| Autor: |
Tianyue Zheng, Wen Yuan, Thorsten Langer, Isaac Lund, Simon Lux, Ann-Christin Gentschev, Gao Liu |
| Rok vydání: |
2017 |
| Zdroj: |
ECS Meeting Abstracts. :351-351 |
| ISSN: |
2151-2043 |
| Popis: |
Silicon (Si) with porous structure could possibly accommodate the large volume expansion of Si in lithium ion batteries, avoiding fast capacity fading during charge/discharge. Herein, we report a composite electrode made from porous Si with only 5 wt% conductive polymer binder. By limiting the lithiation level, we demonstrate a stable cycled cell with a greatly extended cycle life and high coulombic efficiency beyond 99.5%. Both the morphology study and electrochemical characterization suggest that electrodes are able to accommodate over 50% volume change without any capacity fading during cell operation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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