Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.398
Publication date: 16th December 2024
Enabling scalable processing of halides with high Li conduction
R. Artal1, R.del Olmo2, N. Stankiewicz2, S. Daubner3, R. Jimenez-Rioboo1, S. Cooper3, I. Villanueva2, A. Aguadero1,3
1 Instituto de Ciencia de Materiales de Madrid, CSIC, Madrid, Spain
2 POLYMAT, University of Basque Country, San Sebastian, Spain
3 Imperial College, London, United Kingdom
The development of all-solid-state batteries (ASSBs) has the potential to be transformational leading to safer, longer life and higher energy and power density performance to that of conventional based on liquid organic electrolytes. To achieve this goal, solid electrolytes that possess high cation conductivity combined with the adequate electro-chemo-mechanic stability and sustainable, low-cost and large scale processability have to be developed.
In this work, we focus the study on families of chlorines using non-critical elements that can act catholytes due to their high stability at high voltages (>4V). These chlorines have been reported to have very high Li conductivities when disorder is enforced by high energy mechanical milling leading to metastable phases high low thermal stability. This imposes a limitation in the scalability of the production of these systems and in their integration in full devices.
Here, we analyze a range of inorganic and polymer-inorganic solid electrolytes with a combination of experimental and computational techniques, to qualitatively understand the structural and chemical factors affecting the ion mobility in these systems in correlation with their processability. We use a combination of high frequency range (3GHz-mHz) electrochemical testing with solid-state NMR, synchrotron and neutron diffraction studies and FIB-SEM analysis with multiscale simulations to correlate local and long range structural and chemical features with the electrochemical performance. Finally, we propose a highly disorder spinel based on non-critical materials as a potential electrolyte high combined enhanced electrochemical performance and processability.
We acknowledgeHorizon Europe for project SEATBELT (101069726) and the Spanish Ministry for Science and Innovation for the project (TED2021-129254B-C22).
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