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

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

doi:10.1016/j.memsci.2015.10.042

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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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 language	English
Pages (from-to)	234-244
Number of pages	11
Journal	Journal of Membrane Science
Volume	499
DOIs	https://doi.org/10.1016/j.memsci.2015.10.042
Publication status	Published - 1 Feb 2016
MoE publication type	A1 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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title = "Thermal potential of ion-exchange membranes and its application to thermoelectric power generation",

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.",

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T1 - Thermal potential of ion-exchange membranes and its application to thermoelectric power generation

AU - Jokinen, Miikka

AU - Manzanares Andreu, Jose

AU - Kontturi, Kyösti

AU - Murtomäki, Lasse

PY - 2016/2/1

Y1 - 2016/2/1

N2 - 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.

AB - 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.

KW - Thermal membrane potential

KW - Ion-exchange membranes

KW - Thermoelectric power generation

KW - Non-isothermal electrodiffusion

KW - Ionic Seebeck coefficient

KW - Ionic heat of transport

KW - ELECTROLYTE-SOLUTIONS

KW - CHARGED MEMBRANES

KW - TEMPERATURE POLARIZATION

KW - NONISOTHERMAL SYSTEMS

KW - TRANSPORTED ENTROPY

KW - SORET COEFFICIENTS

KW - AQUEOUS-SOLUTIONS

KW - HALIDE SOLUTIONS

KW - SODIUM-CHLORIDE

KW - MASS-TRANSPORT

U2 - 10.1016/j.memsci.2015.10.042

DO - 10.1016/j.memsci.2015.10.042

M3 - Article

VL - 499

SP - 234

EP - 244

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -

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

Abstract

Keywords

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