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The effects of calcination parameters of garnet-type ALLZTO solid electrolyte powders on the deposition of thick films via powder aerosol deposition (PAD) method

Title data

Sozak, Mutlucan ; Hennerici, Lukas ; Paulus, Daniel ; Kita, Jaroslaw ; Moos, Ralf:
The effects of calcination parameters of garnet-type ALLZTO solid electrolyte powders on the deposition of thick films via powder aerosol deposition (PAD) method.
Event: 98. DKG-Jahrestagung , 27.03.-30.03.2023 , Jena.
(Conference item: Conference , Speech )

Project information

Project title:
Project's official title
Project's id
FB2-AdBatt - Aerosoldeposition zur Herstellung von Batterien mit gradierter Kathode

Project financing: Bundesministerium für Bildung und Forschung

Abstract in another language

To realize the All-Solid-State Battery (ASSB) future solid electrolytes (SE) play a crucial role on removing the safety concerns due to their chemical stability and exhibiting high total conductivity at room temperature (RT). The crystal phase is one of the main aspects that determines the total conductivity of a SE at RT. The Al and Ta dopants in garnet-type LLZO stabilize the type cubic phase, which provides higher conductivity in LLZO. Therefore, ALLZTO stands out as a promising SE in prospective industrial applications of ASSBs regarding to its properties mentioned above. Ceramic powders in the desired composition can be directly deposited on a wide variety of substrate materials at room temperature via the powder aerosol deposition (PAD) method and dense films in the μmrange are obtained in several minutes. As the deposition depend on process parameters (carrier gas, flow rate, scan speed etc.), starting powder properties (e.g. particle size distribution, and crystallite size) also have to be suitable for a successful deposition. In this work, we synthesized ALLZTO SE powders by the mixed oxide technique. The steps in the calcination process have been modified to obtain highly pure cubic phase in the structure. XRD/Rietveld and particle size distribution analyses were carried out on the calcined powders and the effects of starting powder properties on the PAD process were demonstrated. Electrochemical properties of SE thick films were determined and correlated with the purity of starting powders. The current work shows a successful deposition of cubic ALLZTO powders on various substrates. This is promising for both the industrialization of the PAD method and the utilization of ALLZTO powders in ASSB technology.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Centres > Bayerisches Zentrum für Batterietechnik - BayBatt
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 11 Apr 2023 06:01
Last Modified: 11 Apr 2023 06:01