A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries
| Autor: | Sang Young Lee, Gabin Yoon, Hyunseok Moon, Zhenglong Xu, Jooha Park, Jian Wang, Yoon Joo Ko, Kisuk Kang, Sung Pyo Cho, Jongwoo Lim |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Materials science Science Intercalation (chemistry) General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Calcium 010402 general chemistry 01 natural sciences Redox General Biochemistry Genetics and Molecular Biology Article law.invention Batteries law Ionic conductivity Multidisciplinary High voltage General Chemistry 021001 nanoscience & nanotechnology Cathode 0104 chemical sciences chemistry Chemical engineering Electrode 0210 nano-technology Materials for energy and catalysis |
| Zdroj: | Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Rechargeable calcium batteries have attracted increasing attention as promising multivalent ion battery systems due to the high abundance of calcium. However, the development has been hampered by the lack of suitable cathodes to accommodate the large and divalent Ca2+ ions at a high redox potential with sufficiently fast ionic conduction. Herein, we report a new intercalation host which presents 500 cycles with a capacity retention of 90% and a remarkable power capability at ~3.2 V (vs. Ca/Ca2+) in a calcium battery. The cathode material derived from Na0.5VPO4.8F0.7 is demonstrated to reversibly accommodate a large amount of Ca2+ ions, forming a series of CaxNa0.5VPO4.8F0.7 (0 Rechargeable calcium batteries are promising multivalent battery systems but the lack of suitable electrodes hampers their development. Here the authors report a cathode derived from polyanion framework that demonstrates uncommonly stable and fast intercalation behaviours of calcium ions. |
| Databáze: | OpenAIRE |
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