High Performance Anion Exchange Membrane Fuel Cells Enabled by Fluoropoly(olefin) Membranes

Liang Zhu, Xiong Peng, Shunli Shang, Michael T. Kwasny, Tawanda Zimudzi, Xuedi Yu, Nayan Saikia, Jing Pan, Zi-kui Liu, Gregory N. Tew, William E. Mustain, Michael Yandrasits, Michael Anthony Hickner

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Although the peak power density of anion exchange membrane fuel cells (AEMFCs) has been raised from ≈0.1 to ≈1.4 W cm−2 over the last decade, a majority of AEMFCs reported in the literature have not been demonstrated to achieve consistently high performance and steady-state operation. Poly(olefin)-based AEMs with fluorine substitution on the aromatic comonomer show considerably higher dimensional stability compared to samples that do not contain fluorine. More importantly, fluorinated poly(olefin)-based AEMs exhibit high hydroxide conductivity without excessive hydration due to a new proposed mechanism where the fluorinated dipolar monomer facilitates increased hydroxide dissociation and transport. Using this new generation of AEMs, a stable, high-performance AEMFC is operated for 120 h. When the fuel cell configuration is subjected to a constant current density of 600 mA cm−2 under H2/O2 flow, the cell voltage declines only 11% (from 0.75 to 0.67 V) for the first 20 h during break-in and the cell voltage loss is low (0.2 mV h−1) over the subsequent 100 h of cell testing. The ease of synthesis, potential for low-cost commercialization, and remarkable ex situ properties and in situ performance of fluoropoly(olefin)-based AEM renders this material a benchmark membrane for practical AEMFC applications.

Original languageEnglish (US)
Article number1902059
JournalAdvanced Functional Materials
Volume29
Issue number26
DOIs
StatePublished - Jun 27 2019

Fingerprint

Alkenes
alkenes
Olefins
fuel cells
Anions
Fuel cells
Ion exchange
Negative ions
anions
membranes
Membranes
Fluorine
hydroxides
fluorine
cells
dimensional stability
commercialization
Dimensional stability
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Zhu, Liang ; Peng, Xiong ; Shang, Shunli ; Kwasny, Michael T. ; Zimudzi, Tawanda ; Yu, Xuedi ; Saikia, Nayan ; Pan, Jing ; Liu, Zi-kui ; Tew, Gregory N. ; Mustain, William E. ; Yandrasits, Michael ; Hickner, Michael Anthony. / High Performance Anion Exchange Membrane Fuel Cells Enabled by Fluoropoly(olefin) Membranes. In: Advanced Functional Materials. 2019 ; Vol. 29, No. 26.
@article{144a8b53910e472791874c6445f7b6d6,
title = "High Performance Anion Exchange Membrane Fuel Cells Enabled by Fluoropoly(olefin) Membranes",
abstract = "Although the peak power density of anion exchange membrane fuel cells (AEMFCs) has been raised from ≈0.1 to ≈1.4 W cm−2 over the last decade, a majority of AEMFCs reported in the literature have not been demonstrated to achieve consistently high performance and steady-state operation. Poly(olefin)-based AEMs with fluorine substitution on the aromatic comonomer show considerably higher dimensional stability compared to samples that do not contain fluorine. More importantly, fluorinated poly(olefin)-based AEMs exhibit high hydroxide conductivity without excessive hydration due to a new proposed mechanism where the fluorinated dipolar monomer facilitates increased hydroxide dissociation and transport. Using this new generation of AEMs, a stable, high-performance AEMFC is operated for 120 h. When the fuel cell configuration is subjected to a constant current density of 600 mA cm−2 under H2/O2 flow, the cell voltage declines only 11{\%} (from 0.75 to 0.67 V) for the first 20 h during break-in and the cell voltage loss is low (0.2 mV h−1) over the subsequent 100 h of cell testing. The ease of synthesis, potential for low-cost commercialization, and remarkable ex situ properties and in situ performance of fluoropoly(olefin)-based AEM renders this material a benchmark membrane for practical AEMFC applications.",
author = "Liang Zhu and Xiong Peng and Shunli Shang and Kwasny, {Michael T.} and Tawanda Zimudzi and Xuedi Yu and Nayan Saikia and Jing Pan and Zi-kui Liu and Tew, {Gregory N.} and Mustain, {William E.} and Michael Yandrasits and Hickner, {Michael Anthony}",
year = "2019",
month = "6",
day = "27",
doi = "10.1002/adfm.201902059",
language = "English (US)",
volume = "29",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",
number = "26",

