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XAS data (averaged and rebinned)
No full textCollected XAS spectra (averaged and rebinned) for the Paper: "In situ mapping of iron oxidation in laminar metal fuel flames using X-ray absorption spectroscopy
Kinetics and interfacial processes during the recrystallization of calcite and barite, and their influence on radionuclide incorporation
No full textImmobilizing single atom on high-entropy oxides as separator regulators for catalyzing low-temperature lithium-sulfur battery
No full textHollowed and perforated fins in latent heat storage units for High-Temperature hybrid thermal energy storage applications
No full textRevisiting high-valence dopant mechanisms in Ni-rich cathodes: cation ordering dominates over morphological alignment for enhanced stability
No full textLayered ultra-high-nickel oxides are promising cathodes for high-energy-density lithium-ion batteries but suffer from severe structural degradation. Although high-valence doping is widely employed to enhance stability, the underlying mechanism—whether dominated by morphological alignment or cation ordering—remains contested. Through systematic investigation of W-doped LiNiCoMnO across varied doping concentrations and sintering temperatures, this work demonstrates that cation ordering, rather than morphological alignment, plays the decisive role in electrochemical enhancement. Although W-doping refines primary particles and sustains a radial microstructure even under extreme sintering conditions (up to 850 °C), correlation analysis reveals that cycling stability and specific capacity depend strongly on the suppression of Li/Ni cation mixing, while showing only weak correlation with grain morphology. The 0.75 mol% W doped cathode calcined at 800 °C delivered a high specific capacity of 244.3 mAh g and exceptional long-term cyclability, retaining 91.53% capacity after 1000 cycles in full cells. These findings clarify that high-valence dopants enhance performance primarily via lattice stabilization through cation ordering and highlight the necessity of co-optimizing doping content with synthesis temperature. This work revises the conventional understanding of high-valence doping mechanisms by establishing cation ordering as the primary factor for stability, providing a generalizable principle for designing next-generation ultra-high-nickel cathodes
