Matches in SemOpenAlex for { <https://semopenalex.org/work/W3209578873> ?p ?o ?g. }
- W3209578873 abstract "The increasing demand for energy storage is calling for improvements in cathode performance. In traditional layered cathodes, the higher energy of the metal 3d over the O 2p orbital results in one-band cationic redox; capacity solely from cations cannot meet the needs for higher energy density. Emerging anionic redox chemistry is promising to access higher capacity. In recent studies, the low-lying O nonbonding 2p orbital was designed to activate one-band oxygen redox, but they are still accompanied by reversibility problems like oxygen loss, irreversible cation migration, and voltage decay. Herein, by regulating the metal-ligand energy level, both extra capacities provided by anionic redox and highly reversible anionic redox process are realized in NaCr1-y Vy S2 system. The simultaneous cationic and anionic redox of Cr/V and S is observed by in situ X-ray absorption near edge structure (XANES). Under high d-p hybridization, the strong covalent interaction stabilizes the holes on the anions, prevents irreversible dimerization and cation migration, and restrains voltage hysteresis and voltage decay. The work provides a fundamental understanding of highly reversible anionic redox in layered compounds, and demonstrates the feasibility of anionic redox chemistry based on hybridized bands with d-p covalence." @default.
- W3209578873 created "2021-11-08" @default.
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- W3209578873 date "2021-12-03" @default.
- W3209578873 modified "2023-10-05" @default.
- W3209578873 title "Anionic Redox Regulated via Metal–Ligand Combinations in Layered Sulfides" @default.
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- W3209578873 doi "https://doi.org/10.1002/adma.202107353" @default.
- W3209578873 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34738266" @default.
- W3209578873 hasPublicationYear "2021" @default.
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