• Lithium-oxygen cells are a promising power source, and carbons are an attractive non-metal catalyst for air electrodes. To improve the electrochemical performance, various carbons are heated in an inert atmosphere. It is found that heat treatment at 900 C can differently improve the electrochemical performance of multiwalled carbon nanotubes, acetylene carbon black and activated carbon, but the improvement of CNTs is the most obvious. After heat treatment, the peak current density of the oxygen …Read more