Fig. 4From: Carbon and Binder-Free Air Electrodes Composed of Co3O4 Nanofibers for Li-Air Batteries with Enhanced Cyclic Performance a Cyclic performance of the standard and Co3O4-nanofiber electrodes. b Discharge–charge profiles of the standard electrode during cycling. c Discharge–charge profiles of the Co3O4-nanofiber electrode during cyclingBack to article page