Garnet-type oxide electrolyte with novel porous-dense bilayer configuration for rechargeable all-solid-state lithium batteries

Garnet-type oxide electrolyte with novel porous-dense bilayer configuration for rechargeable... Using Al-contained Li6.75La3Zr1.75Ta0.25O12 (LLZTO) with high conductivity as electrolyte, we design and prepare a kind of monolithic-sintered LLZTO pellets with a novel porous-dense bilayer configuration, which integrates a dense LLZTO layer together with a porous LLZTO layer. Such bilayered configuration LLZTO is tested for all-solid-state lithium batteries. LiCoO2 as cathode active material is infiltrated into the porous electrolyte layer by sol-gel method, and lithium metal is used as anode and its interfacial contact with the dense electrolyte layer is optimized by tuning the surface roughness of the electrolyte. Moreover, a prototype all-solid-state lithium-oxygen battery is also assembled by introducing carbon and silver into the porous electrolyte layer as electronic conductive component in the air electrode and by contacting lithium metal with the dense electrolyte layer as anode. The cycle performances of both prototype batteries are tested to evaluate the function and limitations of the bilayer-structured oxide electrolyte. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Garnet-type oxide electrolyte with novel porous-dense bilayer configuration for rechargeable all-solid-state lithium batteries

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
D.O.I.
10.1007/s11581-017-2224-5
Publisher site
See Article on Publisher Site

Abstract

Using Al-contained Li6.75La3Zr1.75Ta0.25O12 (LLZTO) with high conductivity as electrolyte, we design and prepare a kind of monolithic-sintered LLZTO pellets with a novel porous-dense bilayer configuration, which integrates a dense LLZTO layer together with a porous LLZTO layer. Such bilayered configuration LLZTO is tested for all-solid-state lithium batteries. LiCoO2 as cathode active material is infiltrated into the porous electrolyte layer by sol-gel method, and lithium metal is used as anode and its interfacial contact with the dense electrolyte layer is optimized by tuning the surface roughness of the electrolyte. Moreover, a prototype all-solid-state lithium-oxygen battery is also assembled by introducing carbon and silver into the porous electrolyte layer as electronic conductive component in the air electrode and by contacting lithium metal with the dense electrolyte layer as anode. The cycle performances of both prototype batteries are tested to evaluate the function and limitations of the bilayer-structured oxide electrolyte.

Journal

IonicsSpringer Journals

Published: Jul 15, 2017

References

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