JP6106339B2 - 分散剤、その製造方法およびこれを含む炭素系素材の分散組成物 - Google Patents
分散剤、その製造方法およびこれを含む炭素系素材の分散組成物 Download PDFInfo
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Description
ポスコから入手した石油副産物であるピッチ(pitch)に対して次のような酸化工程および精製工程を行って実施例1の分散剤を製造した。
ポスコから入手した石油副産物であるピッチ(pitch;但し、実施例1とは異なるサンプルのピッチ使用)を使用し、酸化反応時間をそれぞれ1時間(実施例2)、3.5時間(実施例3)および7時間(実施例4)と別にしたことを除いては実施例1と同様な方法で実施例2乃至4の分散剤をそれぞれ製造した。
商用化された下記化学式1の分散剤(PNE)を比較例1とし、化学式2の分散剤(PNS)を比較例2とした。
実施例3および4で得られた分散剤試料薬1mgを薄いホイルの上で約900℃内外の高温で加熱した。この時、ホイルが瞬間的に溶けながらその温度が約1500乃至1800℃まで上昇し、このような高温によって前記試料から気体が発生した。このような気体を捕集および元素分析して炭素、酸素、水素および窒素の各元素含量を測定および分析した。このような分析結果は各分散剤製造のために使用されたピッチに対する分析結果と比較して下記表1に示した。
(1).実施例1の分散剤15mgを蒸留水100mlにソニケーション(sonication)を通じて分散させた後に、炭素系素材としてグラファイト(Graphite)0.5gを入れ、高速ホモジナイザー(high speed homogenizer)を用いて12000rpmで一時間程度攪拌し、連続的に超音波処理機 (Tip−sonicator)を用いて400W中の80%のパワー(即ち、320Wパワー)で30分間隔で二回処理して分散させた。また、実施例2乃至4の分散剤に対しても、炭素系素材としてグラファイト(Graphite)に対して高速ホモジナイザー(high speed homogenizer)とチップソニケーション(tip sonication)などを用いてグラフェンフレーク(Graphene flake)への剥離および分散を行い、前記グラフェンフレークに対する分散剤の分散力を実施例1と同様な方法で評価した。
Claims (13)
- グラフェン(graphene)、グラファイト(graphite)、カーボンブラック、フラーレン系素材およびこれらの誘導体からなる群より選択された1種以上の炭素系素材の溶媒内分散のために使用される、
複数種のポリ芳香族炭化水素酸化物の混合物であって、
分子量300乃至1000のポリ芳香族炭化水素酸化物を60重量%以上の含量で含んだ混合物を含む分散剤。 - 複数種のポリ芳香族炭化水素酸化物を元素分析した時、酸素含量が全体元素含量の12乃至50重量%である請求項1に記載の分散剤。
- ポリ芳香族炭化水素酸化物は、5乃至30個のベンゼン環が含まれている芳香族炭化水素に酸素含有官能基が一つ以上結合された構造を有する請求項1または2に記載の分散剤。
- 芳香族炭化水素は、7乃至20個のベンゼン環を構造内に有する請求項3に記載の分散剤。
- 酸素含有官能基は、ヒドロキシ基、エポキシ基、カルボキシ基、ニトロ基およびスルホン基からなる群より選択された1種以上を含む請求項3または4に記載の分散剤。
- 酸化剤の存在下に、分子量200乃至1500のポリ芳香族炭化水素を含む混合物を酸化する段階を含む請求項1〜5のいずれか一項の分散剤の製造方法。
- 酸化剤は、硝酸(HNO3)、硫酸(H2SO4)、過酸化水素(H2O2)、アンモニウムセリウム(IV)硫酸塩(Ammonium cerium(IV) sulfate;(NH4)4Ce(SO4)4)およびアンモニウムセリウム(IV)硝酸塩(Ammonium cerium(IV) nitrate;(NH4)2Ce(NO3)6)からなる群より選択された1種以上を含む請求項6に記載の分散剤の製造方法。
- 分子量200乃至1500のポリ芳香族炭化水素を含む混合物は、5乃至50個のベンゼン環が含まれている芳香族炭化水素を複数種含む請求項6または7に記載の分散剤の製造方法。
- 酸化段階は、水溶媒内で、10乃至90℃の反応温度下に0.5乃至20時間行われる請求項6〜8のいずれか一項に記載の分散剤の製造方法。
- 分子量200乃至1500のポリ芳香族炭化水素を含む混合物は、化石燃料またはその産物から得られたピッチ(pitch)に由来する請求項6〜9のいずれか一項に記載の分散剤の製造方法。
- 酸化段階後に、その結果物を精製して複数種のポリ芳香族炭化水素酸化物の混合物を得る段階をさらに含む請求項6〜10のいずれか一項に記載の分散剤の製造方法。
- 精製段階は、酸化段階の結果物を遠心分離する段階を含む請求項11に記載の分散剤の製造方法。
- グラフェン(graphene)、グラファイト(graphite)、カーボンブラック、フラーレン系素材およびこれらの誘導体からなる群より選択された1種以上である炭素系素材;および
請求項1〜5のいずれか一項の分散剤を含む炭素系素材の分散組成物。
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KR1020140098033A KR20150016123A (ko) | 2013-08-01 | 2014-07-31 | 분산제, 이의 제조 방법 및 이를 포함하는 탄소계 소재의 분산 조성물 |
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JP (1) | JP6106339B2 (ja) |
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JP2017500702A (ja) * | 2013-12-27 | 2017-01-05 | エルジー・ケム・リミテッド | 導電材組成物、これを使用したリチウム二次電池の電極形成用スラリー組成物およびリチウム二次電池 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016523439A (ja) * | 2013-08-01 | 2016-08-08 | エルジー・ケム・リミテッド | 導電材組成物、これを用いたリチウム二次電池の電極形成用スラリー組成物およびリチウム二次電池 |
JP2017500702A (ja) * | 2013-12-27 | 2017-01-05 | エルジー・ケム・リミテッド | 導電材組成物、これを使用したリチウム二次電池の電極形成用スラリー組成物およびリチウム二次電池 |
US10033044B2 (en) | 2013-12-27 | 2018-07-24 | Lg Chem, Ltd. | Conducting material composition, and slurry composition for forming electrode of lithium rechargeable battery and lithium rechargeable battery using the same |
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KR101858719B1 (ko) | 2018-05-16 |
US10569243B2 (en) | 2020-02-25 |
EP3002313A1 (en) | 2016-04-06 |
WO2015016639A1 (ko) | 2015-02-05 |
US20170001161A1 (en) | 2017-01-05 |
EP3002313A4 (en) | 2017-03-29 |
CN105452360B (zh) | 2017-11-17 |
CN105452360A (zh) | 2016-03-30 |
KR20170015443A (ko) | 2017-02-08 |
TWI542643B (zh) | 2016-07-21 |
JP2016525589A (ja) | 2016-08-25 |
EP3002313B1 (en) | 2019-07-31 |
KR20150016123A (ko) | 2015-02-11 |
TW201522519A (zh) | 2015-06-16 |
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