Efficient FeC-CF Cathode Catalyst Based on the Formation/Decomposition of LiO for Li-O Batteries.

Lithium-oxygen batteries have attracted considerable attention in the past several years due to their ultra-high theoretical energy density. However, there are still many serious issues that must be addressed before considering practical applications, including the sluggish oxygen redox kinetics, the limited capacity far from the theoretical value, and the poor cycle stability. This study proposes a surface modification strategy that can enhance the catalytic activity by loading FeC particles on carbon fibers, and the microstructure of FeC particle-modified carbon fibers is studied by multiple materials characterization methods.