JP6824406B2 - コーヒー豆抽出物を利用した活性炭素の製造方法 - Google Patents
コーヒー豆抽出物を利用した活性炭素の製造方法 Download PDFInfo
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Description
コーヒー豆から95±1℃および9barの条件下で熱水抽出されたエスプレッソ(espresso)を活性化溶液として準備した。この時、準備したエスプレッソを対象に誘導結合プラズマ放出分光(inductively coupled plasma optical emission spectrometry、ICP−OES、700−ES、Varian社)を測定した結果、溶液内に存在するカリウムイオン(K+)の含量は2112±10mg/Lと確認された。その後、準備した前記エスプレッソ(20ml)に横10.7cmおよび縦21cmの紙(キムワイプス、柳韓キンバリー)を浸漬させてエスプレッソを紙に吸収させ、120±2℃で6±0.5時間の間乾燥させた。エスプレッソを吸収させた紙が乾燥すると窒素600±10℃、ガス雰囲気で熱処理して活性炭素を製造した。この時、熱処理時間は下記の表1に示したし、紙に吸収されたエスプレッソの吸収量は単位重さ(1mg)当たり0.02±0.002mlであった。
蒸溜水(ICP−OES測定されたK+含量:3mg/L)を準備し、準備した蒸溜水に横10.7cmおよび縦21cmの紙(キムワイプス、柳韓キンバリー)を浸漬させて吸収した後、120±2℃で6±0.5時間の間乾燥させた。紙が乾燥すると窒素600±10℃、ガス雰囲気で2時間の間熱処理して活性炭素を製造した。
実施例3で製造された活性炭素、多重壁炭素ナノチューブ(MWNT)およびポリテトラフルオロエチレン(polytetrafluoroethylene、PTFE)を85:10:5(w/w/w)の重量比率で混合し、多孔性ニッケル集電体(Nickel foam)に圧延機を利用した圧着工程を遂行して電極を製造した。
前記実施例5で実施例3で製造された活性炭素を使う代わりに比較例1で製造された活性炭素を使うことを除いては前記実施例5と同じ方法で遂行して二重層スーパーキャパシタを製造した。
本発明により製造される活性炭素の生成温度、成分および構造を確認するために下記のような実験を遂行した。
コーヒー豆を熱水抽出したエスプレッソを活性化溶液として使う場合、セルロースの炭化に及ぼす影響を確認するために、実施例1と同じ方法で活性化溶液を準備し、準備した活性化溶液に横10.7cmおよび縦21cmの紙(キムワイプス、柳韓キンバリー)を浸漬させてエスプレッソを紙に吸収させた。その後、前記紙を120±2℃で6±0.5時間の間乾燥させ、乾燥した紙の熱重量分析(thermogravimetric analysis)を遂行した。この時、前記熱重量分析は窒素ガス雰囲気で遂行されたし、昇温速度は5±0.1℃/minで調節した。また、対照群としてエスプレッソを吸収していない横10.7cmおよび縦21cmの紙(キムワイプス、柳韓キンバリー)を使ったし、その結果を下記の表2に示した。
活性炭素の成分を確認するために、実施例1〜3と比較例1で製造された活性炭素を対象にエネルギー分散分光器(energy dispersive spectroscopy、EDS)が装着された走査電子顕微鏡(scanning electron microscope、SEM、加速電圧:20eV)観察を遂行した。また、ラマン分光(Raman spectroscopy)、X線回折(X−ray diffraction、XRD)およびX線光電子分光(X−ray photoelectron spectroscopy、XPS、K−alphaTM+ XPS system、Thermo ScientificTM)分析を遂行した。ここで、前記X線回折は40kVおよび40mA(CuKα照射、λ=0.154056nm)条件下で遂行したし、その結果は図2〜図4に示した。
実施例1〜3および比較例1で製造された活性炭素を対象にBET比表面積、細孔の体積および細孔平均直径を測定した。この時、BET比表面積は77K、窒素ガス雰囲気で物理吸着分析器(physisorption analyzer ASAP2020、Micromeritics)を利用して測定したし、その結果は表3および図5に示した。
本発明により製造された活性炭素を電極に含有するスーパーキャパシタの性能を確認するために、下記のような実験を遂行した。
Claims (10)
- 活性化溶液が吸収されたセルロースを熱処理して活性炭素を製造する段階を含み、
前記活性化溶液は、コーヒー豆から由来する抽出物であることを特徴とする、活性炭素の製造方法。 - 活性化溶液は、コーヒー豆を熱水抽出したことを特徴とする、請求項1に記載の活性炭素の製造方法。
- 活性化溶液は1bar〜20barの圧力で熱水抽出されたことを特徴とする、請求項1に記載の活性炭素の製造方法。
- 活性化溶液は、カリウムイオン(K+)、ソディウムイオン(Na+)および亜鉛イオン(Zn 2+ )からなる群から選択される1種以上の金属イオンを含み、
前記金属イオンの濃度はそれぞれ50mg/L以上であることを特徴とする、請求項1に記載の活性炭素の製造方法。 - セルロースは、緑色植物、緑・海草類または微生物から得られることを特徴とする、請求項1に記載の活性炭素の製造方法。
- 熱処理温度は、100〜1,000℃である、請求項1に記載の活性炭素の製造方法。
- 熱処理時間は、5分〜300分である、請求項1に記載の活性炭素の製造方法。
- 活性化溶液が吸収されたセルロースを熱処理して活性炭素を製造する段階の前に、
セルロースを活性化溶液に浸漬させる段階;および
浸漬されたセルロースを乾燥させる段階をさらに含む、請求項1に記載の活性炭素の製造方法。 - 活性化溶液の吸収量は、セルロース単位重さ(1mg)当たり0.001ml〜0.1mlであることを特徴とする、請求項8に記載の活性炭素の製造方法。
