Facile Synthesis of Atomic Fe Anchored on Defected Carbon Spheres with High N/S Content for Sodium-Ion Batteries

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146041 - 146041

Published: March 1, 2025

Language: Английский

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Multitrack Boosted Hard Carbon Anodes: Innovative Paths and Advanced Performances in Sodium‐Ion Batteries

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

Published: March 20, 2025

Abstract Sodium‐ion batteries (SIBs) are emerging as a potential alternative to traditional lithium‐ion due the abundant sodium resources. Carbon anodes, with their stable structure, wide availability, low cost, excellent conductivity, and tunable morphology pore exhibit outstanding performance in SIBs. This review summarizes research progress of hard carbon anodes SIBs, emphasizing innovative paths advanced performances achieved through multitrack optimization, including dimensional engineering, heteroatom doping, microstructural tailoring. Each dimension material—0D, 1D, 2D, 3D—offers unique advantages: 0D materials ensure uniform dispersion, 1D have short Na + diffusion paths, 2D possess large specific surface areas, 3D provide e − /Na conductive networks. Heteroatom doping elements such N, S, P can tune electronic distribution, expand interlayer spacing carbon, induce Fermi level shifts, thereby enhancing storage capability. In addition, defect engineering improves electrochemical by modifying graphitic crystal structure. Furthermore, suitable structure design, particularly closed structures, increase capacity, minimizes side reactions, suppress degradation. future studies, optimizing exploring co‐doping, developing environmentally friendly, low‐cost anode methods will drive application high‐performance long cycle life

Language: Английский

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Universal Single Atom Engineering Enhances Coulombic Efficiency of Ion Storage in Carbon Materials

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

Published: March 27, 2025

Metal single atoms are widely used to optimize the microstructure of carbon materials improve their ion storage capacity and rate performance, but impact on another key parameter, Coulombic efficiency (CE), is not sufficiently addressed confirmed. Herein, a universal phenomenon reported that carbon-loaded asymmetric sulfur-modified metal-N4 moiety (MN4-S, M = Zn, Fe, Cu, Ni) possesses higher CE than symmetric MN4 moiety, this applicable various matrices, ions (Li+, Na+, K+), charge discharge rates, electrolyte formulations. The MN4-S exhibits larger CEs (0.03-0.46% average CEs, 4.2-28.4% initial CEs) smaller variance compared implying better reversible stability. mechanism driving revealed by ZnN4-S sodium process. coordination promotes rapid diffusion kinetics changing density. Meanwhile, can reduce adsorption energy regulate surface chemical reactivity material increase reversibility storage, thereby achieving

Language: Английский

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Rationally regulating pore structures of porous carbon anodes by sulfur-doped carbon coating for high-rate sodium-ion storage

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163359 - 163359

Published: April 1, 2025

Language: Английский

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