Preparation of sulfur-doped graphene fibers and their application in flexible fibriform micro-supercapacitors
Bin CAI1, Changxiang SHAO2, Liangti QU2, Yuning MENG1(), Lin JIN3()
1. School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, China 2. Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science (Ministry of Education), School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China 3. The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University, Zhoukou 466001, China
A novel type of sulfur-doped graphene fibers (S-GFs) were prepared by the hydrothermal strategy, the in situ interfacial polymerization method and the annealing method. Two S-GFs were assembled into an all-solid-state fibriform micro-supercapacitor (micro-SC) that is flexible and has a high specific capacitance (4.55 mF·cm−2) with the current density of 25.47 μA·cm−2. The cyclic voltammetry (CV) curve of this micro-SC kept the rectangular shape well even when the scan rate reached 2 V·s−1. There is a great potential for this type of S-GFs used in flexible wearable electronics.
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