Improved electrical power production of thermally regenerative batteries using a poly(phenylene oxide) based anion exchange membrane

Mohammad Rahimi, Liang Zhu, Kelly L. Kowalski, Xiuping Zhu, Christopher Aaron Gorski, Michael Anthony Hickner, Bruce Ernest Logan

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Thermally regenerative ammonia-based batteries (TRABs) can be used to harvest low-grade waste heat as electrical power. To improve TRAB performance, a series of benzyltrimethyl quaternary ammonium-functionalized poly(phenylene oxide) anion exchange membranes (BTMA-AEMs) were examined for their impact on performance relative to a commercial AEM (Selemion AMV). The synthesized AEMs had different degrees of functionalization (DF; 25% and 40%), and thicknesses (50, 100 and 150 μm). Power and energy densities were shown to be a function of both DF and membrane thickness. The power density of TRAB increased by 31% using a BTMA-AEM (40% DF, 50 μm thick; 106 ± 7 W m−2) compared to the Selemion (81 ± 5 W m−2). Moreover, the energy density increased by 13% when using a BTMA-based membrane (25% DF, 150 μm thick; 350 Wh m−3) compared to the Selemion membrane (311 Wh m−3). The thermal-electric conversion efficiency improved to 0.97% with the new membrane compared to 0.86% for the Selemion. This energy recovery was 7.0% relative to the Carnot efficiency, which was 1.8 times greater than the highest previously reported value of a system used to capture low-grade waste heat as electricity.

Original languageEnglish (US)
Pages (from-to)956-963
Number of pages8
JournalJournal of Power Sources
Volume342
DOIs
StatePublished - Jan 1 2017

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deuterium fluorides
Oxides
Anions
electric batteries
Ion exchange
Negative ions
anions
membranes
Membranes
Ammonia
oxides
ammonia
waste heat
Waste heat
radiant flux density
grade
flux density
electricity
Ammonium Compounds
Conversion efficiency

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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title = "Improved electrical power production of thermally regenerative batteries using a poly(phenylene oxide) based anion exchange membrane",
abstract = "Thermally regenerative ammonia-based batteries (TRABs) can be used to harvest low-grade waste heat as electrical power. To improve TRAB performance, a series of benzyltrimethyl quaternary ammonium-functionalized poly(phenylene oxide) anion exchange membranes (BTMA-AEMs) were examined for their impact on performance relative to a commercial AEM (Selemion AMV). The synthesized AEMs had different degrees of functionalization (DF; 25{\%} and 40{\%}), and thicknesses (50, 100 and 150 μm). Power and energy densities were shown to be a function of both DF and membrane thickness. The power density of TRAB increased by 31{\%} using a BTMA-AEM (40{\%} DF, 50 μm thick; 106 ± 7 W m−2) compared to the Selemion (81 ± 5 W m−2). Moreover, the energy density increased by 13{\%} when using a BTMA-based membrane (25{\%} DF, 150 μm thick; 350 Wh m−3) compared to the Selemion membrane (311 Wh m−3). The thermal-electric conversion efficiency improved to 0.97{\%} with the new membrane compared to 0.86{\%} for the Selemion. This energy recovery was 7.0{\%} relative to the Carnot efficiency, which was 1.8 times greater than the highest previously reported value of a system used to capture low-grade waste heat as electricity.",
author = "Mohammad Rahimi and Liang Zhu and Kowalski, {Kelly L.} and Xiuping Zhu and Gorski, {Christopher Aaron} and Hickner, {Michael Anthony} and Logan, {Bruce Ernest}",
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Improved electrical power production of thermally regenerative batteries using a poly(phenylene oxide) based anion exchange membrane. / Rahimi, Mohammad; Zhu, Liang; Kowalski, Kelly L.; Zhu, Xiuping; Gorski, Christopher Aaron; Hickner, Michael Anthony; Logan, Bruce Ernest.

In: Journal of Power Sources, Vol. 342, 01.01.2017, p. 956-963.

Research output: Contribution to journalArticle

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AU - Hickner, Michael Anthony

AU - Logan, Bruce Ernest

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