- 活性炭素は平均比表面積が30m 2 /g〜2,000m 2 /gである、請求項1に記載の活性炭素の製造方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160164911A KR101871174B1 (ko) | 2016-12-06 | 2016-12-06 | 커피콩 추출물을 이용한 활성 탄소의 제조방법 및 이를 포함하는 전지용 전극 |
| KR10-2016-0164911 | 2016-12-06 | ||
| PCT/KR2016/014236 WO2018105766A1 (ko) | 2016-12-06 | 2016-12-06 | 커피콩 추출물을 이용한 활성 탄소의 제조방법 및 이를 포함하는 전지용 전극 |
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| Publication Number | Publication Date |
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| JP2020513390A JP2020513390A (ja) | 2020-05-14 |
| JP6824406B2 true JP6824406B2 (ja) | 2021-02-03 |
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| US (1) | US20190393504A1 (ja) |
| JP (1) | JP6824406B2 (ja) |
| KR (1) | KR101871174B1 (ja) |
| WO (1) | WO2018105766A1 (ja) |
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| CN109585181A (zh) * | 2018-10-17 | 2019-04-05 | 上海交通大学 | 基于褐藻egg-box结构的储锂用掺氮多孔碳正极材料的制备方法 |
| WO2020203720A1 (ja) * | 2019-03-29 | 2020-10-08 | サントリーホールディングス株式会社 | 茶芳香組成物の製造方法 |
| AT523171B1 (de) * | 2020-02-21 | 2021-06-15 | Papierholz Austria Gmbh | Elektrisch leitfähiges Material, Verfahren zu seiner Herstellung sowie Verwendung desselben |
| CN111215031B (zh) * | 2020-03-18 | 2022-06-14 | 重庆三峡学院 | 一种高纯生物炭的制备方法 |
| CN112290025B (zh) * | 2020-11-11 | 2023-04-25 | 瓮福(集团)有限责任公司 | 一种基于碳化海带的电极材料的制备方法和锂硫电池 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001122608A (ja) * | 1999-10-26 | 2001-05-08 | Tokyo Gas Co Ltd | 細孔構造が制御された活性炭およびその製造方法 |
| JP5665742B2 (ja) * | 2008-08-05 | 2015-02-04 | ダウ グローバル テクノロジーズ エルエルシー | 充電式リチウム電池用のカソード活性材料としてのリチウム金属ホスフェート/炭素ナノコンポジット |
| KR101525534B1 (ko) * | 2012-12-31 | 2015-06-03 | 인하대학교 산학협력단 | 알칼리계 활성화제로 활성화 처리된 활성탄소 및 이를 이용한 슈퍼커패시터용 전극 |
| KR101565036B1 (ko) | 2013-12-09 | 2015-11-02 | 한국에너지기술연구원 | 3차원 계층구조의 바이오 나노 활성탄 및 제조방법 |
| JP2016150870A (ja) * | 2015-02-17 | 2016-08-22 | Jxエネルギー株式会社 | 活性炭の製造方法及び活性炭を含む電極 |
| CN105883803A (zh) * | 2016-04-08 | 2016-08-24 | 合肥工业大学 | 一种基于木质素黑液的中大孔径炭材料的制备方法 |
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- 2016-12-06 KR KR1020160164911A patent/KR101871174B1/ko active Active
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- 2016-12-06 WO PCT/KR2016/014236 patent/WO2018105766A1/ko not_active Ceased
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| Publication number | Publication date |
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| WO2018105766A1 (ko) | 2018-06-14 |
| KR20180065046A (ko) | 2018-06-18 |
| JP2020513390A (ja) | 2020-05-14 |
| KR101871174B1 (ko) | 2018-07-02 |
| US20190393504A1 (en) | 2019-12-26 |
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