Trans-interfacial distribution of Se vacancies in Bi 2 Se 3 core and carbon nanofiber matrix enables long-lifespan and ultra-stable sodium storage

Key Points

• Novel material structure enhances sodium-ion batteries' performance and stability.
• Key evidence shows improved reaction kinetics in sodium-ion batteries with this novel design.
• Evaluation of a new core-carbon nanofiber matrix structure for advanced battery applications.
• This work highlights potential for improved battery longevity with novel core materials.