Abstract

FZJ-2015-00211

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png $Li_7La_3Zr_2O_{12}$ based all solid state thin film batteries

Lobe, S.FZJ* ; Tsai, C.-L.FZJ* ; Finsterbusch, M.VS-II* ; Dellen, C.FZJ* ; Uhlenbruck, S.FZJ* ; Gehrke, H.-G.FZJ* ; Guillon, O.FZJ*

2014

Please use a persistent id in citations: http://hdl.handle.net/2128/8252

Abstract: Liquid organic electrolytes cause safety problems due to an insufficient thermal and electrochemical stability. One approach to avoid such disadvantages is the replacement of the liquid electrolyte by a solid one. Next to sulfides and phosphates, current research is focused on Li conducting ceramic oxide materials like Li7La3Zr2O12 (LLZ), a promising garnet-structured material with a Li ion conductivity of about 10-4 S/cm. Li ion conductivity can increased by partial substitution of Li or Zr. Since the ionic conductivity is about two orders of magnitude lower compared to liquid electrolytes, thin electrolyte layers are necessary for a low internal resistance of the cell. Complete thin film batteries based on a current collector substrate, a thin cathode, LLZ electrolyte layer and Li or a Li alloy thin film as anode are deposited by physical vapor deposition techniques. The deposition conditions are optimized for each compound and adjusted to the overall system. The resulting thin film batteries are analyzed with regard to electrochemical behavior, structural and morphological properties and element distribution.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 123 - Fuel Cells (POF2-123) (POF2-123)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2014

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Database coverage:

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