Micromechanism in All-Solid-State Alloy-Metal Batteries: Regulating Homogeneous Lithium Precipitation and Flexible Solid Electrolyte Interphase Evolution
| Autor: | Ji-Lei Shi, Rui Wen, Yu-Jie Guo, Wan-Ping Chen, Yang Shi, Yu-Guo Guo, Li-Jun Wan, Jing Wan, Feifei Jia, Yue-Xian Song, Hui-Juan Guo, Fuyi Wang |
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| Rok vydání: | 2020 |
| Předmět: |
Precipitation (chemistry)
Alloy chemistry.chemical_element General Chemistry Electrolyte engineering.material 010402 general chemistry Electrochemistry 01 natural sciences Biochemistry Catalysis 0104 chemical sciences Anode Colloid and Surface Chemistry chemistry Chemical engineering Electrode engineering Lithium Dissolution |
| Zdroj: | Journal of the American Chemical Society. 143:839-848 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/jacs.0c10121 |
| Popis: | Sulfide-based solid-state electrolytes (SSEs) matched with alloy anodes are considered as promising candidates for application in all-solid-state batteries (ASSBs) to overcome the bottlenecks of the lithium (Li) anode. However, an understanding of the dynamic electrochemical processes on alloy anode in SSE is still elusive. Herein, in situ atomic force microscopy gives insights into the block-formation and stack-accumulation behaviors of Li precipitation on an Li electrode, uncovering the morphological evolution of nanoscale Li deposition/dissolution in ASSBs. Furthermore, two-dimensional Li-indium (In) alloy lamellae and the homogeneous solid electrolyte interphase (SEI) shell on the In electrode reveal the precipitation mechanism microscopically regulated by the alloy anode. The flexible and wrinkle-structure SEI shell further enables the electrode protection and inner Li accommodation upon cycles, elucidating the functional influences of SEI shell on the cycling behaviors. Such on-site tracking of the morphological evolution and dynamic mechanism provide an in-depth understanding and thus benefit the optimizations of alloy-based ASSBs. |
| Databáze: | OpenAIRE |
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