| Autor: |
Putro, Dimas Yunianto, Lestari, Kiki Rezki, Alfaruqi, Muhammad Hilmy, Alfaza, M. Ghalib, Zulkifli, Song, Moonsu, Lee, Seunggyeong, Sambandam, Balaji, Mathew, Vinod, Kim, Jaekook |
| Zdroj: |
Journal of Materials Chemistry A; 7/7/2024, Vol. 12 Issue 25, p15453-15462, 10p |
| Abstrakt: |
Zinc-ion batteries (ZIBs) have garnered substantial attention as a potential alternative to Li-ion batteries (LIBs) because of their low cost and high safety. However, commercialization challenges persist for ZIBs, which are primarily attributed to the absence of electrode materials with sufficient energy density. In this study, we initiate the exploration of β-LiVOPO4 as a high-energy and high-power ZIB cathode due to its robust 3D structural framework and elevated operating potential. Specifically, we achieved a high working voltage of 1.61 V vs. Zn/Zn2+ for β-LiVOPO4. The cathode delivered a discharge capacity of 114.1 mA h g−1 at a current density of 100 mA g−1 with considerable cyclability and rate performance. We explored the storage mechanism of the β-LiVOPO4 cathode using various characterization techniques, including in situ synchrotron X-ray diffraction (XRD), ex situ X-ray absorption spectroscopy, ex situ XRD, and theoretical calculations. During cycling, a reversible and stable phase transition through capacitive-based surface reactions and repeated Li+/Zn2+ (de)insertion were maintained. This contributed to the high electrochemical performance of β-LiVOPO4 when used as a ZIB cathode. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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