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@INPROCEEDINGS{Reppert:188042,
      author       = {Reppert, Thorsten and Tsai, Chih-Long and Finsterbusch,
                      Martin and Uhlenbruck, Sven and Guillon, Olivier and Bram,
                      Martin},
      title        = {{O}xide-ceramic electrolyte layers for all-solid-state
                      lithium batteries},
      reportid     = {FZJ-2015-01520},
      year         = {2015},
      abstract     = {In the past decade, electricity generated from renewable
                      energy sources, as well as electro mobility have gained much
                      importance in our society. With this readiness to change the
                      current system, an increase of requirements for electric
                      grid and safety aspects of energy storage systems appear.
                      All-solid-state lithium batteries (ASB) have better safety
                      properties due to the non-flammable solid electrolyte than
                      common lithium ion batteries (LIB), which use flammable
                      organic liquid as electrolyte. Additionally, a higher energy
                      density is possible because of their compatibility with
                      using high voltage cathode materials. Oxide-ceramic lithium
                      ion conductors such as Li7La3Zr2O12 (LLZ) [1] have the
                      advantage of inertness in oxygen atmosphere, which
                      simplifies their handling during the material processing.
                      LLZ’s stability when contacting lithium metal and its wide
                      electrochemical window (usable up to 8V vs. Li/Li+) would
                      provide higher energy densities than LIB. In combination
                      with its good total ion conductivity of about 10-4 S cm-1 at
                      room temperature [2], it is one of the most promising
                      candidates for all-solid-state battery application. LLZ was
                      synthesized and by substitution of Al [2], Ta [3] and Y [4]
                      into the LLZ structure, the structural stability and its
                      total ion conductivity were improved. Ta substituted LLZ
                      indicated a highest total ion conductivity of about 10-3 S
                      cm-1 and almost no dependence on its lithium concentration.
                      After investigation of bulk electrolyte materials, an ASB
                      prototype cell using bulk LLZ as solid electrolyte was
                      fabricated at IEK-1 and proved to run a LED. To bridge lab
                      works and real applications, large size LLZ functional
                      layers need to be fabricated by different established
                      technologies. Therefore, the investigated LLZ has been
                      processed by tape casting and was used for sintering
                      studies, in order to obtain highly dense solid electrolyte
                      layers and also mixed electrode films for prospective
                      all-solid-state lithium battery application.References:[1]
                      Murugan et al., Angew. Chem. Int. Ed. 46 (2007) 7778.[2]
                      Hubaud et al., J. Mater. Chem. A. 1 (2013) 8813. [3]
                      Buschmann et al., Phys. Chem. Chem. Phys. 13 (2011)
                      19378.[4] Murugan et. al., Electrochem. Commun. 13 (2011)
                      1373.},
      month         = {Jan},
      date          = {2015-01-21},
      organization  = {Batterieforum Deutschland 2015, Berlin
                       (Germany), 21 Jan 2015 - 23 Jan 2015},
      cin          = {IEK-1 / JARA-ENERGY},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {131 - Electrochemical Storage (POF3-131) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/188042},
}