Fig. 3

Electrical characteristics of bionic stretchable nanogenerator. a Open-circuit voltage V_oc, b Short-circuit current I_sc, and (c) short-circuit charge quantity Q_sc of BSNG when working underwater (stretched by hand, under 50% strain, at 1 Hz). d V_oc, (e) I_sc, and (f) Q_sc of BSNG when working under different strain (stretched by a linear motor, at 2 Hz). g V_oc, (h) I_sc, and (i) Q_sc of BSNG when working at different frequency (stretched by a linear motor, under 50 % strain). j V_oc of BSNG that lasted for ~50000 cycles stretched by a linear motor (31250 s, under 50 % strain, at 1.6 Hz). The details within 5 s at the beginning, in the middle part and at the end of test are shown in the top small figures, respectively. k Comparison of the V_oc of BSNG before and after placed in normal temperature environment for one month. Source data of (d–f) are provided as a Source Data file. All data in (d–f) are presented as mean ± s.d.