Converting Heat to Electrical Energy Using Highly Charged Polyoxometalate ElectrolytesClick to copy article linkArticle link copied!
- Erik Svensson GrapeErik Svensson GrapeDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesMore by Erik Svensson Grape
- Jiawei HuangJiawei HuangDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesOregon Center for Electrochemistry, University of Oregon, Eugene, Oregon 97403, United StatesMore by Jiawei Huang
- Dwaipayan RoychowdhuryDwaipayan RoychowdhuryDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesOregon Center for Electrochemistry, University of Oregon, Eugene, Oregon 97403, United StatesMore by Dwaipayan Roychowdhury
- Tekalign T. DebelaTekalign T. DebelaDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesMore by Tekalign T. Debela
- Haeun ChangHaeun ChangDepartment of Chemistry and Biochemistry, University of California, San Diego, California 92093, United StatesMore by Haeun Chang
- Andrew JenkinsAndrew JenkinsDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesMore by Andrew Jenkins
- Alina M. SchimpfAlina M. SchimpfDepartment of Chemistry and Biochemistry, University of California, San Diego, California 92093, United StatesProgram in Materials Science and Engineering, University of California, San Diego, California 92093, United StatesMore by Alina M. Schimpf
- Christopher H. HendonChristopher H. HendonDepartment of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesOregon Center for Electrochemistry, University of Oregon, Eugene, Oregon 97403, United StatesMore by Christopher H. Hendon
- Carl K. Brozek*Carl K. Brozek*Email: [email protected]Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United StatesOregon Center for Electrochemistry, University of Oregon, Eugene, Oregon 97403, United StatesMore by Carl K. Brozek
Abstract
Thermally regenerative electrochemical cycles and thermogalvanic cells harness redox entropy changes (ΔSrc) to interconvert heat and electricity with applications in heat harvesting and energy storage. Their efficiencies depend on ΔSrc because it relates directly to the Seebeck coefficient, yet few approaches exist for controlling the reaction entropy. Here, we demonstrate the design principle of using highly charged molecular species as electrolytes in thermogalvanic devices. As a proof-of-concept, the highly charged Wells-Dawson ion [P2W18O62]6– exhibits a large ΔSrc (−195 J mol–1 K–1) and a Seebeck coefficient comparable to state-of-the-art electrolytes (−1.7 mV K–1), demonstrating the potential of linking the rich chemistry of polyoxometalates to thermogalvanic technologies.
Cited By
This article is cited by 2 publications.
- Mamta Dagar, Anyesh De, Zhou Lu, Ellen M. Matson, Agnes E. Thorarinsdottir. Implications of Charge and Heteroatom Dopants on the Thermodynamics and Kinetics of Redox Reactions in Keggin-Type Polyoxometalates. ACS Materials Au 2025, 5
(1)
, 200-210. https://doi.org/10.1021/acsmaterialsau.4c00136
- Ashley N. Mapile, Erik Svensson Grape, Carl K. Brozek. Solvation of Nanoscale Materials. Chemistry of Materials 2024, 36
(19)
, 9075-9088. https://doi.org/10.1021/acs.chemmater.4c01518
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