}

High Performance Anion Exchange Membrane Fuel Cells Enabled by Fluoropoly(olefin) Membranes. / Zhu, Liang; Peng, Xiong; Shang, Shunli; Kwasny, Michael T.; Zimudzi, Tawanda; Yu, Xuedi; Saikia, Nayan; Pan, Jing; Liu, Zi-kui; Tew, Gregory N.; Mustain, William E.; Yandrasits, Michael; Hickner, Michael Anthony.

In: Advanced Functional Materials, Vol. 29, No. 26, 1902059, 27.06.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High Performance Anion Exchange Membrane Fuel Cells Enabled by Fluoropoly(olefin) Membranes

AU - Zhu, Liang

AU - Peng, Xiong

AU - Shang, Shunli

AU - Kwasny, Michael T.

AU - Zimudzi, Tawanda

AU - Yu, Xuedi

AU - Saikia, Nayan

AU - Pan, Jing

AU - Liu, Zi-kui

AU - Tew, Gregory N.

AU - Mustain, William E.

AU - Yandrasits, Michael

AU - Hickner, Michael Anthony

PY - 2019/6/27

Y1 - 2019/6/27

N2 - Although the peak power density of anion exchange membrane fuel cells (AEMFCs) has been raised from ≈0.1 to ≈1.4 W cm−2 over the last decade, a majority of AEMFCs reported in the literature have not been demonstrated to achieve consistently high performance and steady-state operation. Poly(olefin)-based AEMs with fluorine substitution on the aromatic comonomer show considerably higher dimensional stability compared to samples that do not contain fluorine. More importantly, fluorinated poly(olefin)-based AEMs exhibit high hydroxide conductivity without excessive hydration due to a new proposed mechanism where the fluorinated dipolar monomer facilitates increased hydroxide dissociation and transport. Using this new generation of AEMs, a stable, high-performance AEMFC is operated for 120 h. When the fuel cell configuration is subjected to a constant current density of 600 mA cm−2 under H2/O2 flow, the cell voltage declines only 11% (from 0.75 to 0.67 V) for the first 20 h during break-in and the cell voltage loss is low (0.2 mV h−1) over the subsequent 100 h of cell testing. The ease of synthesis, potential for low-cost commercialization, and remarkable ex situ properties and in situ performance of fluoropoly(olefin)-based AEM renders this material a benchmark membrane for practical AEMFC applications.

AB - Although the peak power density of anion exchange membrane fuel cells (AEMFCs) has been raised from ≈0.1 to ≈1.4 W cm−2 over the last decade, a majority of AEMFCs reported in the literature have not been demonstrated to achieve consistently high performance and steady-state operation. Poly(olefin)-based AEMs with fluorine substitution on the aromatic comonomer show considerably higher dimensional stability compared to samples that do not contain fluorine. More importantly, fluorinated poly(olefin)-based AEMs exhibit high hydroxide conductivity without excessive hydration due to a new proposed mechanism where the fluorinated dipolar monomer facilitates increased hydroxide dissociation and transport. Using this new generation of AEMs, a stable, high-performance AEMFC is operated for 120 h. When the fuel cell configuration is subjected to a constant current density of 600 mA cm−2 under H2/O2 flow, the cell voltage declines only 11% (from 0.75 to 0.67 V) for the first 20 h during break-in and the cell voltage loss is low (0.2 mV h−1) over the subsequent 100 h of cell testing. The ease of synthesis, potential for low-cost commercialization, and remarkable ex situ properties and in situ performance of fluoropoly(olefin)-based AEM renders this material a benchmark membrane for practical AEMFC applications.

UR - http://www.scopus.com/inward/record.url?scp=85066091335&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066091335&partnerID=8YFLogxK

U2 - 10.1002/adfm.201902059

DO - 10.1002/adfm.201902059

M3 - Article

AN - SCOPUS:85066091335

VL - 29

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

IS - 26

M1 - 1902059

ER -