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@ARTICLE{Reshetenko:903869,
      author       = {Reshetenko, Tatyana V. and Kulikovsky, Andrei},
      title        = {{I}mpedance {S}pectroscopy {M}easurements of {I}onomer
                      {F}ilm {O}xygen {T}ransport {R}esistivity in {O}perating
                      {L}ow-{P}t {PEM} {F}uel {C}ell},
      journal      = {Membranes},
      volume       = {11},
      number       = {12},
      issn         = {2077-0375},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2021-05502},
      pages        = {985 -},
      year         = {2021},
      abstract     = {The work presents a model for local impedance of low-Pt
                      proton exchange membrane fuel cells (PEMFCs), including
                      cathode pore size distribution and O2 transport along pores
                      and through a thin ionomer film covering Pt/C agglomerates.
                      The model was applied to fit the local impedance spectra of
                      low-Pt fuel cells operated at current densities from 100 to
                      800 mA cm−2 and recorded by a segmented cell system.
                      Assuming an ionomer film thickness of 10 nm, the fitting
                      returned the product of the dimensionless Henry’s constant
                      of oxygen dissolution in ionomer KH by the oxygen
                      diffusivity DN in the ionomer (KHDN). This parameter allowed
                      us to determine the fundamental O2 transport resistivity RN
                      through the ionomer film in the working electrode under
                      conditions relevant to the realistic operation of PEMFCs.
                      The results show that variation of the operating current
                      density does not affect RN, which remains nearly constant at
                      ≃0.4 s cm−1.},
      cin          = {IEK-13},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IEK-13-20190226},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34940486},
      UT           = {WOS:000736330600001},
      doi          = {10.3390/membranes11120985},
      url          = {https://juser.fz-juelich.de/record/903869},
}