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Construction of Chemically Crosslinked Sulfonated Poly(aryl ether ketone) Networks for Polymer Electrolyte Membranes.

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Title: Construction of Chemically Crosslinked Sulfonated Poly(aryl ether ketone) Networks for Polymer Electrolyte Membranes.
Authors: Liu, Zhenchao1 (AUTHOR), Liang, Bing1,2 (AUTHOR), Xie, Zizhen1 (AUTHOR), Hu, Wei2 (AUTHOR), Liu, Baijun1 (AUTHOR) liubj@jlu.edu.cn
Source: Energies (19961073). Jun2026, Vol. 19 Issue 12, p2801. 19p.
Subject Terms: *Crosslinking (Polymerization), *Proton exchange membrane fuel cells, *Proton conductivity, *Polymers, *Polymeric membranes, *Direct methanol fuel cells
Abstract: Polymer electrolyte membranes serving in proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) must possess sufficient mechanical–dimensional stability and excellent proton conducting capacity. Derived from the successful syntheses of two different sulfonated poly(aryl ether ketone)s bearing functional amine groups, two series of novel epoxy-crosslinked and silane-crosslinked sulfonated poly(aryl ether ketone) electrolyte networks are constructed for highly conductive and mechanically stable proton exchange membranes. The designed multi-component architecture, which integrates a moderate-ion-exchange-capacity sulfonated poly(aryl ether ketone) (moderate-IEC SPAEK), a high-IEC SPAEK, and a tailored crosslinker (epoxy or silane), enables a breakthrough in decoupling the traditional trade-off between conductivity and stability. The resulting membranes exhibit an outstanding combination of properties: exceptional proton conductivity exceeding 0.18 S cm−1 at 100 °C, tensile strength above 28.80 MPa, and enhanced chemical resistance, thermo-oxidative stability, and competitive direct methanol fuel cell performance. This work establishes a rational design strategy for crosslinked multi-component membranes as a promising platform for next-generation high-performance fuel cells. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194909250
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Construction of Chemically Crosslinked Sulfonated Poly(aryl ether ketone) Networks for Polymer Electrolyte Membranes.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Zhenchao%22">Liu, Zhenchao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liang%2C+Bing%22">Liang, Bing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Zizhen%22">Xie, Zizhen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Wei%22">Hu, Wei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Baijun%22">Liu, Baijun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liubj@jlu.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Jun2026, Vol. 19 Issue 12, p2801. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Crosslinking+%28Polymerization%29%22">Crosslinking (Polymerization)</searchLink><br />*<searchLink fieldCode="DE" term="%22Proton+exchange+membrane+fuel+cells%22">Proton exchange membrane fuel cells</searchLink><br />*<searchLink fieldCode="DE" term="%22Proton+conductivity%22">Proton conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br />*<searchLink fieldCode="DE" term="%22Polymeric+membranes%22">Polymeric membranes</searchLink><br />*<searchLink fieldCode="DE" term="%22Direct+methanol+fuel+cells%22">Direct methanol fuel cells</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Polymer electrolyte membranes serving in proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) must possess sufficient mechanical–dimensional stability and excellent proton conducting capacity. Derived from the successful syntheses of two different sulfonated poly(aryl ether ketone)s bearing functional amine groups, two series of novel epoxy-crosslinked and silane-crosslinked sulfonated poly(aryl ether ketone) electrolyte networks are constructed for highly conductive and mechanically stable proton exchange membranes. The designed multi-component architecture, which integrates a moderate-ion-exchange-capacity sulfonated poly(aryl ether ketone) (moderate-IEC SPAEK), a high-IEC SPAEK, and a tailored crosslinker (epoxy or silane), enables a breakthrough in decoupling the traditional trade-off between conductivity and stability. The resulting membranes exhibit an outstanding combination of properties: exceptional proton conductivity exceeding 0.18 S cm−1 at 100 °C, tensile strength above 28.80 MPa, and enhanced chemical resistance, thermo-oxidative stability, and competitive direct methanol fuel cell performance. This work establishes a rational design strategy for crosslinked multi-component membranes as a promising platform for next-generation high-performance fuel cells. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/en19122801
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 2801
    Subjects:
      – SubjectFull: Crosslinking (Polymerization)
        Type: general
      – SubjectFull: Proton exchange membrane fuel cells
        Type: general
      – SubjectFull: Proton conductivity
        Type: general
      – SubjectFull: Polymers
        Type: general
      – SubjectFull: Polymeric membranes
        Type: general
      – SubjectFull: Direct methanol fuel cells
        Type: general
    Titles:
      – TitleFull: Construction of Chemically Crosslinked Sulfonated Poly(aryl ether ketone) Networks for Polymer Electrolyte Membranes.
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            NameFull: Liu, Zhenchao
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            NameFull: Liang, Bing
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            NameFull: Xie, Zizhen
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            NameFull: Hu, Wei
      – PersonEntity:
          Name:
            NameFull: Liu, Baijun
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            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 19961073
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              Value: 19
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              Value: 12
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            – TitleFull: Energies (19961073)
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