Solid lithium batteries with non-wovens – an innovative process for a new cell structure of inorganic solid-state batteries
In solid state batteries, the liquid electrolyte is replaced by a solid, non-flammable ion conductor. The advantage is that the evaporation of the liquid electrolyte of traditional batteries and subsequent ignition in the event of a short circuit in the battery – is avoided and the safety of battery cells is significantly increased. Solid state batteries also facilitate the use of lithium metal anodes which enable higher energy densities and thus significantly higher electromobility.
The goal of the “FLiBatt” project is to develop an innovative process for a new cell structure based on non-woven materials, which should enable the cost-effective production of solid-state batteries.
Another research focus is the development of thin protective layers on the cathode active material.
As part of the project, Glatt Ingenieurtechnik installed a fluidized bed reactor at the site of Fraunhofer ISE, a project partner.
Using this reactor, powdered battery materials can be modified in a semi-continuous or fully continuous process, and then used in the production of highly efficient battery cells. It is also possible to enhance the surfaces of the powders with a thin protective layer in the nanometer range and thus protect the powders from undesirable decomposition processes that can take place in the battery cell.
In this way, the project aims to bring solid electrolyte batteries closer to industrial-scale production.
As part of the “FLiBatt” project, the powder for the cathodes is coated at Glatt. This step is necessary to protect the material from the electrolyte and to increase the cycle stability. Glatt Powder Synthesis is the first technology that allows this to be done economically on an industrial scale.
EDX mapping of a Li3PO4 coating on NMC 622 using the tracer elements phosphorus (coating) and manganese (core)
Since October 2019, the project partners have been working on the development of a novel battery cell architecture for the realization of solid-state batteries.
- ContiTech Elastomer-Beschichtungen GmbH
- Freudenberg Technology Innovation SE & Co. KG
- Glatt Ingenieurtechnik GmbH
- Fraunhofer-Institut für Solare Energiesysteme (ISE)
The “FLiBatt” project is funded by the German Federal Ministry for Economic Affairs and Climate Action. The project executing organization is Projektträger Jülich (PtJ).
Duration: 10/2019 – 03/2023
Funding code: 03ETE022B
Further information on this topic and related topics can also be found in the following publications:
January 2022: Glatt expands technology center with new laboratory plant for powder synthesis
June 2021: ‘Fraunhofer IKTS operates world’s first flameless high-temperature powder synthesis plant’
March 2021: Glatt Ingenieurtechnik celebrates continued business success with third expansion of its Technology Center
Published article: ‘Ceramic Raw Materials from the Pulsating Hot Gas Stream’ PDF, English
Published article: ‘New Battery Material by Powder Synthesis’ PDF, English