Can I read Mechanical Regulation of Lithium Intrusion Probability in Garnet Solid Electrolytes on EtoBox?

Mechanical Regulation of Lithium Intrusion Probability in Garnet Solid Electrolytes by Geoff McConohy; Xin Xu; Teng Cui; Edward Barks; Sunny Wang; Emma Kaeli; Celeste Melamed; X. Wendy Gu; William C. Chueh is a Engineering article available to read on EtoBox.

What is Mechanical Regulation of Lithium Intrusion Probability in Garnet Solid Electrolytes about?

Solid electrolytes in rechargeable lithium-metal batteries are susceptible to lithium-metal short circuiting during plating, and the root cause is under debate. In this work, we investigated statistically the effect of locally and globally applied stress on lithium penetration initiation in Li 6.6 La 3 Ta 0.4 Zr 1.6 O 12 (LLZO) via operando microprobe scanning electron microscopy. Statistical analysis revealed that the cumulative probability of intrusion as a function of lithium-metal diameter follows a Weibull distribution. Upon increasing the microprobe–LLZO contact force, the characteristic failure diameter of lithium metal decreases significantly. In addition, we control the direction of intrusion propagation by applying a 0.070% compressive strain via operando cantilever beam-bending experiments. Overall, we find that the root cause of lithium intrusion into the electrolyte is a combination of current focusing and the presence of nanoscale cracks, rather than electronic leakage or electrochemical reduction. These insights highlight the mechanical tunability of electrochemical plating reactions in brittle solid electrolytes.

Who reads Mechanical Regulation of Lithium Intrusion Probability in Garnet Solid Electrolytes?

Author

Geoff McConohy; Xin Xu; Teng Cui; Edward Barks; Sunny Wang; Emma Kaeli; Celeste Melamed; X. Wendy Gu; William C. Chueh

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)