Interfacial Evolution of Lithium Dendrites and Their Solid Electrolyte Interphase Shells of Quasi‐Solid‐State Lithium‐Metal Batteries
| Autor: | Bing Liu, Rui Wen, Yang Shi, Li-Jun Wan, Jing Wan, Gui-Xian Liu, Yue-Xian Song, Yu-Guo Guo, Tong-Tong Zuo |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science 010405 organic chemistry Shell (structure) chemistry.chemical_element General Medicine General Chemistry Polymer Electrolyte 010402 general chemistry 01 natural sciences Stripping (fiber) Catalysis 0104 chemical sciences law.invention Chemical engineering chemistry Optical microscope law Electrode Lithium Interphase Lithium dendrite Lithium metal Quasi-solid |
| Zdroj: | Angewandte Chemie International Edition. 59:18120-18125 |
| ISSN: | 1521-3773 1433-7851 |
| DOI: | 10.1002/anie.202001117 |
| Popis: | Unstable electrode/solid-state electrolyte interfaces and internal lithium dendrite penetration hamper the applications of solid-state lithium-metal batteries (SSLMBs), and the underlying mechanisms are not well understood. Herein, in situ optical microscopy provides insights into the lithium plating/stripping processes in a gel polymer electrolyte and reveals its dynamic evolution. Spherical lithium deposits evolve into moss-like and branch-shaped lithium dendrites with increasing current densities. Remarkably, the on-site-formed solid electrolyte interphase (SEI) shell on the lithium dendrite is distinctly captured after lithium stripping. Inducing an on-site-formed SEI shell with an enhanced modulus to wrap the lithium precipitation densely and uniformly can regulate dendrite-free behaviors. An in-depth understanding of lithium dendrite evolution and its functional SEI shell will aid in the optimization of SSLMBs. |
| Databáze: | OpenAIRE |
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