Constructing layered/tunnel interlocking oxide cathodes for sodium-ion batteries based on breaking Mn3+/Mn4+ equilibrium in Na0.44MnO2 via trace Mo doping

Composites Part B Engineering, Год журнала: 2024, Номер 284, С. 111664 - 111664

Опубликована: Июнь 28, 2024

Язык: Английский

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Expediting layered oxide cathodes based on electronic structure engineering for sodium-ion batteries: Reversible phase transformation, abnormal structural regulation, and stable anionic redox

Nano Energy, Год журнала: 2024, Номер 128, С. 109905 - 109905

Опубликована: Июнь 21, 2024

Язык: Английский

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Stabilizing Layered Oxide Cathodes Based on Universal Surface Residual Alkali Conversion Chemistry for Rechargeable Secondary Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Layered transition metal oxides (LTMOs) are attractive cathode candidates for rechargeable secondary batteries because of their high theoretical capacity. Unfortunately, LTMOs suffer from severe capacity attenuation, voltage decay, and sluggish kinetics, resulting irreversible lattice oxygen evolution unstable cathode-electrolyte interface. Besides, accumulate surface residual alkali species, like hydroxides carbonates, during synthesis, limiting practical application. Herein, a universal strategy is suggested to in situ convert into stable polymer coating layer LTMOs, thus turning wastes treasure. The formation process involves NH4F treatment consume alkali, then utilizing generated fluorides induce the ring-opening polymerization tetrahydrofuran. Implementing this Li-rich Mn-based materials (LRM) results notable reduction hysteresis, along with enhanced kinetics cycling stability lithium-ion batteries. With encapsulation, release layered-to-spinel phase LRM significantly alleviated minimal mechanical degradation parasitic reactions. Such can also be applied air-sensitive sodium-rich sodium-ion batteries, which showcases superior universality. This work might provide promising solution overcome interfacial instability issues

Язык: Английский

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A Universal Strategy for Bridging Prussian Blue Analogues and Sodium Layered Oxide Cathodes: Direct Fast Conversion, Dynamic Structural Evolution, and Sodium Storage Mechanisms

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A universal strategy is proposed to convert unqualified Prussian blue analogues (PBAs) into sodium layered oxide cathodes via a fast sintering process, achieving both economic and environmental benefits.

Язык: Английский

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Promoting Layered Oxide Cathodes Based on Structural Reconstruction for Sodium‐Ion Batteries: Reversible Phase Transition, Stable Interface Regulation, and Multifunctional Intergrowth Structure

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 21, 2024

Abstract Layered transition‐metal oxides (Na x TMO 2 ) are one of the most promising cathode materials for sodium‐ion batteries due to their high theoretical specific capacities, good conductivity, and environmental friendliness. However, several key scientific issues Na still persist in practical applications: i) complex phase transitions during charge/discharge process owing slip layer; ii) tendency interface react with electrolyte, resulting structure degradation, iii) reactions between active H O as well CO on exposure air environment form alkaline substances surface. To understand electrochemical storage mechanisms solve these problems, modification strategies have been reported recently, including bulk doping, concentration gradient design, regulation, intergrowth construction. This review focuses reversible transitions, stable multifunctional material from inside outside. The future research directions also analyzed, providing guidance development commercial layered next‐generation energy systems.

Язык: Английский

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Kinetically controlled synthesis of low-strain disordered micro–nano high voltage spinel cathodes with exposed {111} facets

Chemical Science, Год журнала: 2024, Номер 15(29), С. 11302 - 11310

Опубликована: Янв. 1, 2024

A micro–nano spherical spinel LiNi 0.5 Mn 1.5 O 4 cathode material with highly exposed {111} facets has been designed. This unique structure could inhibit manganese dissolution, facilitate Li + diffusion, and mitigate volumetric strain during cycling.

Язык: Английский

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Cation migration of layered oxide cathodes for sodium-ion batteries: fundamental failure mechanisms and practical modulation strategies

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

We comprehensively review the research advances in cation migration of sodium layered oxides, systematically revealing fundamental mechanisms and practical modulation strategies for irreversible leading to battery failure.

Язык: Английский

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Layered Oxide Cathode Materials for Sodium-Ion Batteries: A Mini-Review

Energy & Fuels, Год журнала: 2024, Номер 38(19), С. 18227 - 18241

Опубликована: Сен. 20, 2024

Язык: Английский

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Mn-based tunnel-structured Na_0.44MnO₂ cathode materials for high-performance sodium-ion batteries: electrochemical mechanism, synthesis and modifications

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Sodium-ion batteries (SIBs) have emerged as promising and mature alternatives to lithium-ion (LIBs) in the post-LIB era, necessitating development of cost-effective high-performance cathode materials. The unique crystal texture Mn-based tunnel-structured materials offers outstanding cycling stability, rate capability air making them a highly attractive option for sodium-ion storage applications. This comprehensive review summarizes recent advancements understanding mechanism, synthesis techniques, modification strategies materials, thereby significantly contributing advancement cathodes SIBs.

Язык: Английский

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Enhancing Sodium Ion Battery Performance through Biphasic Layered Oxide Cathodes

ChemElectroChem, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Biphasic layered cathodes represent a strategic advancement in overcoming the inherent limitations of single‐phase materials by synergistically integrating distinct phase characteristics. Among these, P2/O3 biphasic cathode stands out due to its integration rapid diffusion kinetics P2 with high capacity O3 phase, resulting superior battery performance. Given critical role ratio determining performance cathodes, this work systematically examines influence synthesis methods, sintering temperatures, and sodium dopant compositions on modulation. A comprehensive analysis kinetic thermodynamic properties is conducted, findings correlated electrochemical data elucidate how stability efficient contribute enhanced functionality. Finally, brief overview other provided, comparing their distinctive relative those system.

Язык: Английский

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