Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 30, Pages 15692-15699Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta02708j
Keywords
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Funding
- Fundamental Research Funds for the Central Universities
- Shanghai Committee of Science and Technology [11nm0501300, 13JC1408700]
- National Natural Science Foundation of China [51472182, 51272179, 51102183]
- National High-Tech R-D Program of China (863 Program) [2013AA031801]
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Vanadium pentoxide (V2O5)/multiwalled carbon nanotube (MWCNT) core/shell hybrid aerogels with different MWCNT contents are controlled synthesized through a facile mixed growth and self-assembly methodology. V2O5 coated MWCNTs from the in situ growth of V2O5 on the surface of acid-treated MWCNTs incorporate with V2O5 nanofibers from the preferred orientation growth of V2O5 in a one-step sol-gel process. These two kinds of one-dimensional fibers self-assemble into a three-dimensional monolithic porous hybrid aerogel. Owing to its high specific surface area, favorable electrical conductivity and unique three-dimensional and core/shell structures, the light weight hybrid aerogel (about 30 mg cm(-3)) exhibits excellent specific capacitance (625 F g(-1)), high energy density (86.8 W h kg(-1)) and outstanding cycle performance (>20 000 cycles). And the optimal content of MWCNTs in hybrid aerogels for the highest-performance supercapacitor is 7.6%.
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