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@ARTICLE{Zoller:877276,
      author       = {Zoller, Florian and Böhm, Daniel and Luxa, Jan and
                      Döblinger, Markus and Sofer, Zdenek and Semenenko, Dmitri
                      A. and Bein, Thomas and Fattakhova, Dina},
      title        = {{F}reestanding {L}i{F}e0. 2{M}n0. 8{PO}4/r{GO}
                      nanocomposites as high energy density fast charging cathodes
                      for lithium-ion batteries},
      journal      = {Materials today},
      volume       = {16},
      issn         = {2468-6069},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Ltd.},
      reportid     = {FZJ-2020-02099},
      pages        = {100416},
      year         = {2020},
      abstract     = {Freestanding electrodes for lithium ion batteries are
                      considered as a promising option to increase the total
                      gravimetric energy density of the cells due to a decreased
                      weight of electrochemically inactive materials. We report a
                      simple procedure for the fabrication of freestanding
                      LiFe0.2Mn0.8PO4 (LFMP)/rGO electrodes with a very high
                      loading of active material of 83 $wt\%,$ high total loading
                      of up to 8 mg cm−2, high energy density, excellent cycling
                      stability and at the same time very fast charging rate, with
                      a total performance significantly exceeding the values
                      reported in the literature. The keys to the improved
                      electrode performance are optimization of LFMP nanoparticles
                      via nanoscaling and doping; the use of graphene oxide (GO)
                      with its high concentration of surface functional groups
                      favoring the adhesion of high amounts of LFMP nanoparticles,
                      and freeze-casting of the GO-based nanocomposites to prevent
                      the morphology collapse and provide a unique fluffy open
                      microstructure of the freestanding electrodes. The rate and
                      the cycling performance of the obtained freestanding
                      electrodes are superior compared to their Al-foil coated
                      equivalents, especially when calculated for the entire
                      weight of the electrode, due to the extremely reduced
                      content of electrochemically inactive material (17 $wt\%$ of
                      electrochemically inactive material in case of the
                      freestanding compared to 90 $wt\%$ for the Al-foil based
                      electrode), resulting in 120 mAh g−1electrode in contrast
                      to 10 mAh g−1electrode at 0.2 C. The electrochemical
                      performance of the freestanding LFMP/rGO electrodes is also
                      considerably better than the values reported in literature
                      for freestanding LFMP and LMP composites, and can even keep
                      up with those of LFP-based analogues. The freestanding
                      LFMP/rGO reported in this work is additionally attractive
                      due to its high gravimetric energy density (604 Wh
                      kg−1LFMP at 0.2C). The obtained results demonstrate the
                      advantage of freestanding LiFe0.2Mn0.8PO4/rGO electrodes and
                      their great potential for applications in lithium ion
                      batteries.},
      cin          = {IEK-1},
      ddc          = {600},
      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:000539083500022},
      doi          = {10.1016/j.mtener.2020.100416},
      url          = {https://juser.fz-juelich.de/record/877276},
}