Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Ionic Conductivity of Li6PS5Cl0.5Br0.5 Argyrodite Electrolyte at Different Operating and Pelletizing Pressures and Temperatures

Version 1 : Received: 12 June 2023 / Approved: 12 June 2023 / Online: 12 June 2023 (08:20:07 CEST)

A peer-reviewed article of this Preprint also exists.

Dunham, J.; Carfang, J.; Yu, C.-Y.; Ghahremani, R.; Farahati, R.; Farhad, S. Ionic Conductivity of the Li6PS5Cl0.5Br0.5 Argyrodite Electrolyte at Different Operating and Pelletizing Pressures and Temperatures. Energies 2023, 16, 5100. Dunham, J.; Carfang, J.; Yu, C.-Y.; Ghahremani, R.; Farahati, R.; Farhad, S. Ionic Conductivity of the Li6PS5Cl0.5Br0.5 Argyrodite Electrolyte at Different Operating and Pelletizing Pressures and Temperatures. Energies 2023, 16, 5100.

Abstract

All-solid-state lithium batteries (ASSLBs) using argyrodite electrolyte materials have shown promise for applications in electric vehicles (EVs). However, understanding the effects of pro-cessing parameters on the ionic conductivity of these electrolytes is crucial for optimizing battery performance and manufacturing methods. This study investigates the influence of electrolyte op-erating temperature, electrolyte operating pressure, electrolyte pelletization pressure, and electro-lyte pelletizing temperature on the ionic conductivity of Li6PS5Cl0.5Br0.5 argyrodite electrolyte (AmpceraTM, D50=10 µm). A specially designed test cell is employed for the experimental meas-urements, allowing for controlled pelletization and testing within the same tooling. The results demonstrate the significant impact of the four parameters on the ionic conductivity of the argy-rodite electrolyte. The electrolyte operating temperature has a more pronounced effect than oper-ating pressure, and pelletizing temperature exerts a greater influence than pelletizing pressure. This study provides graphs that aid in understanding the interplay between these parameters and achieving desired conductivity values. It also establishes a baseline for the maximum pelletizing temperature before undesirable degradation of electrolyte occurs. By manipulating the pelletizing pressure, operating pressure, and pelletizing temperature, battery engineers can achieve the desired conductivity for specific applications. The findings emphasize the need to consider operating conditions to ensure satisfactory low-temperature performance, particularly for EVs. Overall, this study provides valuable insights into processing and operating conditions for ASSLBs utilizing Li6PS5Cl0.5Br0.5 argyrodite electrolyte.

Keywords

All-solid-State Battery; Argyrodite Electrolyte; Li6PS5CL0.5Br0.5; Pelletizing; Pressure; Temperature

Subject

Engineering, Energy and Fuel Technology

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