Perspective on Warm Isostatic Pressing for Mass Production of Solid-State Batteries
Timo Rabe a
a Quintus Technologies AB
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
Advances in Li-Metal All-Solid-State Batteries: Processing, Manufacturing, and Integration - #AdvanceSSB
Sevilla, Spain, 2025 March 3rd - 7th
Organizer: Juan Carlos Gonzalez-Rosillo
Oral, Timo Rabe, presentation 372
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.372
Publication date: 16th December 2024

Perspective on Warm Isostatic Pressing for Mass Production of Solid-State Batteries

 

T. Rabe, Västerås / SE-721 66, M. Dixit, Oak Ridge / TN 37830, C. Beamer, Columbus / OH 43035, J. Shipley Västerås / SE-721 66, J. Fischer Västerås / SE-721 66, Ilias Belharouak / Oakridge National Laboratory 5200, 1 Bethel Valley Rd, Oak Ridge, TN 37830, United States

 

In recent years, there have been serious commercial advancements with regards to solid-state batteries (SSBs), in which liquid electrolyte is replaced by a solid-state electrolyte (SSE).[1,2,3] Cell concepts with functional layers realizing zero-excess lithium metal anodes were developed, combining overall reduced weight and lithium metal anodes, achieving superior energy density (>1000 Wh/l).[4,5] The need for external pressure, also called “stack pressure”, of SSBs due to cell volume change in operation and subsequent particle contact loss was reduced to a minimum (~2 MPa) with cells based on highly conductive sulfide SSEs densified by warm isostatic pressing (WIP).[5,6] Considering mass production, it seems that the common, uniaxial methods for calendering lead to insufficient composite density and lower electrochemical performance.[7] Most individuals working in battery production are critical towards WIP, because of its batch process characteristic. Ironically, the knowledge about WIPs scaling potential is unknown to the community.[8] Vessel volumes for presses which are already employed in mass production have reached 2000 l and above. With this presentation Quintus Technologies will give the audience at the “MATSUS conference” a summarizing perspective of basics for (warm) isostatic pressing and the status for industrial production of SSBs from an equipment suppliers view.

 

Literature: [1] J. Janek, W. Zeier, Nat. Energy 2016, 1, 16141. [2] D. H. S. Tan, S. Meng et al., Joule 2022, 6, 1755-1769. [3] J. Janek, W. Zeier, Nat. Energy 2023, 8, 230-240. [4] Y.-G. Lee et al., Nat. Energy 2020, 5, 299-308. [5] W. Choi et al., ACS Appl. Mater. Interfaces 2024, 16, 26066-266078. [6] Y.-T. Chen, S. Meng et al., Adv. Energy Mater. 2024, 2304327. [7] C. A. Heck, Batteries & Supercaps 2024, 7, e202300487. [8] M. Dixit, T. Rabe et al., Device 2024, 100370.

We would like to acknowledge Oak Ridge National Laboratory for their continuing support and especially Ilias Belharouak, Marm Dixit, Rachid Essehli, Anuj Bisht, Ruhul Amin, Mengya Li, Jaswinder Sharma and Mahalingam Balasubramanian. Further, we would like to thank Chad Beamer and Andrew Cassese from the Quintus US team for doing trials on site.

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