JP2017143148A - 熱電変換材料、熱電変換素子及び熱電変換モジュール - Google Patents
熱電変換材料、熱電変換素子及び熱電変換モジュール Download PDFInfo
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Abstract
Description
(a)周期表第13族元素または周期表第15族元素を含み、且つπ電子共役系の分子構造を有するルイス酸
(b)周期表第15族元素を含み、且つπ電子共役系の分子構造を有するルイス塩基
Z=S2σ/κ
式中、Sは熱電変換材料のゼーベック係数、σは熱電変換材料の導電率、κは熱電変換材料の熱伝導率である。S2σの項をまとめて出力因子(パワーファクター、Pf)という。Zは温度の逆数の次元を有する。ゼーベック係数S及び熱電率σが高く、熱伝導率κが低い方が熱電変換性能に優れる。
上記カーボンナノチューブ及びポリスチレン等の有機材料を含む熱電変換材料の場合、上記カーボンナノチューブのみからなる熱電変換材料と比べて出力因子が小さい。他方、本発明の熱電変換材料は、フッ素ゴムを含むものであるので、上記カーボンナノチューブのみからなる熱電変換材料と比べて出力因子が大きいという特異な効果が観察されることが見出された。
4探針法(三菱化学アナリテック社製、ロレスタGP)を用いて測定した。
ゼーベック効果測定装置(NMRテクノロジーズ社製、SB−100)を用いて測定した。
乾燥した単層カーボンナノチューブ(SWNT)(5mg)を、メチルイソブチルケトン(10mL)にホモジナイザー(IKAウルトラタックス社製、T25 デジタル)を用いて分散させた。ホモジナイザーの撹拌速度(回転数)を20000rpmとし、室温(23℃)にて10分間撹拌した。得られた分散液をシャーレにソルベントキャストし、減圧乾燥して、シートを得た。得られたシートについて、導電率及びゼーベック係数を測定し、それらの数値から出力因子を算出した。結果を表2に示す。
乾燥した単層カーボンナノチューブ(SWNT)(5mg)を、メチルイソブチルケトン(10mL)にホモジナイザー(IKAウルトラタックス社製、T25 デジタル)を用いて分散させた。
得られた分散液と、表1に示すフッ素ゴムを10質量%含むメチルイソブチルケトンの溶液とを、1:1の質量比で16時間混合した。
得られた液をシャーレにソルベントキャストし、80℃にて減圧乾燥して、シートを得た。得られたシートについて、導電率及びゼーベック係数を測定し、それらの数値から出力因子を算出した。結果を表2に示す。
11,13,21,23 電極
12,22 熱電変換素子
14,24 基材
Claims (6)
- カーボンナノチューブ及びフッ素ゴムを含むことを特徴とする熱電変換材料。
- フッ素ゴムに対して30〜90質量%のカーボンナノチューブを含む請求項1記載の熱電変換材料。
- 更に、溶媒を含む請求項1又は2記載の熱電変換材料。
- 請求項1、2又は3記載の熱電変換材料を含むことを特徴とする熱電変換素子。
- カーボンナノチューブがフッ素ゴム中に分散している請求項4記載の熱電変換素子。
- 基材と、前記基材上に設けられた請求項4又は5記載の熱電変換素子とを備えることを特徴とする熱電変換モジュール。
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JP2019078664A (ja) * | 2017-10-25 | 2019-05-23 | 国立研究開発法人産業技術総合研究所 | 蓄熱材の熱モニタリング方法及びこのための蓄熱材収容容器 |
Citations (4)
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WO2012121133A1 (ja) * | 2011-03-04 | 2012-09-13 | 独立行政法人産業技術総合研究所 | 熱電変換材料及び該材料を用いたフレキシブル熱電変換素子 |
WO2014152570A2 (en) * | 2013-03-14 | 2014-09-25 | Wake Forest University | Thermoelectric apparatus and articles and applications thereof |
JP2015050426A (ja) * | 2013-09-04 | 2015-03-16 | 富士フイルム株式会社 | 熱電変換素子 |
JP2015140400A (ja) * | 2014-01-29 | 2015-08-03 | ダイキン工業株式会社 | 導電性含フッ素ポリマー組成物 |
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WO2012121133A1 (ja) * | 2011-03-04 | 2012-09-13 | 独立行政法人産業技術総合研究所 | 熱電変換材料及び該材料を用いたフレキシブル熱電変換素子 |
WO2014152570A2 (en) * | 2013-03-14 | 2014-09-25 | Wake Forest University | Thermoelectric apparatus and articles and applications thereof |
JP2015050426A (ja) * | 2013-09-04 | 2015-03-16 | 富士フイルム株式会社 | 熱電変換素子 |
JP2015140400A (ja) * | 2014-01-29 | 2015-08-03 | ダイキン工業株式会社 | 導電性含フッ素ポリマー組成物 |
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JP2019078664A (ja) * | 2017-10-25 | 2019-05-23 | 国立研究開発法人産業技術総合研究所 | 蓄熱材の熱モニタリング方法及びこのための蓄熱材収容容器 |
JP6995345B2 (ja) | 2017-10-25 | 2022-02-04 | 国立研究開発法人産業技術総合研究所 | 蓄熱材の熱モニタリング方法及びこのための蓄熱材収容容器 |
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