dc.contributor.author | Wang, Fei | |
dc.contributor.author | Yang, Hua | |
dc.contributor.author | Zhang, Yunchuan | |
dc.contributor.author | Zhang, Haimin | |
dc.date.accessioned | 2021-07-07T04:10:51Z | |
dc.date.available | 2021-07-07T04:10:51Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0361-5235 | |
dc.identifier.doi | 10.1007/s11664-017-5417-9 | |
dc.identifier.uri | http://hdl.handle.net/10072/405778 | |
dc.description.abstract | The effect of KH2PO4 on the synthesis of CuBi2O4 microstructures was investigated. The samples were characterized by powder x-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, x-ray photoelectron spectroscopy (XPS) and ultraviolet (UV)-visible diffuse reflectance spectroscopy. It is demonstrated that the use of KH2PO4 leads to the production of highly uniform CuBi2O4 microspheres hierarchically self-assembled by nanoparticles. With increasing the KH2PO4 concentration from 0.5 M to 1.4 M, the average diameter of the resultant microspheres decreases gradually from 3.3 μm to 1.4 μm. However, further increase in the KH2PO4 concentration up to 1.5 M leads to a sudden increase in the average diameter of the resultant microspheres up to 2.3 μm. In addition, a minor amount of bamboo leaf- or pine needle-like structures are visible in the samples prepared at the KH2PO4 concentrations of 1.0–1.5 M. The bandgap energy of the as-prepared samples is measured to be 1.89 eV by UV-visible diffuse reflectance spectroscopy. The electrochemical performance of the samples was investigated by cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy in 2 M KOH electrolyte. Among the hierarchical microspheres, those prepared at the KH2PO4 concentration of 1.4 M deliver a relatively higher specific capacitance due to their smaller size (1284 F g−1 at a current density of 2 A g−1). | |
dc.description.peerreviewed | Yes | |
dc.language | en | |
dc.publisher | Springer Science and Business Media LLC | |
dc.relation.ispartofpagefrom | 4774 | |
dc.relation.ispartofpageto | 4783 | |
dc.relation.ispartofissue | 8 | |
dc.relation.ispartofjournal | Journal of Electronic Materials | |
dc.relation.ispartofvolume | 46 | |
dc.subject.fieldofresearch | Atomic, molecular and optical physics | |
dc.subject.fieldofresearch | Particle and high energy physics | |
dc.subject.fieldofresearchcode | 5102 | |
dc.subject.fieldofresearchcode | 5107 | |
dc.title | KH2PO4-Assisted Synthesis and Electrochemical Performance of Highly Uniform CuBi2O4 Microspheres Hierarchically Self-Assembled by Nanoparticles | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dcterms.bibliographicCitation | Wang, F; Yang, H; Zhang, Y; Zhang, H, KH2PO4-Assisted Synthesis and Electrochemical Performance of Highly Uniform CuBi2O4 Microspheres Hierarchically Self-Assembled by Nanoparticles Journal of Electronic Materials, 2017, 46 (8), pp. 4774-4783 | |
dc.date.updated | 2021-07-07T04:04:37Z | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Zhang, Haimin | |