کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6465598 | 1422952 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Unique GNS/aMWCNT@PANI nanocone arrays are synthesized by an interfacial polymerization.
- Optimal oASC matching GNS/aMWCNT@PDAA anode with GNS/aMWCNT@PANI cathode is achieved.
- As-assembled oASC exhibits superhigh energy density of 96.9 Wh kgâ1.
Nowadays, high energy density is greatly imperative for supercapacitor technologies, which focus on both high-performance electrodes and assembling techniques. Here, we synthesized a promising cathode of graphene/acid-treated carbon nanotubes (GNS/aMWCNT)-supported polyaniline nanocone arrays by an interfacial polymerization, which achieves high specific capacitance of 299 F gâ1 in 1 M tetraethylammonium tetrafluoroborate-acetonitrile (Et4NBF4-AN) with the potential window of â0.6 to 0.8 V (vs. Ag/Ag+). Matching it with GNS/aMWCNT-supported poly(1,5-diaminoanthraquinone) nanoparticles anode, the organic asymmetric supercapacitors (oASCs) are perfectly fabricated. The oASC with anode/cathode mass ratio of 1/1 delivers the highest energy density of 96.9 Wh kgâ1, excellent rate capability (retain 65.6 Wh kgâ1 even at 65.7 kW kgâ1) and superior cycling stability (94.2% retention after 5000 cycles), which is superior or comparable to other Ï-conjugated polymers-based organic supercapacitors.
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Journal: Chemical Engineering Journal - Volume 326, 15 October 2017, Pages 9-16