A Novel Thermocell System Using Proton Solvation Entropy

Takashi Kobayashi, Teppei Yamada, Makoto Tadokoro, Nobuo Kimizuka

Research output: Contribution to journalArticlepeer-review

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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