A Novel Thermocell System Using Proton Solvation Entropy

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  • Takashi Kobayashi
    Division of Chemistry and Biochemistry Graduate School of Engineering Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
  • Teppei Yamada
    Department of Chemistry Graduate School of Science The University of Tokyo Hongo 7-3-1 Bunkyo-ku Tokyo 113-0033 Japan
  • Makoto Tadokoro
    Department of Chemistry Faculty of Science Tokyo University of Science Kagurazaka 1–3 Shinjuku-ku Tokyo 162-8601 Japan
  • Nobuo Kimizuka
    Division of Chemistry and Biochemistry Graduate School of Engineering Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan

書誌事項

公開日
2020-12-15
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#am
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/chem.202004562
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>The entropy change associated with proton‐coupled electron transfer (PCET) reactions significantly enhance the Seebeck coefficient (<jats:italic>S</jats:italic><jats:sub>e</jats:sub>) of thermocells. A redox pair of [Ru(H<jats:sub><jats:italic>x</jats:italic></jats:sub>im)<jats:sub>6</jats:sub>]<jats:sup>2+/3+</jats:sup> (Him=imidazole, <jats:italic>x=</jats:italic>0≈1) releases three protons in their one‐electron redox reactions in thermocells, which gave a remarkably high <jats:italic>S</jats:italic><jats:sub>e</jats:sub> of −3.7 mV K<jats:sup>−1</jats:sup> as confirmed by temperature‐dependent square wave voltammetry. The value of <jats:italic>S</jats:italic><jats:sub>e</jats:sub> is proportional to the redox reaction entropy (Δ<jats:italic>S</jats:italic><jats:sub>rc</jats:sub>), which increased with the number of dissociating protons. This result demonstrates the utility of PCET reaction toward efficient thermoelectric conversion.</jats:p>

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