Constructing Iron Vacancies in Thiospinel FeIn₂S₄ to Modulate Fe D‐Band Center and Accelerate Sodiation Kinetics Enabling High‐Rate and Durable Sodium Storage

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract The bimetallic synergies effect and combined conversion/alloying mechanism endow thiospinel FeIn 2 S 4 with great potential as an anode material for sodium‐ion batteries (SIBs). However, their inconsistent synthesis, severe volumetric expansion, sluggish reaction kinetics typically lead to unsatisfactory cyclic stability rate capability. Herein, organic framework derived @N/S‐C microrods Fe vacancies is presented fast, durable, reversible sodium storage. presence of significantly modulates the d ‐band center decreases strength Fe─S bond facilitating sodiation jointly. Moreover, a thin stable solid electrolyte interface film inorganic‐rich components formed by induction. Combined N, co‐doped porous carbon matrix, optimal sample delivers excellent capability 381 mAh g −1 at 10 A performance (448 after 500 cycles 1 ). Furthermore, assembled full‐cells also exhibit superior electrochemical 87.5% capacity retention long‐term evaluations. This work presents promising strategy structural regulation sulfides advanced anodes SIBs.

Language: Английский

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A Medium‐Entropy NASICON Cathode for Sodium‐Ion Batteries Achieving High Energy Density Through Dual Enhancement of Voltage and Capacity

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Na 3 V 2 (PO 4 ) (NVP) is recognized for its promising commercialization potential as a sodium‐ion battery (SIB) cathode, due to thermodynamic stability and open structure. However, the limited energy density remains major obstacle further advancement of NVP. Herein, medium‐entropy NASICON 3.3 1.4 Al 0.3 (MgCoNiCuZn) 0.06 (NVAMP‐0.3) designed by introducing 3+ , Mg 2+ Co Ni Cu Zn regulate configurational entropy. These NVAMP‐0.3 achieve an elevated average operating voltage (3.33 V) high capacity (138.1 mAh g −1 based on 2.3 + through /V 4+ 5+ multi‐electron reactions. By simultaneously enhancing voltage, exhibits impressive 460 Wh kg . Furthermore, demonstrates excellent low‐temperature tolerance with retention rate 94.6% after 300 cycles at −40 °C. In situ XRD unveils underlying cause unique phenomenon where solid‐solution reaction accounts faster electrochemical kinetics compared redox. DFT calculations indicate that possesses superior electronic conductivity reduced migration barriers. A pouch cell assembled cathode hard carbon anode highly stable cycling (89.3% 200 1 C). This study provides valuable insights into developing NASICON‐type cathodes densities SIBs.

Language: Английский

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Recent Advances in Fast‐Charging Sodium‐Ion Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract Sodium‐ion batteries (SIB), stemming from the abundance of sodium resources and their cost‐effectiveness, have positioning them favorably a potential candidate for stationary energy storage public electric vehicles. As an intermediary grid system output terminals charging station, fast‐charging performance has actually become crucial metric, which greatly relates to station utilization cost‐ time‐efficient. Besides, capacity is also relevant long‐term stable operation transportation. Given remarkable advancements in SIBs reported recently, review about this topic scope timely important at present. In study, bottlenecks are first assessed, after that, comprehensive overview employed strategies improving capacities three aspects: structures design, reaction mechanism regulation, optimization solvation structure interfacial property given. Finally, challenges prospects further research toward proposed. The authors hope will provide deep understanding design principles inspire more endeavors conquer practicability issue fields.

Language: Английский

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Advancements and Challenges in Sodium-Ion Batteries: A Comprehensive Review of Materials, Mechanisms, and Future Directions for Sustainable Energy Storage

