The Role of Fluorine in Polyanionic Cathode Materials for Sodium‐Ion Batteries

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

Published: Feb. 5, 2025

Abstract With the growing global demand for renewable energy and increasing scarcity of lithium resources, sodium‐ion batteries have received extensive attention research as a potential alternative. Among many cathode materials batteries, polyanion are favored their high operating voltage, stable cycling performance, good safety. However, low electronic conductivity density polyanionic limit large‐scale commercial applications. To overcome this challenge, various strategies been explored to improve electrochemical performance. them, fluorine doping has proven be an effective means. In study, we systematically effects trace mass substitution on structure, dynamics, electrochemistry deeply analyzed reaction mechanisms. The analysis results show that can effectively material, thus enhancing its A large amount voltage plateau density. environmental safety challenges associated with introduction should also addressed. Overall, in further optimize structure realizing wide application high‐performance making them competitive battery technology.

Language: Английский

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Lanthanum-doped Na4Fe3(PO4)2P2O7/C as cathode materials in sodium-ion batteries: Enhanced ion diffusion kinetics and embedded pseudocapacitance

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 635, P. 236531 - 236531

Published: Feb. 16, 2025

Language: Английский

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Architecture Engineering for Thick Electrodes in High-Energy Batteries: Challenges and Strategies

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

With the burgeoning demand for smart portable electronic devices and high-performance electric vehicles, there is tremendous urgency to further dramatically improve energy density of rechargeable batteries. Although utilizing thick electrodes a straightforward productive approach, slow reaction kinetics inadequate mechanical strength caused by thickness increase have hampered their development. Therefore, break through bottleneck electrodes, we comprehensively summarize recent progress electrode architecture engineering in field Considering relationship between structure electrochemical performance, focus on four crucial challenges (high tortuosity, electron ion transport, improper porosity, visible cracking) corresponding solutions (constructing vertically aligned hierarchical channels, introducing multidimensional conductive materials, regulating degree calendering, so on) constructing electrodes. Finally, construction strategy inextricable these factors are summarized, an outlook development research directions toward discussed, providing valuable reference designing

Language: Английский

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Synergistic engineering of heterojunction and surface coating to boost Zn storage performance of V2O3-based microspheres as an advanced cathode for aqueous zinc-ion batteries

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1004, P. 175867 - 175867

Published: Aug. 5, 2024

Language: Английский

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The Synergistic Approach of Sol-Gel and Freeze-Drying Techniques in Crafting Lanthanum-Doped Na4fe3(Po4)2p2o7 as Cathode Materials in Sodium-Ion Battery with Enhanced Ion Diffusion Kinetics and Embedded Pseudocapacitance

Published: Jan. 1, 2024

The iron-based hybrid polyanionic compound Na4Fe3(PO4)2(P2O7) is perceived a potential cathode for sodium-ion batteries (SIBs) on account of its high theoretical capacity, resource abundance, nontoxicity and stable framework structure, however, sodium storage capabilities are hindered by sluggish ionic mobility kinetics. This paper reports the successful synthesis porous La-doped materials using sol-gel freeze-drying techniques. La4Fe2.96La0.04(PO4)2(P2O7)/C (NFPP-0.04) showcases remarkable ion mobility, outstanding cycling stability, exceptionally discharge specific capacity. These attributes attributed to enhancement embedded pseudocapacitance electrochemical kinetics through synergistic effect lanthanum doping technology. NFPP-0.04 emerges capacity (128.4 mAh g-1 at 0.2 C, 1 C = 129 g-1) eminent durability (capacity retention 97.2% after 100 cycles C). Furthermore, in situ X-ray diffraction analysis revealed exceptional structural stability NFPP-0.04. Additionally, correlation cyclic voltammetry curves various scan rates confirms that charge/discharge mechanism predominantly relies pseudocapacitance. study highlights feasibility enhancing precise doping. Consequently, as promising candidate cathodes SIBs.

Language: Английский

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Lanthanum-Doped Na4fe3(Po4)2p2o7 Enhanced Embedded Pseudocapacitance and Ion Diffusion Kinetics as High-Performance Cathode Material for Sodium-Ion Batteries

Published: Jan. 1, 2024

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Language: Английский

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Elevating electrochemical performance of Na4MnCr(PO4)3 cathode material for sodium ion batteries through the synergistic effect of Sc doping and RuO2/C coating

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156289 - 156289

Published: Sept. 1, 2024

Language: Английский

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