The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications

Zbyslaw Owczarczyk; Hai Long; Bryan Pivovar; Ashutosh Divekar; Mei-Chen Kuo; Andrew Motz; Zachary Page-Belknap; Soenke Seifert; Christopher Maupin; Michael Yandrasits; Yuan Yang; Andrew Herring; Andrew Park

doi:10.1002/polb.24825

The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications

Zbyslaw Owczarczyk, Hai Long, Bryan Pivovar, Ashutosh Divekar, Mei-Chen Kuo, Andrew Motz, Zachary Page-Belknap, Soenke Seifert, Christopher Maupin, Michael Yandrasits, Yuan Yang, Andrew Herring, Andrew Park

Research output: Contribution to journal › Article › peer-review

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Abstract

Three different perfluorinated type polymers as anion exchange membranes for electrochemical applications were studied. They have a sulfonamide linkage to a spacer methylene chain attached to a tri-methyl ammonium cation, specifically using a three carbon spacer chain (PFAEM_H_C3), and methylated imide polymers with three (PFAEM_CH3_C3) and six carbon spacer chain (PFAEM_CH3_C6). There are significant number of zwitterionic side chains in the PFAEM_H_C3 polymer and very few in the PFAEM_CH3_C3 or the PFAEM_CH3_C6 polymer. They have similar halide conductivity, but the PFAEM_CH3_C6 showed highest OH ⁻ conductivity, 122 mS cm ⁻¹ at 80 °C and 95% RH. The larger spacer chain polymer, PFAEM_CH3_C6 has a higher water uptake value (λ = 9) compared to PFAEM_CH3_C3(λ = 7) at 60 °C and 95% RH in the Cl ⁻ form. Therefore, it has a larger domain spacing of 4.9 nm versus 4.1 nm from small angle X-ray scattering data. The polymer was characterized by FTIR and DFT was used to fully assign the spectra.

Original language	American English
Pages (from-to)	700-712
Number of pages	13
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	57
Issue number	11
DOIs	https://doi.org/10.1002/polb.24825 https://doi.org/10.1002/polb.24825
State	Published - 2019

Bibliographical note

Publisher Copyright:
© 2019 Wiley Periodicals, Inc.

NREL Publication Number

NREL/JA-5900-73836

Keywords

anion exchange membranes
electrochemical applications
electrochemistry
fuel cells
perfluorinated AEMs
polyelectrolytes
polytetrafluoroethylene

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Owczarczyk, Z., Long, H., Pivovar, B., Divekar, A., Kuo, M.-C., Motz, A., Page-Belknap, Z., Seifert, S., Maupin, C., Yandrasits, M., Yang, Y., Herring, A., & Park, A. (2019). The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications. Journal of Polymer Science, Part B: Polymer Physics, 57(11), 700-712. https://doi.org/10.1002/polb.24825, https://doi.org/10.1002/polb.24825

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title = "The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications",

abstract = " Three different perfluorinated type polymers as anion exchange membranes for electrochemical applications were studied. They have a sulfonamide linkage to a spacer methylene chain attached to a tri-methyl ammonium cation, specifically using a three carbon spacer chain (PFAEM_H_C3), and methylated imide polymers with three (PFAEM_CH3_C3) and six carbon spacer chain (PFAEM_CH3_C6). There are significant number of zwitterionic side chains in the PFAEM_H_C3 polymer and very few in the PFAEM_CH3_C3 or the PFAEM_CH3_C6 polymer. They have similar halide conductivity, but the PFAEM_CH3_C6 showed highest OH − conductivity, 122 mS cm −1 at 80 °C and 95% RH. The larger spacer chain polymer, PFAEM_CH3_C6 has a higher water uptake value (λ = 9) compared to PFAEM_CH3_C3(λ = 7) at 60 °C and 95% RH in the Cl − form. Therefore, it has a larger domain spacing of 4.9 nm versus 4.1 nm from small angle X-ray scattering data. The polymer was characterized by FTIR and DFT was used to fully assign the spectra.",

keywords = "anion exchange membranes, electrochemical applications, electrochemistry, fuel cells, perfluorinated AEMs, polyelectrolytes, polytetrafluoroethylene",

author = "Zbyslaw Owczarczyk and Hai Long and Bryan Pivovar and Ashutosh Divekar and Mei-Chen Kuo and Andrew Motz and Zachary Page-Belknap and Soenke Seifert and Christopher Maupin and Michael Yandrasits and Yuan Yang and Andrew Herring and Andrew Park",