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179544 - 179544

Published: March 1, 2025

Language: Английский

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Dynamic Lock‐And‐Release Mechanism Enables Reduced ΔG at Low Temperatures for High‐Performance Polyanionic Cathode in Sodium‐Ion Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract Low‐temperature synthesis of polyanionic cathodes for sodium‐ion batteries is highly desirable but often plagued by prolonged reaction times and suboptimal crystallinity. To address these challenges, a novel self‐adaptive coordination field regulation (SACFR) strategy based on dynamic lock‐and‐release (DLR) mechanism introduced. Specifically, urea used as DLR carrier during synthesis, which dynamically “locks” “releases” vanadium ions controlled release, simultaneously “locking” H + to enhance phosphate group thereby creating that can intelligently respond real‐time demands the system. This behavior contributes both an improvement in kinetics significant reduction Gibbs free energy change ( ΔG ). As result, kinetic efficiency thermodynamic spontaneity are greatly enhanced, enabling efficient high‐crystalline Na 3 V 2 O (PO 4 ) F (NVOPF) at 90 °C within just hours. The as‐prepared NVOPF cathode exhibits exceptional rate performance ultra‐stable cycling stability across broad temperature range. Furthermore, successful kilogram‐scale underscores practical potential innovative strategy. work pioneers chemistry providing transformative insights into material design.

Language: Английский

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A Phase‐Transition–Free Sodium Vanadium Phosphate Cathode via Medium‐Entropy Engineering for Superior Sodium Ion Batteries

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Abstract Na 3 V 2 (PO 4 ) , based on multi‐electron reactions between 3+ /V 4+ 5+ is a promising cathode material for SIBs. However, its practical application hampered by the inferior conductivity, large barrier of and stepwise phase transition. Herein, these issues are addressed constructing medium‐entropy (Na 3.2 1.1 Ti 0.2 Al Cr Mn Ni 0.1 ME‐NVP) with strong ME─O bond highly occupied Na2 sites. Benefiting from effect, ME‐NVP manifests phase‐transition–free reaction mechanism, two reversible plateaus at 3.4 (V 4.0 ), small volume change (2%) during + insertion/extraction processes, as confirmed comprehensive in/ex situ characterizations. Moreover, kinetics analysis illuminates superior diffusion ability ME‐NVP. Thus, realizes remarkable rate capability 67 mA h g −1 50C long‐term lifespan over 10 000 cycles (capacity retention 81.3%). Theoretical calculations further illustrate that weak binding ion in channel responsible rapid diffusion, accounting kinetics. rigid MEO 6 octahedral feasible rearrangement ions can suppress transition, thus endowing an ultrastable cathode. This work highlights significant role engineering advancing output voltage, cycling stability, polyanionic cathodes.

Language: Английский

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A high-entropy zero-strain V-based cathode for high performance aqueous zinc-ion batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: 76, P. 104098 - 104098

Published: Feb. 7, 2025

Language: Английский

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Chromium-doped tunnel-structured VO2(B) nanorods as high-capacity and stable cathode materials for aqueous zinc-ion batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 114, P. 115826 - 115826

Published: Feb. 14, 2025

Language: Английский

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Toward High‐Performance, Flexible, Photo‐Assisted All‐Solid‐State Sodium‐Metal Batteries: Screening of Solid‐Polymer‐Based Electrolytes Coupled with Photoelectrochemical Storage Cathodes

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract The advancement of photo‐assisted rechargeable sodium‐metal batteries with high energy efficiency, lightweight structure, and simplified design is crucial for the growing demand in portable electronics. However, addressing intrinsic safety concerns liquid electrolytes sluggish reaction kinetics existing photoelectrochemical storage cathodes (PSCs) remains a significant challenge. In this work, functionalized light‐driven composite solid electrolyte (CSE) fillers are systematically screened, optimized PSC materials employed to construct advanced solid‐state battery (PSSMB). To further enhance mechanical properties poly(ethylene oxide) compatibility CSE, natural lignocellulose incorporated, enabling fabrication flexible PSSMBs. situ tests density functional theory calculations reveal that electric field facilitated sodium salt dissociation, reduced interfacial resistance, improved ionic conductivity (0.1 mS cm −1 ). Meanwhile, energy‐level matching maximized utilization photogenerated carriers, accelerating enhancing interface between cathode. resulting pouch‐type PSSMB demonstrates remarkable discharge capacity 117 mAh g outstanding long‐term cycling stability, retaining 89.1% its achieving an efficiency 96.8% after 300 cycles at 1 C. This study highlights versatile strategy advancing safe, high‐performance batteries.

Language: Английский

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Direct ink writing to create low-tortuosity structured electrodes for advanced sodium-ion batteries

Journal of Solid State Electrochemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

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