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

MOF-Derived Hollow Dodecahedral Carbon Structures with Abundant N Sites and Co Nanoparticle-Modified Cu Foil for Dendrite-Free Lithium Metal Battery

Coatings, Journal Year: 2025, Volume and Issue: 15(4), P. 490 - 490

Published: April 20, 2025

In this work, hollow dodecahedral carbon structures with abundant N-doping sites and metal nanoparticles (NC-Co-CNTs) based on MOF-derivative materials were designed prepared as host for lithium to ensure uniform deposition a Cu current collector. NC-Co-CNTs have good electrical conductivity, which ensures fast electron transport Li+ transfer. The nanotubes catalytically derived by Co can promote the distribution of along surface inside cavity, larger electronegativity N-doped lithophilic such effectively adsorb lithium, inducing be deposited in form spherical dendrite-free state, inhibiting growth dendritic improving electrochemical performance battery. Based above advantages, electrodes NC-Co-CNT-based symmetric cells present superior cycling more than 1100 h low overpotential at 1 mAh cm−2/1 mAh·cm−2. Even high density 5 mA cm−2 parameters cm−2, it still cycles up 800 relatively overpotential.

Language: Английский