Synthesis and characterization of quaternary ammonium functionalized fluorene-containing cardo polymers for potential anion exchange membrane water electrolyzer applications

Dongyang Chen, Michael Anthony Hickner, Shuanjin Wang, Jingjing Pan, Min Xiao, Yuezhong Meng

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Soluble quaternary ammonium functionalized poly(fluorenyl ether)s (PFEQAs) with a wide range of ion exchange capacities (IECs) were successfully synthesized from a novel tertiary amine group containing cardo monomer. Complete conversion of tertiary amine group to quaternary ammonium group was established, which enables precise control over IEC of the resultant polymers by adjusting monomer-loading ratio. The influence of IEC on the thermal stability, mechanical integrity, water uptake and ion conductivity of the PFEQAs were investigated. Furthermore, four counter ions were selected and their influences on the water uptake and ion conductivity of PFEQAs were studied in detail in order to give a comprehensive view of the transport properties of these anion exchange membranes. It was observed that the water uptakes of the membranes with different counter ions followed the trend: OH- > SO 4 2- > Cl- > I- while their ion conductivities followed another trend: OH- > SO4 2- > Cl- > I-. These membranes exhibited promising characteristics for anion exchange membrane water electrolyzers working with neutral PH water with or without supporting electrolytes.

Original languageEnglish (US)
Pages (from-to)16168-16176
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number21
DOIs
StatePublished - Nov 1 2012

Fingerprint

Ion exchange
Negative ions
anions
membranes
Membranes
polymers
Polymers
synthesis
Radiation counters
water
Water
ions
Amines
Ions
Monomers
conductivity
amines
counters
monomers
Transport properties

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Synthesis and characterization of quaternary ammonium functionalized fluorene-containing cardo polymers for potential anion exchange membrane water electrolyzer applications",
abstract = "Soluble quaternary ammonium functionalized poly(fluorenyl ether)s (PFEQAs) with a wide range of ion exchange capacities (IECs) were successfully synthesized from a novel tertiary amine group containing cardo monomer. Complete conversion of tertiary amine group to quaternary ammonium group was established, which enables precise control over IEC of the resultant polymers by adjusting monomer-loading ratio. The influence of IEC on the thermal stability, mechanical integrity, water uptake and ion conductivity of the PFEQAs were investigated. Furthermore, four counter ions were selected and their influences on the water uptake and ion conductivity of PFEQAs were studied in detail in order to give a comprehensive view of the transport properties of these anion exchange membranes. It was observed that the water uptakes of the membranes with different counter ions followed the trend: OH- > SO 4 2- > Cl- > I- while their ion conductivities followed another trend: OH- > SO4 2- > Cl- > I-. These membranes exhibited promising characteristics for anion exchange membrane water electrolyzers working with neutral PH water with or without supporting electrolytes.",
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Synthesis and characterization of quaternary ammonium functionalized fluorene-containing cardo polymers for potential anion exchange membrane water electrolyzer applications. / Chen, Dongyang; Hickner, Michael Anthony; Wang, Shuanjin; Pan, Jingjing; Xiao, Min; Meng, Yuezhong.

In: International Journal of Hydrogen Energy, Vol. 37, No. 21, 01.11.2012, p. 16168-16176.

Research output: Contribution to journalArticle

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