title: Porous Co3O4 nanowires derived from long Co(CO3)(0.5)(OH)·0.11H2O nanowires with improved supercapacitive properties.
abstract: Porous Co(3)O(4) nanowires with large aspect ratio have been obtained by annealing long Co(CO(3))(0.5)(OH)·0.11H(2)O precursor nanowires synthesized by a facile hydrothermal method. The results show that the amount of the additive (urea) has an important impact on the morphology of the as-synthesized cobalt-carbonate-hydroxide intermediate, where the uniformity and the overall structure can be controlled by changing the urea concentration. After the heat treatment, the as-obtained phase-pure Co(3)O(4) nanowires with a well retained structure are applied as the electrode material for supercapacitors, and the sample exhibits excellent performance with a high specific capacitance of 240 F g(-1) after 2000 charge/discharge cycles, corresponding to a retention of 98% of the initial capacitance.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
authors.forename: Bao
authors.initials: B
authors.lastname: Wang
authors.forename: Ting
authors.initials: T
authors.lastname: Zhu
authors.forename: Hao Bin
authors.initials: HB
authors.lastname: Wu
authors.forename: Rong
authors.initials: R
authors.lastname: Xu
authors.forename: Jun Song
authors.initials: JS
authors.lastname: Chen
authors.forename: Xiong Wen David
authors.initials: XW
authors.lastname: Lou
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D025802:Electric Capacitance; D004566:Electrodes; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D014867:Water / Q000737:chemistry*
chemical_list: D010087:Oxides; D014867:Water; D003035:Cobalt; C060728:cobalt oxide