Dual-site pinning engineering in O3-type layered oxides cathode materials for high-performance sodium-ion batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162805 - 162805

Опубликована: Апрель 1, 2025

Язык: Английский

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Enabling High Reversibility of Both Cationic and Anionic Redox in Layered Oxide Cathodes via NiMn₆ Superlattice Topology for Sodium‐Ion Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 22, 2025

Abstract High‐voltage oxygen anionic redox provides a transformative opportunity to achieve high energy density of batteries. However, it is challenging guarantee the reversibility both cationic and for layered transition metal (TM) oxide cathode materials due oxygen‐redox reactivity complex structural rearrangements. Herein, honeycomb‐layered Na 0.78 Ni 0.12 Li 0.18 Mn 0.7 O 2 (NNLMO) material with NiMn 6 LiMn dual‐topology superlattice proposed sodium‐ion The theoretical experimental studies demonstrate that 2+ electronic configuration serves as buffer tune activity by enlarging gap between p 3 d orbitals, while topology renders delocalized in TM layers reinforce superstructure stability through suppressing intralayer migration formation. As result, NNLMO delivers highly reversible capacity 224 mAh g −1 mitigated voltage hysteresis exhibits remarkable retention 92.2% over 50 cycles within wide range 1.5–4.5 V. findings suggest new insight into topological design high‐energy sustainable

Язык: Английский

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Facile Synthesis of P2/O3 Biphase Integration NaNi0.5Mn0.45Mg0.05O2 as Promising Cathode Material for Sodium-Ion Batteries

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180723 - 180723

Опубликована: Май 1, 2025

Язык: Английский

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Jahn‐Teller Effect in Sodium Layered Oxide Cathodes: Inducement Mechanisms, Mitigation Strategies, and Rational Utilizations

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Abstract The sodium‐layered transition metal oxides (Na x TMO 2 ) are regarded as the promising cathode for sodium‐ion batteries (SIBs) relying on their high theory capacity and cost‐effectiveness. Nevertheless, intrinsic lattice distortions caused by Jahn‐Teller active ions significantly degrade structural stability of Na , generally resulting in unsatisfactory electrochemical properties. In this review, begins introducing inducement mechanisms effect (TM) ions. Subsequently, restraining strategies well corresponding using element doping/substitutions, surface reconstructions, polyphase symbiosis, TM/oxygen/Na + vacancy manipulations summarized detail. Specifically, influences such mitigation deformation properties, phase evolution behaviors, TM dissolution characteristics, crystal comprehensively discussed. Furthermore, sensible utilization distortion is to build cathodes with and/or repaid ion transport kinetics well. end, challenges faced amelioration methods overviewed put forward research directions future trenchantly constrain 6 octahedron deformation. This work will provide more perceptions further studies SIBs.

Язык: Английский

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Phosphate ester bonds acted as nodes: Achieving directional construction of closed pore to elevate sodium storage capacity

Composites Part B Engineering, Год журнала: 2025, Номер unknown, С. 112627 - 112627

Опубликована: Май 1, 2025

Язык: Английский

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