| Autor: |
Singer, Lennart, Mohamed, M. A. A., Hahn, Henrik, Gonzalez-Martinez, Ignacio G., Hantusch, Martin, Wenelska, Karolina, Mijowska, Ewa, Büchner, Bernd, Hampel, Silke, Gräßler, Nico, Klingeler, Rüdiger |
| Zdroj: |
Journal of Materials Chemistry A; 7/14/2023, Vol. 11 Issue 26, p14294-14303, 10p |
| Abstrakt: |
We report in the context of lithium-rich antiperovskite cathode materials outstanding electrochemical properties of (Li2Fe)SeO, which for the first time was synthesized via direct ball-milling. The unique structured material displays an electrochemical cycling performance of 250 mA h g−1 at 0.1C when used as a cathode in lithium-ion batteries. Comprehensive electrochemical analysis combined with detailed transmission electron microscopy studies reveal that, above 2.5 V, the multi electron storage mechanism involves conversion of (Li2Fe)SeO to Fe1−xSex. Our results furthermore demonstrate the general relevance of our findings to the whole class of antiperovskite cathode materials and present a route to strongly enhance their cell performance by avoiding the degradation path deciphered by our studies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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