@article { author = {Batlle, Anna}, title = {Towards flexible and wearable supercapacitors: A hierarchical approach in material design}, journal = {Advanced Materials Letters}, volume = {8}, number = {12}, pages = {1145-1149}, year = {2017}, publisher = {International Association of Advanced Materials}, issn = {0976-3961}, eissn = {0976-397X}, doi = {10.5185/amlett.2017.1680}, abstract = {Wearable devices requires from macroscopic mechanical properties laying in macro-scale in comparison with chemical processes that requires from material design in the nanoscale. Besides, such reactions and phenomena involves charge transfer, and therefore a charge transducer in mean scale is required. In this paper we propose a flexible and wearable supercapacitor that takes advantage of a conductive fabric current collector that is coated by electrospray with MnO2-decorated carbon nanofibers (CNF). The results point out that a high capacitance is obtained due to the pseudocapacitive reactions in MnO2; moreover, the long and conductive structure of CNF allow transferring charge to conductive fabric, keeping a low equivalent serial resistance (ESR). The results indicate a specific capacitance on fabric collector of (226.40 ± 0.3) F/g, about 10 times higher than on aluminum foil collector, with a similar ESR which indicates a suitable way to wearable devices. The proposed technique is scalable, and can be easily applied in the industry. }, keywords = {supercapacitor,fabric,CNF,MnO2,electrospray}, url = {https://aml.iaamonline.org/article_14960.html}, eprint = {https://aml.iaamonline.org/article_14960_6c9adf32fd20f8b915dd333bf870bff1.pdf} }