| Autor: |
Jeong Beom Lee, Seulki Chae, Hyejeong Jeong, Hong Seo Hwang, Jiwon Jung, Ji Heon Ryu, Seung M. Oha |
| Předmět: |
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| Zdroj: |
Journal of The Electrochemical Society; 2017, Vol. 164 Issue 4, pA864-A866, 3p |
| Abstrakt: |
Copper metavanadate (CuV2O6) is tested as a negative electrode for lithium-ion batteries. In the first lithiation, CuV2O6 takes 12Li+ ions/electrons, during which both Cu2+ and V5+ ions are reduced into their elemental states. In the forthcoming de-lithiation period, only the metallic vanadium is oxidized to form LiVO3, while the metallic copper is idling. From the second cycle, the as-generated LiVO3 is lithiated by a conversion reaction, delivering a reversible capacity of ca. 1000 mA h g-1. It shows an unusually good cycle retention and Coulombic efficiency owing to the beneficial roles offered by the idling metallic copper. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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