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@ARTICLE{Charles:837288,
      author       = {Charles, Daniel Scott and Feygenson, Mikhail and Page,
                      Katharine and Neuefeind, Joerg and Xu, Wenqian and Teng,
                      Xiaowei},
      title        = {{S}tructural water engaged disordered vanadium oxide
                      nanosheets for high capacity aqueous potassium-ion storage},
      journal      = {Nature Communications},
      volume       = {8},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2017-06257},
      pages        = {15520 -},
      year         = {2017},
      abstract     = {Aqueous electrochemical energy storage devices using
                      potassium-ions as charge carriers are attractive due to
                      their superior safety, lower cost and excellent transport
                      properties compared to other alkali ions. However, the
                      accommodation of potassium-ions with satisfactory capacity
                      and cyclability is difficult because the large ionic radius
                      of potassium-ions causes structural distortion and
                      instabilities even in layered electrodes. Here we report
                      that water induces structural rearrangements of the
                      vanadium-oxygen octahedra and enhances stability of the
                      highly disordered potassium-intercalated vanadium oxide
                      nanosheets. The vanadium oxide nanosheets engaged by
                      structural water achieves high capacity (183 mAh g−1
                      in half-cells at a scan rate of 5 mV s−1,
                      corresponding to 0.89 charge per vanadium) and excellent
                      cyclability (62.5 mAh g−1 in full cells after 5,000
                      cycles at 10 C). The promotional effects of structural water
                      on the disordered vanadium oxide nanosheets will contribute
                      to the exploration of disordered structures from
                      earth-abundant elements for electrochemical energy storage.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1},
      ddc          = {500},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000401849900001},
      doi          = {10.1038/ncomms15520},
      url          = {https://juser.fz-juelich.de/record/837288},
}