Kim, Keon JungLee, Jae Ah (UT Dallas)Lima, Márcio D. (UT Dallas)Baughman, Ray H.Kim, Seon Jeong2018-06-012018-06-012016-03-042046-2069http://hdl.handle.net/10735.1/5816Includes supplementary materialSupercapacitors that are lightweight, mechanically deformable (stretchable, flexible) and electrochemically stable have potential for various applications like portable, wearable, and implantable electronics. Here we demonstrate a stretchable and high-performing hybrid nanomembrane supercapacitor. The hybrid nanomembrane is prepared by vapour phase polymerization (VPP) based nanoscopic PEDOT coating on carbon nanotube sheets (CNS) transferred onto an elastomeric substrate to form a wavy structure. The resulting wavy structured hybrid nanomembrane based supercapacitor exhibits high electrochemical performance and mechanical stretchability, simultaneously. The high specific capacitances and energy density (82 F g⁻¹, 11 mF cm⁻², and 7.28 W h kg⁻¹ at 0% strain) are retained under large mechanical deformation (77 F g⁻¹ and 6.87 W h kg⁻¹ at a biaxial strain of 600%). Moreover, there is only <1% degradation of capacitance ratio after 1000 cycles stretching/releasing and bending/unbending. This high mechanical cyclic stability is shown even during stretching/releasing and bending/unbending measured by dynamic cyclic voltammetry (CV). These results suggest that our supercapacitor is valuable in a wide range of applications that require it to be electrochemically stable under large mechanical deformation, such as strain sensors, wearable electronics and biomedical devices.©2016 The Royal Society of Chemistry. This article may not be further made available or distributed.Carbon nanotubesSupercapacitorsPoly 3,4-ethylenedioxythiophene (PEDOT)Membrane filtersarticleKim, Keon Jung, Jae Ah Lee, Márcio D. Lima, Ray H. Baughman, et al. 2016. "Highly stretchable hybrid nanomembrane supercapacitors." RSC Advances 6(29), doi: 10.1039/C6RA02757A629