Imaging dendrite growth in solid-state sodium batteries using fluorescence tomography technology.

ABSTRACT: Dendrite growth in solid-state sodium batteries (SSBs) is one of the most concerned issues that critically affect the battery efficiency and cycling performance. Here, by designing a fluorescent Eu³⁺-doped Na₃Zr₂Si₂PO₁₂ solid electrolyte (SE) to facilitate three-dimensional (3D) optical imaging on a confocal laser scanning microscopy, a fluorescence tomography (FT) method is developed for observing the sodium dendrite growth during charge/discharge cycles of the SSBs in a 3D view. It is quantitatively revealed that small-size sodium islands appear after several cycles, and with the cycles increasing, large-size dendrites in tens of micrometers gradually form until a critical sodium dendrite volume arrives where a short circuit or sever

SUBMITTER: Yang S 

PROVIDER: S-EPMC11578186 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature