The study addresses the limitations of carbon anodes in potassium-ion batteries (PIBs) due to slow potassium transport, highlighting the need for better ion/electron transfer channels.
Researchers developed cross-linked porous carbon nanofibers with modified oxygen-containing functional groups, which resulted in improved charge/discharge rate capabilities and excellent cycling stability.
The novel anode showcased superior performance metrics, including high power density in a full cell configuration, and demonstrated effective potassium storage through enhanced ion transport and adsorption sites provided by carboxyl groups.