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@ARTICLE{Liu:858451,
      author       = {Liu, Chang and Carmo, Marcelo and Bender, Guido and
                      Everwand, Andreas and Lickert, Thomas and Young, James L.
                      and Smolinka, Tom and Stolten, Detlef and Lehnert, Werner},
      title        = {{P}erformance enhancement of {PEM} electrolyzers through
                      iridium-coated titanium porous transport layers},
      journal      = {Electrochemistry communications},
      volume       = {97},
      issn         = {1388-2481},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2018-07329},
      pages        = {96 - 99},
      year         = {2018},
      abstract     = {Titanium-based porous transport layers (PTL) used in
                      polymer electrolyte membrane (PEM) water electrolyzers
                      suffer from surface passivation (titanium oxidation), which
                      increases the interface resistance between the PTL and
                      electrode. For long-term operation, PTLs are typically
                      coated with considerable amounts of platinum or gold to
                      ensure reasonable performance profiles over time. Moreover,
                      it is well known that the oxide forms of platinum and gold
                      are not stable under electrolysis conditions. In this study,
                      an easy and scalable method is introduced to protect the
                      titanium PTL from passivation by sputtering very thin layers
                      of iridium onto commercially-available titanium PTLs. The
                      iridium layer reduces the overall ohmic resistance of the
                      PTL/catalyst layer interface and improves the cell's
                      performance to that achieved with carbon-based PTLs. The
                      coating process homogeneously deposited iridium throughout
                      the inner structure of the PTL. The findings of this study
                      may lead to the use of iridium as a protective layer for
                      titanium PTLs, potentially enable operation at increased
                      cell voltages and lead to increased electrolyzer
                      durability.},
      cin          = {IEK-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-3-20101013},
      pnm          = {134 - Electrolysis and Hydrogen (POF3-134)},
      pid          = {G:(DE-HGF)POF3-134},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000451326800021},
      doi          = {10.1016/j.elecom.2018.10.021},
      url          = {https://juser.fz-juelich.de/record/858451},
}