In situ electron holography for characterizing Li ion accumulation in the interface between electrode and solid-state-electrolyte
| Autor: | Rui Wen, Yang Yang, Jie Cui, Xi Shen, Richeng Yu, Yuan Yao, Hui-Juan Guo |
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| Rok vydání: | 2021 |
| Předmět: |
In situ
Materials science Renewable Energy Sustainability and the Environment Electron energy loss spectroscopy Charge density 02 engineering and technology General Chemistry Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electron holography 0104 chemical sciences Ion Chemical physics Electrode General Materials Science Grain boundary 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 9:15038-15044 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/d1ta03517g |
| Popis: | An intensive understanding of the Li-ion transport mechanism in solid-state-electrolytes (SSEs) is crucial for the buildup of industrially scalable solid-state batteries. Here, we report on the charge distribution near the electrode/SSE interface and the Li-ion transport in solid-state-electrolyte Li7La3Zr2O12 (LLZO) via real-time in situ electron holography and electron energy loss spectroscopy (EELS) monitoring in a working cell model. The reconstructed phase image unravels the behavior of Li ions beneath the electrode during the charging process. The inhomogeneous accumulation occurs at charging, and the Li ions remained there after the reversal operation. Grain boundary (GB) may be the negative influence on the ion conductivity. These findings provide an in-depth understanding of the interfacial mechanism, and thus improve the optimized design of solid-state batteries. |
| Databáze: | OpenAIRE |
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