Recent Advances in High‐Entropy Layered Oxide Cathode Materials for Alkali Metal‐Ion Batteries

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 29, 2024

Abstract Since the electrochemical de/intercalation behavior is first detected in 1980, layered oxides have become most promising cathode material for alkali metal‐ion batteries (Li + /Na /K ; AMIBs) owing to their facile synthesis and excellent theoretical capacities. However, inherent drawbacks of unstable structural evolution sluggish diffusion kinetics deteriorate performance, limiting further large‐scale applications. To solve these issues, novel strategy high entropy has been widely applied oxide cathodes AMIBs recent years. Through multielement synergy stabilization effects, high‐entropy (HELOs) can achieve adjustable activity enhanced stability. Herein, basic concepts, design principles, methods HELO are introduced systematically. Notably, it explores detail improvements on limitations oxides, highlighting latest advances materials field AMIBs. In addition, introduces advanced characterization calculations HELOs proposes potential future research directions optimization strategies, providing inspiration researchers develop areas energy storage conversion.

Язык: Английский

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Design High‐Entropy Core‐Shell Nickel‐Rich Cobalt‐Free Cathode Material Toward High Performance Lithium Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Abstract The structural instability of lithium‐based transition metal layered oxides during electrochemical cycling‐exacerbated by phenomena such as dissolution and phase transitions‐induces rapid capacity degradation, thus constraining their applicability in high‐energy‐density lithium batteries. While coating these materials can bolster stability, the employment electrochemically inactive coatings may inadvertently undermine energy storage performance, presenting a significant trade‐off. In response to this challenge, an innovative core‐shell cathode architecture is presented, wherein high entropy doped LiNi 1/6 Mn Al Ti Mo Ta O 2 serves shell nickel‐rich cobalt‐free 0.89 0.11 constitutes core, synthesized through simple two‐step co‐precipitation methodology (designated LHECNM). This high‐entropy preserves core's performance while effectively mitigating transformations ion dissolution, thereby enhancing robustness. Moreover, configuration significantly diminishes barrier for Li + diffusion, facilitating superior transport dynamics. Consequently, LHECNM demonstrates remarkable achieving discharge 201.57 mAh g −1 , commendable rate capability up 5C, impressive 92% retention over prolonged cycling. investigation elucidates promising paradigm design materials, offering profound insights advancement future technologies.

Язык: Английский

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Self‐Grading and Surface‐Preservation to Enhance the Compaction Density and Structural Stability of Li‐Rich Mn‐Based Cathode

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract Li‐rich Mn‐based (LRM) cathode materials are considered promising candidates for next‐generation lithium‐ion batteries due to their high specific capacity and cost‐effectiveness. However, they exhibit deficiencies in volumetric energy density, largely attributable lower compaction which constrains application space‐limited devices such as electric vehicles portable devices. In this study, (NH 4 ) 2 S O 8 surface treatment is proposed enhance the density stability performance of LRM materials. This induces formation Li/O vacancies spinel structure, leading an increase initial Coulombic efficiency (ICE) from 75.62% 89.07%, well discharge 214.2 266.01 mAh g −1 compared with untreated sample. Furthermore, self‐grading generated by crushing particles during process, results enhancement 3.18 cm −3 3145 Wh L , significantly surpassing 2487 commercial The present work provides new perspectives development density.

Язык: Английский

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Three birds with one stone: reducing gases manipulate surface reconstruction of Li-rich Mn-based oxide cathodes for high-energy lithium-ion batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104202 - 104202

Опубликована: Март 1, 2025

Язык: Английский

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Advances in high entropy oxides: synthesis, structure, properties and beyond

Progress in Materials Science, Год журнала: 2024, Номер 148, С. 101385 - 101385

Опубликована: Окт. 10, 2024

Язык: Английский

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High-Entropy Rock-Salt Surface Layer Stabilizes the Ultrahigh-Ni Single-Crystal Cathode

ACS Nano, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 28, 2024

Single-crystalline Ni-rich layered oxides are one of the most promising cathode materials for lithium-ion batteries due to their superior structural stability. However, sluggish diffusion kinetics and interfacial issues hinder practical applications. These intensify with increasing Ni content in ultrahigh-Ni regime (≥90%), significantly threatening viability single-crystalline strategy oxide cathodes. Herein, by developing a high-entropy coating strategy, we successfully constructed an epitaxial lattice-coherent rock-salt layer (∼3 nm) via Zr Al doping on surface LiNi

Язык: Английский

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High-Entropy Approach vs. Traditional Doping Strategy for Layered Oxide Cathodes in Alkali-Metal-Ion Batteries: A Comparative Study

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104295 - 104295

Опубликована: Май 1, 2025

Язык: Английский

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Ferromagnetic and defect-rich Fe3O4-CC nanowires regulating Li2S deposition for stable lithium-sulfur batteries

Journal of Power Sources, Год журнала: 2024, Номер 626, С. 235785 - 235785

Опубликована: Ноя. 11, 2024

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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Customized Design of Biobased Elastomeric Antioxidative Interphase for High‐Voltage Ni‐Rich Cathodes

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 14, 2025

Abstract High‐voltage (≥4.5 V) Ni‐rich cathodes can help advance the development of next generation high‐energy lithium‐ion batteries. However, high voltage used in deteriorates cycling performance due to structural disintegration polycrystalline particles and electrolyte decomposition. Herein, a robust protective layer with high‐voltage tolerance is applied surface address these challenges. The consists crosslinked bio‐based elastomer (CBE) whose main chain connected by saturated bonds, which confers tolerance. CBE an elastic material viscoelastic properties, allowing it serve as energy dissipation that mitigates strain accumulation preserves integrity coated cathode. also shows polarity rapid transport capabilities presence oxygen‐containing components, ensures tight wrapping improves their interfacial reaction kinetics. As anticipated, 4.5 V Li||LiNi 0.6 Co 0.2 Mn O 2 batteries exhibit initial capacity 176.7 mA h g −1 retention rate 79.5% after 400 cycles. This study underscores critical role customized stabilizing at voltages.

Язык: Английский

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