Journal
INORGANIC CHEMISTRY FRONTIERS
Volume 5, Issue 1, Pages 172-182Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7qi00583k
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Funding
- National Natural Science Foundation of China [21301042, 51361009, 51461014]
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NiCo2O4 nanoflowers were synthesized through a microwave-assisted hydrothermal method and used as a type support for Ni(OH)(2) nanoparticles. In the three-dimensional NiCo2O4 nanoflowers, twodimensional ultrathin nanosheets supported the Ni(OH)(2) nanoparticles by homogeneous precipitation. The materials were characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical oxidation of methanol was probed through the NiCo2O4/Ni(OH)(2) modification on a glassy carbon electrode in an alkaline medium by employing cyclic voltammetry (CV) and chronoamperometry (CA). The current density of the NiCo2O4/ Ni(OH)(2) electrode in 1 M KOH with 0.5 M methanol ascends to 92.3 A g(-1) and restores to 94.6% of the primitive value through the replacement with a new solution after a long-term CV cycling (500 cycles). Therefore, the compounds further corroborate their excellent electrocatalytic activity and superb perennial stability for methanol oxidation. This study demonstrates that NiCo2O4/ Ni(OH)(2) is a peculiar material with an outstanding performance in direct methanol fuel cells.
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