Using High‐Entropy Configuration Strategy to Design Spinel Lithium Manganate Cathodes with Remarkable Electrochemical Performance

Small, Год журнала: 2025, Номер 21(7)

Опубликована: Янв. 6, 2025

Abstract Owing to its abundant manganese source, high operating voltage, and good ionic diffusivity attributed 3D Li‐ion diffusion channels. Spinel LiMn 2 O 4 is considered a promising low‐cost positive electrode material in the context of reducing scarce elements such as cobalt nickel from advanced lithium‐ion batteries. However, rapid capacity degradation inadequate rate capabilities induced by Jahn–Teller distortion dissolution have limited large‐scale adoption spinel for decades. In this study, 1.98 Mg 0.005 Ti Sb Ce (HE‐LMO) with remarkable interfacial structural cycling stability developed based on complex concentrated doping strategy. The initial discharge retention HE‐LMO are 111.51 mAh g −1 90.55% after 500 cycles at 1 C. as‐prepared displays favorable stability, significantly surpassing pristine sample. Furthermore, theoretical calculations strongly support above finding. has higher more continuous density states Fermi energy level robust bonded electrons among Mn─O atom pairs. This research contributes field high‐entropy modification establishes facile strategy designing manganese‐based batteries (LIBs).

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 stabilized O3-type NaNi0.3Fe0.2Mn0.2Ti0.15Sn0.15O2 cathode material for sodium-ion batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160309 - 160309

Опубликована: Фев. 1, 2025

Язык: Английский

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Integrating Morphology Modulation and High Entropy Engineering to Unlock Excellent Lithium Storage Performance

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Zinc Ion Transport Kinetics in Zinc‐based Batteries and Its Regulation Strategy

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Abstract Rechargeable zinc‐ion batteries (ZIBs) have gained significant attention as potential next‐generation energy storage systems, owing to their inherent safety, environmental benignity, and cost‐effectiveness. However, the substantial electrostatic repulsion of Zn ion results in a sluggish kinetics for its insertion into cathode material. Meanwhile, formation hydrated ionic groups with increased mass volume aqueous electrolyte further hampers transport ability zinc ions, significantly impacting overall electrochemical performance (including capacity, density, rate‐capability, cyclability) batteries. This review systematically summarized recent progress regulation strategy kinetics. The as‐reported mechanisms are introduced ZIBs (Zn 2+ insertion/extraction mechanism, H + or 2 O/ co‐insertion/extraction conversion reaction coordination mechanism). Then, material design fast including soft lattice construction, doping effects, defect introduction, morphology control, interface is summarized. Finally, it concluded future research directions, such high‐entropy design, multi‐scale simulation, machine study, providing roadmap developing high‐performance at ultralow operation temperatures.

Язык: Английский

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Immobilizing Single Atom on High-Entropy Oxides as Separator Regulators for Catalyzing Low-Temperature Lithium-Sulfur Battery

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104228 - 104228

Опубликована: Апрель 1, 2025

Язык: Английский

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High-Voltage Sodium Layered Cathode Stabilized by Bulk Complex-Composition Doping to Surface Phosphate Coating Design

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 6, 2025

Layered oxides are considered promising cathode materials for sodium-ion batteries (SIBs) due to their high energy density, flexible compositions, and low cost. However, they encounter significant challenges, such as multiphase transitions structural instability at voltages, which limit large-scale practical application. In this study, we employed a dual modification strategy involving complex composition doping phosphate coating fabricate the Na0.67Ni0.255Mn0.645(TiMgCuZn)0.1O2@phosphate (D-NNM). The lattice distortion induced by optimizes overall properties of cathode, while forms robust electrode interface through stable P-O bonds. This comprehensive stabilizes phase interfacial structure, thereby enhancing Na+ transport mitigating mechanical degradation surface reactions voltages. Consequently, D-NNM exhibited an initial capacity 136.9 mA·h·g-1 with average potential 3.45 V maintained 85% after 60 cycles 4.4 V, twice that pristine cathode. demonstrated faster diffusion kinetics voltage without any particle cracks observed even 50 cycles. offers protection layered from bulk provides insights into design density cathodes SIBs.

Язык: Английский

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A new catalytic merit for prediction catalytic potential of 2D materials in Li-O2 batteries: Theoretical investigation and experimental identification

Journal of Materiomics, Год журнала: 2025, Номер unknown, С. 101060 - 101060

Опубликована: Апрель 1, 2025

Язык: Английский

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One-Step Bimetallic Doping Strategy: Achieving Structural Stabilization and Performance Enhancement of Ultrahigh Nickel Cobalt-Free Cathode Materials

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Язык: Английский

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Hollow/Mesoporous Spherical La(Cr0.2 Fe0.2Co0.2Ni0.2Mn0.2)O3 High-entropy Oxide Anode toward Ultrafast and Stable Lithium Storage

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 142496 - 142496

Опубликована: Апрель 1, 2025

Язык: Английский

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