Please use this identifier to cite or link to this item:
|Title:||Electrochemical synthesis and supercapacitive properties of ε -MnO2 with porous/nanoflaky hierarchical architectures|
|Authors:||Xiao, W. |
|Citation:||Xiao, W., Xia, H., Fuh, J.-Y.-H., Lu, L. (2009). Electrochemical synthesis and supercapacitive properties of ε -MnO2 with porous/nanoflaky hierarchical architectures. Journal of the Electrochemical Society 156 (7) : A627-A633. ScholarBank@NUS Repository. https://doi.org/10.1149/1.3133247|
|Abstract:||A facile electrochemical method involving a hydrogen coevolution cathodic electrodeposition followed by an in situ electro-oxidation progress has been developed to prepare ε -MnO2 with a porous/nanoflake hierarchical architecture. Characterizations show that the cathodic-electrodeposition process produces porous spinel Mn3 O4, while the subsequent in situ electro-oxidation progress rapidly and completely transforms the spinel Mn3 O4 to the ε -MnO2 in nanoflakes without the destruction of the porous matrix. ε -MnO2 deposits with a porous/nanoflake hierarchical architecture have been found with a high specific capacitance of 320 F g-1 for the 1st cycle (0.125 F cm-2) and 307 F g-1 for the 2000th cycle. The deposits convey an energy density of 24.4 Wh kg-1 at a power density of 4500 W kg-1. The porous manganese oxide with good and stable electrochemical performance can be the promising candidate for supercapacitors. © 2009 The Electrochemical Society.|
|Source Title:||Journal of the Electrochemical Society|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Nov 14, 2018
WEB OF SCIENCETM
checked on Nov 6, 2018
checked on Nov 3, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.