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. 2015 Sep 4;1(8):e1400198. doi: 10.1126/sciadv.1400198

Fig. 4. 3D graphene-RACNT fiber as the counter electrode for wire-shaped DSSCs.

Fig. 4

(A) Schematic representation of wire-shaped DSSC using 3D graphene-CNT fiber as the counter electrode and the TiO2 nanotube fiber as the photo anode. (B) Schematic drawing for the cross-section view of the wire-shaped DSSC. (C) SEM image of the cross-section view of the wire-shaped DSSC. (D) Photograph of the wire-shaped DSSC sealed in a glass capillary tube. (E) Flexible wire-shaped DSSC sealed in a transparent FET plastic tube. (F) Knot made from the flexible DSSC. (G) Current density–voltage characteristics of DSSCs with graphene wire, CNT wire, Pt wire, or 3D graphene-RACNT fiber as the counter electrode. (H) Nyquist plots of the 3D graphene-CNT fiber and the Pt wire measured in the I−/I3− electrolyte (10 mM LiI + 1 mM I2 + 0.1 M LiClO4 + acetonitrile). (I) Current density–voltage characteristics of DSSCs with the 3D graphene-RACNT wire counter electrode before and after bending.