Figure 5
From: Graphene Oxide Induced Surface Modification for Functional Separators in Lithium Secondary Batteries

(a) Photograph and (b) SEM image of the GO-SiO2 coated separator. Water contact angle measurement of (e) GO coated separator and (d) GO-SiO2 coated separator. (e) Cycling performance and (f) Coulombic efficiency of lithium metal secondary batteries using the GO-SiO2 coated separator.