Thermal potential of ion-exchange membranes and its application to thermoelectric power generation

Miikka Jokinen, Jose Manzanares Andreu, Kyösti Kontturi, Lasse Murtomäki

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    11 Citations (Scopus)
    157 Downloads (Pure)

    Abstract

    The low efficiency and high price of thermoelectric semiconductors has generated interest in unconventional forms of thermoelectric materials. In this article, ionic thermoelectricity has been studied with commercial ion-exchange membranes for different aqueous 1:1 electrolytes. The theory of thermal membrane potential has been derived taking into account the ionic heats of transport, the non-isothermal Donnan potentials, the temperature polarization, and the thermally-induced concentration polarization of the electrolyte. Also the generated thermoelectric power has been experimentally studied. The experiments show good agreement with the theory, and suggest ways for systematic improvement of the system performance. (C) 2015 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)234-244
    Number of pages11
    JournalJournal of Membrane Science
    Volume499
    DOIs
    Publication statusPublished - 1 Feb 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Thermal membrane potential
    • Ion-exchange membranes
    • Thermoelectric power generation
    • Non-isothermal electrodiffusion
    • Ionic Seebeck coefficient
    • Ionic heat of transport
    • ELECTROLYTE-SOLUTIONS
    • CHARGED MEMBRANES
    • TEMPERATURE POLARIZATION
    • NONISOTHERMAL SYSTEMS
    • TRANSPORTED ENTROPY
    • SORET COEFFICIENTS
    • AQUEOUS-SOLUTIONS
    • HALIDE SOLUTIONS
    • SODIUM-CHLORIDE
    • MASS-TRANSPORT

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