Demonstrates improved electrochemical performance in anode-free batteries using potassium superoxide as an additive, highlighting safety and cost efficiency.
Key Points
This research aims to enhance anode-free potassium-organic batteries by addressing potassium ion scarcity through potassium superoxide additives.
Introduced potassium superoxide (KO2) as a sacrificial cathode additive.
Studied the decomposition mechanism of KO2 and its effects on potassium ion supply.
Developed a cost-effective synthesis route for high-purity KO2.
Achieved a high capacity of 368.9 mAh/g from KO2 with 97.9% theoretical utilization.
Demonstrated a low decomposition overpotential below 190 mV without extra conductive agents.
Showed the batteries retained 84.9 mAh/g after 300 cycles with a high coulombic efficiency of 99.5%.