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@ARTICLE{Geier:840329,
      author       = {Geier, Sebastian and Jung, Roland and Peters, Kristina and
                      Gasteiger, Hubert A. and Fattakhova-Rohlfing, Dina and
                      Fässler, Thomas F.},
      title        = {{A} wet-chemical route for macroporous inverse opal {G}e
                      anodes for lithium ion batteries with high capacity
                      retention},
      journal      = {Sustainable energy $\&$ fuels},
      volume       = {2},
      issn         = {2398-4902},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry},
      reportid     = {FZJ-2017-07871},
      pages        = {85-90},
      year         = {2018},
      abstract     = {Germanium holds great potential as an anode material for
                      lithium ion batteries due to its high specific capacity and
                      its favorable properties such as good lithium ion
                      diffusivity and electronic conductivity. However, the high
                      cost of germanium and large volume changes during cycling,
                      which lead to a rapid capacity fading for bulk Ge materials,
                      demand for nanostructured thin film devices. Herein we
                      report the preparation and electrochemical properties of
                      thin films of porous, inverse opal structured Ge anodes
                      obtained via a simple, up-scalable wet-chemical route
                      utilizing [Ge9]4− Zintl ions. In the absence of conductive
                      additives, they show high initial capacities of >1300 mA h
                      g−1 and promisingly high coulombic efficiencies of up to
                      $99.3\%$ and deliver over $73\%$ of their initial capacity
                      after 100 cycles when cycled vs. metallic lithium. In
                      contrast to many other porous structured Ge electrodes, they
                      show very little to almost no capacity fading after an
                      initial drop, which makes them promising candidates for long
                      life applications.},
      cin          = {IEK-1},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000424001700007},
      doi          = {10.1039/C7SE00422B},
      url          = {https://juser.fz-juelich.de/record/840329},
}