Figure 4: Electrochemical performance. | Nature Communications

Figure 4: Electrochemical performance.

From: Two-dimensional vanadyl phosphate ultrathin nanosheets for high energy density and flexible pseudocapacitors

Figure 4

(a) Schematic illustration of an as-fabricated flexible ultrathin-film pseudocapacitor, in which the VOPO4/graphene hybrid layers function as the working electrode and PVA/LiCl gel functions as the electrolyte. (b) CV curves of VOPO4/graphene hybrid film in PVA/LiCl electrolyte from 0 to 1.2 V at 0.1 mV s−1. (c) Galvanostatic cycling behaviour of the as-fabricated FUPA and its IR drop. (d) Galvanostatic charge–discharge curves at different current density of 0.2, 0.4, 0.6 and 1 A m−2. (e) Cycle test of the VOPO4/graphene hybrid film-based FUPA over 2,000 cycles. (f) Cycling stability of the FUPA under repeated bending/extending deformation.

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