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dc.contributor.authorWang, Fei
dc.contributor.authorYang, Hua
dc.contributor.authorZhang, Yunchuan
dc.contributor.authorZhang, Haimin
dc.date.accessioned2021-07-07T04:10:51Z
dc.date.available2021-07-07T04:10:51Z
dc.date.issued2017
dc.identifier.issn0361-5235
dc.identifier.doi10.1007/s11664-017-5417-9
dc.identifier.urihttp://hdl.handle.net/10072/405778
dc.description.abstractThe 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.peerreviewedYes
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofpagefrom4774
dc.relation.ispartofpageto4783
dc.relation.ispartofissue8
dc.relation.ispartofjournalJournal of Electronic Materials
dc.relation.ispartofvolume46
dc.subject.fieldofresearchAtomic, molecular and optical physics
dc.subject.fieldofresearchParticle and high energy physics
dc.subject.fieldofresearchcode5102
dc.subject.fieldofresearchcode5107
dc.titleKH2PO4-Assisted Synthesis and Electrochemical Performance of Highly Uniform CuBi2O4 Microspheres Hierarchically Self-Assembled by Nanoparticles
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationWang, 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.updated2021-07-07T04:04:37Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhang, Haimin


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