Solid Polymer-in-Ceramic Electrolyte Formed by Electrophoretic Deposition

We present here a new solid composite polymer-in-ceramic electrolyte formed by electrophoretic deposition (EPD) and saturated with lithium iodide. Composite films have been characterized by ESEM, MTGA, XPS, NMR and impedance-spectroscopy methods. We have found that the EPD of polyethylene oxide alon...

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Published in:Journal of the Electrochemical Society 2015-01, Vol.162 (11), p.D3084-D3089
Main Authors: Blanga, R., Burstein, L., Berman, M., Greenbaum, S. G., Golodnitsky, D.
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Language:English
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cited_by cdi_FETCH-LOGICAL-c334t-e9046bbb1c0d8d506b356ce8648c3db7e934eefd6500e79fe04f3d74abb81e543
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container_end_page D3089
container_issue 11
container_start_page D3084
container_title Journal of the Electrochemical Society
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creator Blanga, R.
Burstein, L.
Berman, M.
Greenbaum, S. G.
Golodnitsky, D.
description We present here a new solid composite polymer-in-ceramic electrolyte formed by electrophoretic deposition (EPD) and saturated with lithium iodide. Composite films have been characterized by ESEM, MTGA, XPS, NMR and impedance-spectroscopy methods. We have found that the EPD of polyethylene oxide alone is impossible, either from acetone- or from ethanol-based suspensions. Addition of polyethylene imine to the suspension increases the deposition rate of both LiAlO2 ceramic particles and polyethylene oxide, and the duration of stirring increases the PEO content in the film. Composite LiAlO2:LiI:P(EO)3+x electrolyte, in which salt/ceramic grain-boundaries play a dominant role in lithium-ion transport, is characterized by high, temperature-independent conductivity (0.5 mS/cm). Lithium-ion species of higher and lower mobility have been distinguished in NMR spectra. Deconvolution of the spectra revealed that the fraction of the more mobile lithium ions was about 2% between 25 and 65°C, and it increases to 10% above 70°C.
doi_str_mv 10.1149/2.0221511jes
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title Solid Polymer-in-Ceramic Electrolyte Formed by Electrophoretic Deposition
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