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year = "2019",

doi = "10.1002/polb.24825",

language = "American English",

volume = "57",

pages = "700--712",

journal = "Journal of Polymer Science, Part B: Polymer Physics",

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Owczarczyk, Z , Long, H , Pivovar, B, Divekar, A, Kuo, M-C, Motz, A, Page-Belknap, Z, Seifert, S, Maupin, C, Yandrasits, M, Yang, Y, Herring, A & Park, A 2019, 'The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications', Journal of Polymer Science, Part B: Polymer Physics, vol. 57, no. 11, pp. 700-712. https://doi.org/10.1002/polb.24825, https://doi.org/10.1002/polb.24825

TY - JOUR

T1 - The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications

AU - Owczarczyk, Zbyslaw

AU - Long, Hai

AU - Pivovar, Bryan

AU - Divekar, Ashutosh

AU - Kuo, Mei-Chen

AU - Motz, Andrew

AU - Page-Belknap, Zachary

AU - Seifert, Soenke

AU - Maupin, Christopher

AU - Yandrasits, Michael

AU - Yang, Yuan

AU - Herring, Andrew

AU - Park, Andrew

PY - 2019

Y1 - 2019

N2 - Three different perfluorinated type polymers as anion exchange membranes for electrochemical applications were studied. They have a sulfonamide linkage to a spacer methylene chain attached to a tri-methyl ammonium cation, specifically using a three carbon spacer chain (PFAEM_H_C3), and methylated imide polymers with three (PFAEM_CH3_C3) and six carbon spacer chain (PFAEM_CH3_C6). There are significant number of zwitterionic side chains in the PFAEM_H_C3 polymer and very few in the PFAEM_CH3_C3 or the PFAEM_CH3_C6 polymer. They have similar halide conductivity, but the PFAEM_CH3_C6 showed highest OH − conductivity, 122 mS cm −1 at 80 °C and 95% RH. The larger spacer chain polymer, PFAEM_CH3_C6 has a higher water uptake value (λ = 9) compared to PFAEM_CH3_C3(λ = 7) at 60 °C and 95% RH in the Cl − form. Therefore, it has a larger domain spacing of 4.9 nm versus 4.1 nm from small angle X-ray scattering data. The polymer was characterized by FTIR and DFT was used to fully assign the spectra.

AB - Three different perfluorinated type polymers as anion exchange membranes for electrochemical applications were studied. They have a sulfonamide linkage to a spacer methylene chain attached to a tri-methyl ammonium cation, specifically using a three carbon spacer chain (PFAEM_H_C3), and methylated imide polymers with three (PFAEM_CH3_C3) and six carbon spacer chain (PFAEM_CH3_C6). There are significant number of zwitterionic side chains in the PFAEM_H_C3 polymer and very few in the PFAEM_CH3_C3 or the PFAEM_CH3_C6 polymer. They have similar halide conductivity, but the PFAEM_CH3_C6 showed highest OH − conductivity, 122 mS cm −1 at 80 °C and 95% RH. The larger spacer chain polymer, PFAEM_CH3_C6 has a higher water uptake value (λ = 9) compared to PFAEM_CH3_C3(λ = 7) at 60 °C and 95% RH in the Cl − form. Therefore, it has a larger domain spacing of 4.9 nm versus 4.1 nm from small angle X-ray scattering data. The polymer was characterized by FTIR and DFT was used to fully assign the spectra.

KW - anion exchange membranes

KW - electrochemical applications

KW - electrochemistry

KW - fuel cells

KW - perfluorinated AEMs

KW - polyelectrolytes

KW - polytetrafluoroethylene

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U2 - 10.1002/polb.24825

DO - 10.1002/polb.24825

M3 - Article

AN - SCOPUS:85063872447

SN - 0887-6266

VL - 57

SP - 700

EP - 712

JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

IS - 11

ER -

The Impact of Alkyl Tri-Methyl Ammonium Side Chains on Perfluorinated Ionic Membranes for Electrochemical Applications

Abstract

Bibliographical note

NREL Publication Number

Keywords

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