Enhanced supercapacitor performance of NaCrSnNiCeO₂ and NaCuFeNiCeO₂ nanocomposites: a comparative study of electrode materials

New Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Recent advancements have focused on developing innovative and renewable technologies for energy production storage.

Язык: Английский

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Synergistically Boosted Na⁺ Migration and Deep Desodiation Stability of NASICON Cathode via High Entropy Regulation

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Abstract Mn‐containing sodium superionic conductor (NASICON) compounds have shown considerable potential as cathode for sodium‐ion batteries (SIBs) owing to higher working voltage (V 5+ /V 4+ : 3.9 V), lower cost, and toxicity compared full vanadium‐based NASICON Na 3 V 2 (PO 4 ) . Taking 3.3 1.7 Mn 0.3 (NVMP) an example, its practical application is still restricted by poor electronic conductivity, sluggish intrinsic + diffusion, high‐voltage stability. In this work, a high entropy strategy proposed develop 1.613 (Cr, Fe, Co, Ni, Zr) 0.1 (HE‐NVMP) not only enabling more rapid migration but also significantly improving deep desodiation Based on theoretical calculations experimental findings, such modification can efficiently alter the coordination environments of both V/Mn sites reducing diffusion energy barrier, increasing occupancy at Na(2) sites, consolidating structure Thus, obtained HE‐NVMP delivers superior high‐rate capability (91.7 mAh g −1 up 50 C excellent cycling performance (capacity retention: 81.2%) after 10 000 cycles 20 cutoff 4.1 V. More importantly, exhibits storage properties (4.5 V) with electrochemical polarization 75% reduction 1 capacity retention 80.3% 2000 pristine counterpart, indicating great rechargeable overcharge resistance capability.

Язык: Английский

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Cu/Mg substitution enables O3-type NaNi0.4Fe0.2Mn0.4O2 cathode material with simpler phase transition process for sodium-ion batteries

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 178713 - 178713

Опубликована: Янв. 1, 2025

Язык: Английский

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A layer-structured high entropy oxide with highly reversible Fe3+/Fe4+ redox as advanced cathode material for sodium ion batteries

Journal of Power Sources, Год журнала: 2024, Номер 627, С. 235735 - 235735

Опубликована: Ноя. 16, 2024

Язык: Английский

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The effect of sodium content on sodium diffusion in NaxTi0.2Mn0.2Fe0.2Co0.2Ni0.2O2 high-entropy layered oxide

Journal of Solid State Electrochemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Язык: Английский

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Regulated Synthesis of Sodium-Ion Cathode Materials: Two High-Performance Spherical Layered Metal Oxides

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

NaNi1/3Fe1/3Mn1/3O2 (NFM111) is widely used because of its high theoretical specific capacity and excellent environmental adaptability. In our previous study, NFM111 was synthesized by solid-phase ball milling comprehensively evaluated. It found that has NiO in the bulk phase, which may lead to instability structure affect properties material. To solve this problem, we prepared spherical coprecipitation prilling work. The morphology obtained, content peaks reduced. At same time, tap density particles rate performance material are effectively improved. work, advantages disadvantages two methods for preparing materials analyzed comparing their properties. provides some reference subsequent production research NFM111.

Язык: Английский

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Multi-elemental doping modulated P2-type layered cathodes for high performance sodium-ion batteries

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179926 - 179926

Опубликована: Март 1, 2025

Язык: Английский

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High-entropy engineering enables O3-type layered oxide with high structural stability and reaction kinetic for sodium storage

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 137438 - 137438

Опубликована: Март 1, 2025

Язык: Английский

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