DataVXACS Applied Energy MaterialsPaper
journal article·2024-12-23

Converting Heat to Electrical Energy Using Highly Charged Polyoxometalate Electrolytes

Erik Svensson Grape, Jiawei Huang, Dwaipayan Roychowdhury, Tekalign T. Debela, Haeun Chang, Andrew Jenkins, Alina M. Schimpf, Christopher H. Hendon, Carl K. Brozek

ACS Applied Energy Materials· Volume 7· Issue 24
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Source abstract

Abstract

Thermally regenerative electrochemical cycles and thermogalvanic cells harness redox entropy changes (Δ S rc ) to interconvert heat and electricity with applications in heat harvesting and energy storage. Their efficiencies depend on Δ S rc 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 [P 2 W 18 O 62 ] 6– exhibits a large Δ S rc (−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.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Polyoxometalates: Synthesis and Applications · Metal-Organic Frameworks: Synthesis and Applications · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon, Eugene, Oregon 97403, United States

Oregon Center for Electrochemistry, University of Oregon, Eugene, Oregon 97403, United States

Department of Chemistry and Biochemistry, University of California, San Diego, California 92093, United States

Program in Materials Science and Engineering, University of California, San Diego, California 92093, United States

Funding

Vetenskapsr?det · Basic Energy Sciences · Research Corporation for Science Advancement · Camille and Henry Dreyfus Foundation · Division of Materials Research

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