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@ARTICLE{Buchheit:889278,
      author       = {Buchheit, Annika and Hoffmeyer, Marija and Teßmer, Britta
                      and Neuhaus, Kerstin},
      title        = {{C}haracterization of the {P}article-{P}olymer {I}nterface
                      in {D}ual-{P}hase {E}lectrolytes by {K}elvin {P}robe {F}orce
                      {M}icroscopy},
      journal      = {Journal of the Electrochemical Society},
      volume       = {168},
      number       = {1},
      issn         = {1945-7111},
      address      = {Bristol},
      publisher    = {IOP Publishing},
      reportid     = {FZJ-2021-00183},
      pages        = {010531},
      year         = {2021},
      abstract     = {In this study, the possibility to characterize the
                      electrochemical characteristics of the particle-polymer
                      interface in dual-phase electrolytes by measuring the
                      contact potential difference with high local resolution is
                      demonstrated. Two different polymer electrolytes,
                      polyethylene oxide (PEO) and
                      poly[bis-2-(2-methoxyethoxy)-ethoxyphosphazene] (MEEP), were
                      investigated in combination with lithium ion conductive
                      Li7La3Zr2O12 (LLZ) particles and two different mixed
                      ionic-electronic conductive ceramic particles: uncoated and
                      carbon coated LiFePO4 (LFP) as typical cathode material and
                      uncoated Li4Ti5O12 as typical anode material. A distinct
                      Volta potential gradient between the particles and the
                      polymer was observable in all cases, except when no lithium
                      salt was present within the polymer matrix. The measured
                      potential gradients can be explained in terms of a contact
                      potential between the polymer electrolyte and the ceramic
                      electrolyte. A more negatively charged space charge layer
                      around LFP particles in PEO matrix and around LLZ particles
                      in MEEP can be explained by enrichment of salt anions in
                      direct vicinity of the particle.Electrochemical
                      characterization with impedance spectroscopy showed an
                      increased conductivity for addition of LFP for PEO while the
                      addition of various particles in different concentrations
                      showed no effect on the conductivity of MEEP. The lithium
                      transference number was unaffected by particle addition for
                      all samples.},
      cin          = {IEK-12},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131) / 1221 -
                      Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000612842100001},
      doi          = {10.1149/1945-7111/abda59},
      url          = {https://juser.fz-juelich.de/record/889278},
}