Abstract
Design and synthesis of three-dimensional (3D) structured carbon materials are crucial for achieving high-performance supercapacitors (SC) for energy storage. Here, we report the preparation of 3D architectured GN-CNT hybrid as SC electrodes. Controllable growth of carbon nanotubes on graphene sheets was realized through a facile one-pot pyrolysis strategy. The length of the carbon nanotubes could be rationally tuned by adjusting the amount of precursors. Correspondingly, the resulted GN-CNT hybrid showed adjustable electrochemical performance as an SC electrode. Importantly, the GN-CNT exhibited a high specific surface area of 903 m2 g-1 and maximum specific capacitance of 413 F g-1 as SC electrodes at a scan rate of 5 mV s-1 in 6 M KOH aqueous solution. This work paves a feasible pathway to prepare carbon electrode materials with favorable 3D architecture and high performance, for use in energy storage and conversion.
Original language | English |
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Pages (from-to) | 8497-8504 |
Number of pages | 8 |
Journal | ACS applied materials & interfaces |
Volume | 6 |
Issue number | 11 |
DOIs | |
Publication status | Published - 11 Jun 2014 |
Keywords
- 3D architecture
- carbon nanotube
- controllable growth
- graphene
- one-pot strategy
- supercapacitor