3 years ago

Interface-Confined High Crystalline Growth of Semiconducting Polymers at Graphene Fibers for High-Performance Wearable Supercapacitors

Interface-Confined High Crystalline Growth of Semiconducting Polymers at Graphene Fibers for High-Performance Wearable Supercapacitors
Sung Hwan Koo, Sang Ouk Kim, Hong Ju Jung, Kyung Eun Lee, Suchithra Padmajan Sasikala, In Ho Kim, Ho Jin Lee, Joonwon Lim
We report graphene@polymer core–shell fibers (G@PFs) composed of N and Cu codoped porous graphene fiber cores uniformly coated with semiconducting polymer shell layers with superb electrochemical characteristics. Aqueous/organic interface-confined polymerization method produced robust highly crystalline uniform semiconducting polymer shells with high electrical conductivity and redox activity. When the resultant core–shell fibers are utilized for fiber supercapacitor application, high areal/volume capacitance and energy densities are attained along with long-term cycle stability. Desirable combination of mechanical flexibility, electrochemical properties, and facile process scalability makes our G@PFs particularly promising for portable and wearable electronics.

Publisher URL: http://dx.doi.org/10.1021/acsnano.7b05029

DOI: 10.1021/acsnano.7b05029

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