Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors.

ABSTRACT: Yarn-based supercapacitors having improved performance are needed for existing and emerging wearable applications. Here, we report weavable carbon nanotube yarn supercapacitors having high performance because of high loadings of rapidly accessible charge storage particles (above 90 wt% MnO₂). The yarn electrodes are made by a biscrolling process that traps host MnO₂ nanoparticles within the galleries of helically scrolled carbon nanotube sheets, which provide strength and electrical conductivity. Despite the high loading of brittle metal oxide particles, the biscrolled solid-state yarn supercapacitors are flexible and can be made elastically stretchable (up to 30% strain) by over-twisting to produce yarn coiling. The maximum areal capacitance of the yarn electrodes we

SUBMITTER: Choi C 

PROVIDER: S-EPMC5172384 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature