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stretchable SC. (b) SEM image of the buckled CNT film. (c) Photos of buckled CNT film under various deformations. (d) Normalized electrical resistance of the stretchable SC under stretching−releasing cycles at a strain of 200%. (e) CV curves of the fabricated SC at various stretching states.

      Source: Reproduced with permission [66]. © 2016, American Chemical Society.

      2.2.2.3 Stretchable On‐Chip Micro Supercapacitors (MSCs)

      The obtained SWCNT electrodes based MSC array exhibited a capacitance of 100 μ F at the scan rate of 0.5 V s−1, power density of 70.5 kW kg−1 at energy density of 11.5 W h kg−1. It also showed a stable electrochemical performance at the tensile strain of 30% due to the smooth deformation of serpentine interconnections. The MSC array with voltage window of 3 V can easily light a μ‐LED, as shown in Figure 2.9b. Even under bending and stretching, no noticeable degradation can be observed, demonstrating its good mechanical stability and wide application in wearable and portable electronics.

Schematic illustrations of (a) the fabrication procedures for a MWNT/Mn3O4 based planar stretchable MSC. (b) The encapsulation of the MSC. (c) The stretchable MSCs array with embedded liquid metal interconnections. (d) CV curves of the MSC array measured under different types of deformations.

      Source: Reproduced with permission [2]. © 2015, The Royal Society of Chemistry.

Schematic illustrations of (a) fabricating a stretchable MSC array on a PDMS substrate with serpentine interconnects. (b) Photographs of the μ-LEDs lighting test under bent and 30% stretched state.

      Source: Reproduced with permission [39]. © 2013, American Chemical Society.

Schematic illustrations of (a) the fabrication procedures of the stretchable MSC arrays. (b) Optical images of the stretchable MSC array under 
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