Rapid oxidation-etching synthesis of low-crystalline δ-MnO2 tubular nanostructures under ambient with high capacitance.
J Colloid Interface Sci
; 557: 168-173, 2019 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-31521966
The 1D low-crystalline and ultrathin MnO2-RT nanotubes consisted of tiny nanoflakes are rapid synthesized at ambient temperature through a facile oxidation-etching method, where Cu nanowires are served as sacrificial templates. Meanwhile, the MnO2-RT nanotubes can be undergone further nucleation and growth to generate 3D porous MnO2 nanotubes by calcination treatment and hydrothermal reaction, respectively. Importantly, the high specific capacitance of 384.6â¯Fâ¯g-1 is obtained at the current density of 0.25â¯Aâ¯g-1 for the low-crystalline MnO2-RT nanotubes, owing to its ultra-thin wall thickness, high surface area and highly disordered structure. Furthermore, the cycle stability of the low-crystalline MnO2 nanotubes can be improved by hydrothermal treatment, owing to the enhanced crystallinity.
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MEDLINE
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En
Revista:
J Colloid Interface Sci
Ano de publicação:
2019
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Article