、BaTiO3、BaxSr1-xTiO3(x = 0.4〜0.8)、またはBaZrxTi1-xO3(x = 0.2〜0.5)の少なくともいずれか1種である請求項4〜6のいずれか1項に記載の強誘電体炭素複合材料の製造方法。
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Citations (4)
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KR20070070611A (ko) * | 2005-12-29 | 2007-07-04 | 엘지전자 주식회사 | 전기 이중층 캐패시터, 전기 이중층 캐패시터용 분극전극및 이들의 제조방법 |
JP2011199231A (ja) * | 2010-03-17 | 2011-10-06 | Goro Igarashi | 活性炭素の蓄電器または蓄電池 |
CN102364729A (zh) * | 2011-11-10 | 2012-02-29 | 中南大学 | 一种高功率Li4Ti5O12/活性炭复合电极材料及其制备方法 |
JP2016149270A (ja) * | 2015-02-12 | 2016-08-18 | 国立大学法人 岡山大学 | リチウムイオン電池の正極材料の製造方法及びこの方法で製造した電極材料 |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR20070070611A (ko) * | 2005-12-29 | 2007-07-04 | 엘지전자 주식회사 | 전기 이중층 캐패시터, 전기 이중층 캐패시터용 분극전극및 이들의 제조방법 |
JP2011199231A (ja) * | 2010-03-17 | 2011-10-06 | Goro Igarashi | 活性炭素の蓄電器または蓄電池 |
CN102364729A (zh) * | 2011-11-10 | 2012-02-29 | 中南大学 | 一种高功率Li4Ti5O12/活性炭复合电极材料及其制备方法 |
JP2016149270A (ja) * | 2015-02-12 | 2016-08-18 | 国立大学法人 岡山大学 | リチウムイオン電池の正極材料の製造方法及びこの方法で製造した電極材料 |
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