A Novel Thermocell System Using Proton Solvation Entropy

Takashi Kobayashi, Teppei Yamada, Makoto Tadokoro, Nobuo Kimizuka

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    The entropy change associated with proton-coupled electron transfer (PCET) reactions significantly enhance the Seebeck coefficient (Se) of thermocells. A redox pair of [Ru(Hxim)6]2+/3+ (Him=imidazole, x=0≈1) releases three protons in their one-electron redox reactions in thermocells, which gave a remarkably high Se of −3.7 mV K−1 as confirmed by temperature-dependent square wave voltammetry. The value of Se is proportional to the redox reaction entropy (ΔSrc), which increased with the number of dissociating protons. This result demonstrates the utility of PCET reaction toward efficient thermoelectric conversion.

    Original languageEnglish
    Pages (from-to)4287-4290
    Number of pages4
    JournalChemistry - A European Journal
    Volume27
    Issue number13
    DOIs
    Publication statusPublished - Mar 1 2021

    All Science Journal Classification (ASJC) codes

    • Catalysis
    • Organic Chemistry

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