Journal article

Publication year: 2020

Pages: 20462-20468

Journal: ACS Applied Materials & Interfaces

Volume number: 12

Issue number: 18

ISSN: 1944-8244

Open access status: Green

DOI Link: https://doi.org/10.1021/acsami.0c02872

Publisher: American Chemical Society

Abstract: 
Gas evolution in conventional lithium-ion batteries using Ni-rich layered oxide cathode materials presents a serious issue that is responsible for performance decay and safety concerns, among others. Recent findings revealed that gas evolution also occurred in bulk-type solid-state batteries. To further clarify the effect that the electrolyte has on gassing, we report in this work-to the best of our knowledge-the first study comparing gas evolution in lithium-ion batteries with NCM622 cathode material and different electrolyte types, specifically solid (beta-Li3PS4 and Li6PS5Cl) versus liquid (LP57). Using isotopic labeling, acid titration, and in situ gas analysis, we show the presence of O-2 and CO2 evolution in both systems, albeit with different cumulative amounts, and possible SO2 evolution for the lithium thiophosphate-based cells. Our results demonstrate the importance of considering gas evolution in solid-state batteries, especially the formation and release of highly corrosive SO2, due to side reactions with the electrolyte.

Harvard Citation style: Strauss, F., Teo, J., Schiele, A., Bartsch, T., Hatsukade, T., Hartmann, P., et al. (2020) Gas Evolution in Lithium-Ion Batteries: Solid versus Liquid Electrolyte, ACS Applied Materials & Interfaces, 12(18), pp. 20462-20468. https://doi.org/10.1021/acsami.0c02872

APA Citation style: Strauss, F., Teo, J., Schiele, A., Bartsch, T., Hatsukade, T., Hartmann, P., Janek, J., & Brezesinski, T. (2020). Gas Evolution in Lithium-Ion Batteries: Solid versus Liquid Electrolyte. ACS Applied Materials & Interfaces. 12(18), 20462-20468. https://doi.org/10.1021/acsami.0c02872