期刊
ACS APPLIED MATERIALS & INTERFACES
卷 15, 期 13, 页码 17344-17352出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c23038
关键词
thermal wave sensing; solid-state batteries; interface morphology; lithium metal; operando characterization
The study introduces the concept of thermal wave sensing and demonstrates that modified 3 omega sensors can noninvasively probe the morphology evolution of the lithium metal-solid-state electrolyte interface. The thermal interface resistance measured by the 3 omega sensors directly relates to the physical morphology of the interface.
The lithium metal-solid-state electrolyte interface plays a critical role in the performance of solid-state batteries. However, operando characterization of the buried interface morphology in solid-state cells is particularly difficult because of the lack of direct optical access. Destructive techniques that require isolating the interface inadvertently modify the interface and cannot be used for operando monitoring. In this work, we introduce the concept of thermal wave sensing using modified 3 omega sensors that are attached to the outside of the lithium metal-solid-state cells to noninvasively probe the morphology of the lithium metal-electrolyte interface. We show that the thermal interface resistance measured by the 3 omega sensors relates directly to the physical morphology of the interface and demonstrates that 3 omega thermal wave sensing can be used for noninvasive operando monitoring the morphology evolution of the lithium metal- solid-state electrolyte interface.
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