钠离子电池正极材料中离子迁移与电子转移的协同优化OA

Sodium-ion batteries(SIBs)have demonstrated enormous application potential in large-scale energy storage systems due to their abundant sodium resources,low cost,and environmental friendliness.The ion migration rate and electron transfer efficiency of cathode materials are key factors determining the rate performance,cycle life,and capacity retention rate of batteries,and synergistic improvement of both is essential to overcoming performance bottlenecks.This paper takes the three mainstream cathode materials of sodium-ion batteries as its research objects,including layered transition metal oxides(LTMOs),polyanionic compounds(PACs),and Prussian blue analogues(PBAs).It systematically reviews the structural basis of ion migration channels and electron transfer pathways in different material systems and thoroughly analyzes their synergistic regulatory mechanisms.Combining the latest research findings,this paper explains,from three dimensions of elemental optimization,structural design,and composite modification,the specific pathways and mechanisms for synergistically enhancing the efficiency of ion channels and the continuity of electronic pathways.It distills universal strategies for designing high-performance SIBs cathode materials,providing a valuable reference for further developing SIBs cathode materials that combine high capacity,exceptional rate performance,and robust stability.