Constructing Anion Solvation Microenvironment Toward Durable High‐Voltage Sodium‐Based Batteries

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

Published: Jan. 26, 2025

Abstract Sodium‐based rechargeable batteries are some of the most promising candidates for electric energy storage with abundant sodium reserves, particularly, sodium‐based dual‐ion (SDIBs) perform advantages in high work voltage (≈5.0 V), high‐power density, and potentially low cost. However, irreversible electrolyte decomposition co‐intercalation solvent molecules at electrode interface under a charge state blocking their development. Herein, high‐salt concentration microenvironment is created proposed by tailoring solvation structures carriers including both cations anions, which maintains highly oxidation‐resistant contact ion pairs aggregates provides conductivity. The tailored structure makes great contribution to protecting graphite cathode from oxidation, co‐intercalation, structural degradation constructing robust cathode‐electrolyte interphase standout electrochemical stability. Based on this, SDIBs achieved an excellent high‐voltage cycling stability 81% capacity retention after 10 000 cycles battery showed improved rate performance 97.4 mAh g −1 maintained 100 C. It identified that regulating anion responsible stable chemistry enhanced reaction kinetics, deep insight into compatibility design between specialized electrodes.

Language: Английский

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A nitrile solvent structure induced stable solid electrolyte interphase for wide-temperature lithium-ion batteries

Chemical Science, Journal Year: 2024, Volume and Issue: 15(34), P. 13768 - 13778

Published: Jan. 1, 2024

Lithium-ion batteries (LIBs) are extensively employed in various fields. Nonetheless, LIBs utilizing ethylene carbonate (EC)-based electrolytes incur capacity degradation a wide-temperature range, which is attributable to the slow Li+ transfer kinetics at low temperatures and solvent decomposition during high-rate cycling high temperatures. Here, we designed novel electrolyte by substituting nitrile solvents for EC, characterized de-solvation energy ionic conductivity. The correlation between carbon chain length of with reduction stability Li+-solvated coordination was investigated. results revealed that valeronitrile (VN) displayed an enhanced lowest unoccupied molecular orbital level energy, helped construct robust SEI interfacial layers improved ion LIBs. VN-based graphite‖NCM523 pouch cells achieved discharge 89.84% 20C rate room temperature. Meanwhile, cell exhibited 3C even temperature 55 °C. Notably, conductivity 1.585 mS cm-1 -50 retained 75.52% 65.12% their -40 °C °C, respectively. Wide-temperature-range have potential be applied extreme environments.

Language: Английский

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Electrolyte Engineering of Hard Carbon for Sodium‐Ion Batteries: From Mechanism Analysis to Design Strategies

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

Published: Dec. 4, 2024

Abstract The hard carbon (HC) anodes with desirable electrochemical performances including high initial Coulombic efficiency, superior rate performance and long‐term cycling play an indispensable role in the practical application of sodium ion batteries (SIBs), which are closely related to electrolytes them matched. Fully analyzing mechanism electrolyte engineering for HC is crucial promoting commercialization SIBs, but still lacking. In this review, correlation between physicochemical properties first summarized. And point out properties, conductivity, de‐solvation energy, interface passivation ability Na + storage HC. Then, formation process, composition, as well structure solid interphase (SEI) on surface mainly discussed, structure‐activity relationship SEI analyzed depth. Moreover, based analysis, relevant design strategies have been Finally, challenges future development directions proposed. This review expected provide professional theoretical guidance contribute rational high‐performance anodes, industrialization SIBs.

Language: Английский

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Engineering the Solid Electrolyte Interphase for Enhancing High-Rate Cycling and Temperature Adaptability of Lithium-Ion Batteries

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The new lithium salt additive prevents the decomposition of VN and promotes formation a SEI film rich in RSO 3 LiF on graphite electrode surface.

Language: Английский

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Practical and Versatile Sodium‐Ion Batteries Realized With Nitrile‐Based Electrolytes

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

Published: Jan. 29, 2025

Abstract Sodium‐ion batteries (SIBs) hold tremendous potential in next‐generation energy storage. However, no SIB has yet achieved simultaneous support for high voltage, rapid charging, and all‐climate adaptability due to electrolyte limitations. This study successfully constructs versatile SIBs using an optimized acetonitrile (AN)‐based electrolyte, which offers excellent high‐voltage tolerance, ionic conductivity, anion‐enriched solvation structure, a wide liquidus temperature range. The engineered solid interphase (SEI) exhibits low resistance exceptional stability, effectively supporting fast temperature‐adaptive operation, long‐term cycling stability. Consequently, this tailored combined with robust SEI, enables hard carbon (HC) anodes achieve reversible capacity of 223 mAh g −1 at rate 5 C. When paired NaNi 1/3 Fe Mn O 2 (NFM) cathode, the HC||NFM full cells operate stably cut‐off voltage 4.15 V, sustaining over 1400 cycles Furthermore, practical 3 Ah pouch cell demonstrates retaining 90.7% its after 1000 cycles, shows adaptability, maintaining 56.4% room‐temperature −60 °C 97.3% retention 350 50 °C. work provides valuable insights developing advanced electrolytes SIBs.

Language: Английский

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Alleviating Self-discharge in Sodium-Ion Batteries via Functional Dual-Salt Electrolytes

Nano Energy, Journal Year: 2025, Volume and Issue: 136, P. 110744 - 110744

Published: Feb. 2, 2025

Language: Английский

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Modulating Na plating morphology via interfacial design to achieve energy-dense and fast-charging sodium-ion batteries

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110777 - 110777

Published: Feb. 1, 2025

Language: Английский

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Challenges and Strategies for Multi‐Electron Reactions in High‐Energy Phosphate‐Based Cathodes for Sodium‐Ion Batteries

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

Published: Feb. 16, 2025

Abstract Sodium‐ion batteries (SIBs) have been considered as promising candidates for large‐scale energy storage systems and low‐speed electric vehicles due to abundant sodium resources low cost. Phosphate‐based cathodes stand out their high voltages, structural stability, superior safety, etc. However, large molecular weight limits the overall capacity, compromising density practical applications. Recent advancements in multi‐electron reactions based on transition metal (TM) ions provide a pathway achieve both stability. This review discusses fundamental principles behind of phosphate‐based from perspectives electrochemistry materials science. The key factors, such conservation matter charge, thermodynamic, kinetic feasibility, are addressed activating regulating reactions, aiming capacity exceeding 170 mAh g −1 . current progress NASICON‐type phosphate is summarized, challenges associated with pyrophosphate mixed analyzed reactions. Finally, future development high‐energy provided.

Language: Английский

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A Review on Supercapacitors: Development Trends, Challenges, and Future Perspectives

Next research., Journal Year: 2025, Volume and Issue: unknown, P. 100228 - 100228

Published: March 1, 2025

Language: Английский

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Achieving Safe and Stable Lithium-Based Batteries via Molecular Dipole Interactions

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1786 - 1794

Published: March 18, 2025

Language: Английский

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