Imaging dendrite growth in solid-state sodium batteries using fluorescence tomography technology
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 Eu<sup>3+</sup>-doped Na<sub>3</sub>Zr<sub>2</sub>Si<sub>2</sub>PO<sub>12</sub> 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 severe performance deterioration occurs. Furthermore, by regulating the Eu<sup>3+</sup> doping ratio, a record-high sodium plating/stripping cycling stability for more than 1 year (487.5 days) is achieved at 25°C. This work demonstrates an FT method observing sodium dendrite growth in SSBs and will promote the functional design of high-performance SEs.
Authors
- Xile Han (ORCID: https://orcid.org/0000-0003-0569-9212)
- Enyue Zhao (ORCID: https://orcid.org/0000-0003-4170-7427)
- Yuefeng Su (ORCID: https://orcid.org/0000-0002-5144-2832)
- Debao Fang (ORCID: https://orcid.org/0000-0002-0856-5984)
- Qing Ni (ORCID: https://orcid.org/0000-0002-7339-0631)
- Haibo Jin (ORCID: https://orcid.org/0000-0001-7485-9692)
- Tuan Guo (ORCID: https://orcid.org/0000-0001-6189-1335)
- Xiaobin Xue (ORCID: https://orcid.org/0000-0001-5392-8601)
- Na Li (ORCID: https://orcid.org/0000-0001-9739-8964)
- Ning Li (ORCID: https://orcid.org/0000-0002-1830-2723)
- Jingbo Li (ORCID: https://orcid.org/0000-0002-9432-8327)
- Chengzhi Wang (ORCID: https://orcid.org/0000-0003-4649-9567)
- Lai Chen (ORCID: https://orcid.org/0000-0002-8226-3140)
- Xiong Xiao (ORCID: https://orcid.org/0000-0002-1793-5502)
- Shuaishuai Yang
- Jingxin He
Institutions
- Beijing Institute of Technology (CN)
- Jinan University (CN)
- Beijing University of Technology (CN)
- Songshan Lake Materials Laboratory (CN)
- Zhuhai Institute of Advanced Technology (CN)
- Chongqing University of Technology (CN)
Publication Details
- Journal
- Science Advances
- Published
- 2024-11-20
- DOI
- https://doi.org/10.1126/sciadv.adr0676
- Citations
- 24
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 5.01
Funders
- National Natural Science Foundation of China
- Beijing Institute of Technology