|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'585
Articles rated: 2609
24 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Mapping the Nanoscopic Filament Growth Kinetics in Lithium Solid Electrolytes | | Ziheng Lu
; Ziwei Yang
; Cheng Li
; Kai Wang
; Jinlong Han
; Chunlei Yang
; Wenjie Li
; | | Date: |
4 Oct 2020 | | Abstract: | Ceramic lithium conductors such as Li7La3Zr2O12 (LLZO) are promising solid
electrolytes for solid-state batteries. However, the lithium filaments can
penetrate the electrolytes at high current densities, leading to cell failure.
Due to the limited spatial resolution of macroscopic electrochemical
measurement techniques, the nanoscopic growth kinetics of lithium filaments and
its physical origin remain unrevealed. Here, we report in-situ nanoscale
electrochemical characterizations of the filament growth kinetics in LLZO using
conductive-atomic force microscope (c-AFM). Significant local inhomogeneity is
observed with a hundredfold decrease in the filament triggering bias at the
grain boundaries compared with the grain interiors. The origin of the local
weakening is assigned to the nanoscopic variation of elastic modulus and
surface potential. Further reverse cycles lead to the discovery of the
memristive behavior of lithium filament in LLZO based on which a model
memristor is designed and demonstrated. A high on/off ratio of ~1E5 is achieved
consistently for over 200 cycles. This work provides insights into the
nanoscale electrochemical deposition stability in solid-state batteries and
opens up opportunities for novel designs of memristive devices. | | Source: | arXiv, 2010.01624 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER