Tunable multi-doped carbon nanofiber air cathodes based on a poly(ionic liquid) for sodium oxygen batteries with diglyme/ionic liquid-based hybrid electrolytes

Abstract

Multi-doped carbon nanofibers are used as self-standing air cathodes in Na–O2 batteries. The synergetic effect of multiple heteroatoms greatly enhances oxygen reduction, and diglyme-based hybrid electrolytes remarkably improve cycling performance.