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@ARTICLE{Weber:906565,
      author       = {Weber, Felix M. and Kohlhaas, Ina and Figgemeier, Egbert},
      title        = {{L}ong-{T}erm {S}tability of {R}edox {M}ediators in
                      {C}arbonate {S}olvents},
      journal      = {Molecules},
      volume       = {27},
      number       = {5},
      issn         = {1420-3049},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2022-01525},
      pages        = {1737 -},
      year         = {2022},
      abstract     = {Scanning electrochemical microscopy (SECM) used in the
                      feedback mode is one of the most powerful versatile
                      analytical tools used in the field of battery research.
                      However, the application of SECM in the field of lithium-ion
                      batteries (LIBs) faces challenges associated with the
                      selection of a suitable redox mediator due to its high
                      reactivity at low potentials at lithium metal or lithiated
                      graphite electrodes. In this regard, the
                      electrochemical/chemical stability of
                      2,5-di-tert-butyl-1,4-dimethoxybenzene (DBDMB) is evaluated
                      and benchmarked with ferrocene. This investigation is
                      systematically carried out in both linear and cyclic
                      carbonates of the electrolyte recipe. Measurements of the
                      bulk current with a microelectrode prove that while DBDMB
                      decomposes in ethyl methyl carbonate (EMC)-containing
                      electrolyte, bulk current remains stable in cyclic
                      carbonates, ethylene carbonate (EC) and propylene carbonate
                      (PC). Ferrocene was studied as an alternative redox
                      mediator, showing superior electrochemical performance in
                      ethyl methyl carbonate-containing electrolytes in terms of
                      degradation. The resulting robustness of ferrocene with SECM
                      is essential for a quantitative analysis of battery
                      materials over extended periods. SECM approach curves depict
                      practical problems when using the decomposing DBDMB for data
                      acquisition and interpretation. This study sheds light
                      towards the use of SECM as a probing tool enabled by redox
                      mediators},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1222 - Components and Cells (POF4-122) / Lillint -
                      Thermodynamic and kinetic stability of the Lithium-Liquid
                      Electrolyte Interface (13XP0225B)},
      pid          = {G:(DE-HGF)POF4-1222 / G:(BMBF)13XP0225B},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {35268838},
      UT           = {WOS:000769309200001},
      doi          = {10.3390/molecules27051737},
      url          = {https://juser.fz-juelich.de/record/906565},
}