Formation and Variation of the Superstructure of Cation Ordering in Layered Cathode Materials DOI

Yilin Tai,

Guojie Chen, Yangsheng Li

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

This study employs aberration-corrected transmission electron microscopy to provide definitive evidence of cation ordering within the superstructure LiNi0.5Co0.2Mn0.3O2 (NCM523), a prominent Ni-rich ternary cathode material, characterized by wave vector q = 1/3(2a* – b*). We show that this can be enhanced through controlled heating. Comparative analysis LiNixCoyMnzO2 samples with different compositions revealed Mn ions are crucial for formation. The battery performance test shows has no obvious effect on voltage platform during charge–discharge cycle, but negative cycle and structural stability. elucidates origin detrimental effects superstructures, advancing understanding their impact performance, which is vital future development materials.

Language: Английский

Formation and Variation of the Superstructure of Cation Ordering in Layered Cathode Materials DOI

Yilin Tai,

Guojie Chen, Yangsheng Li

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

This study employs aberration-corrected transmission electron microscopy to provide definitive evidence of cation ordering within the superstructure LiNi0.5Co0.2Mn0.3O2 (NCM523), a prominent Ni-rich ternary cathode material, characterized by wave vector q = 1/3(2a* – b*). We show that this can be enhanced through controlled heating. Comparative analysis LiNixCoyMnzO2 samples with different compositions revealed Mn ions are crucial for formation. The battery performance test shows has no obvious effect on voltage platform during charge–discharge cycle, but negative cycle and structural stability. elucidates origin detrimental effects superstructures, advancing understanding their impact performance, which is vital future development materials.

Language: Английский

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