{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Mahajan H"],"funding":["Ministry of Science and ICT, South Korea"],"pagination":["9112-9120"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8985136"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["12(15)"],"pubmed_abstract":["Metal-oxide nanomaterials have attracted great interest in recent years due to their novel characteristics such as surface effect and quantum confinement. A fascinating Au nanorod (NR)/cuprous oxide core-shell composite (AuNR/Cu<sub>2</sub>O) was directly synthesized using a moderate one-pot facile green redox method and further utilized for energy storage applications in a supercapacitor. The synthesis mechanism is based on the use of reducing agents to form the core shell. The resultant composite was deposited on the surface of nickel foam as a result of redox reactions between Au and Cu <i>via</i> a hydrothermal method. AuNR/Cu<sub>2</sub>O composite nanoparticles (NPs) were characterized using various spectroscopic and microscopic techniques, including UV-vis and X-ray photoelectron spectroscopies, Brunauer-Emmett-Teller surface area analysis, X-ray diffractometry, and transmission electron microscopy. The AuNR/Cu<sub>2</sub>O composite NPs grow <i>via</i> the depositing of a 20-50 nm Cu<sub>2</sub>O shell on an AuNR core with dimensions of 5-20 nm in width and 40-70 nm in length. The as-synthesized AuNR/Cu<sub>2</sub>O composite NPs were effectively used as electrode materials in a supercapacitor, and their electrochemical performance was determined by cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy in 2 M KOH aqueous solution as an electrolyte. The composite NPs showed excellent average specific capacitance of 235 F g<sup>-1</sup> at a current density of 2 A g<sup>-1</sup> and durable cycling stability (96% even after 10 000 cycles). The higher efficiency of the AuNR/Cu<sub>2</sub>O composite NPs can be attributed to the presence of AuNR in the core. The AuNR/Cu<sub>2</sub>O composite NPs exhibit a high surface area and high electrical conductivity, which consequently result in their excellent specific capacitance and outstanding rate as an all-solid-state supercapacitor electrode."],"journal":["RSC advances"],"pubmed_title":["Novel Au nanorod/Cu<sub>2</sub>O composite nanoparticles for a high-performance supercapacitor."],"pmcid":["PMC8985136"],"funding_grant_id":["2021M3H4A6A01048300"],"pubmed_authors":["Mahajan H","Cho S"],"additional_accession":[]},"is_claimable":false,"name":"Novel Au nanorod/Cu<sub>2</sub>O composite nanoparticles for a high-performance supercapacitor.","description":"Metal-oxide nanomaterials have attracted great interest in recent years due to their novel characteristics such as surface effect and quantum confinement. A fascinating Au nanorod (NR)/cuprous oxide core-shell composite (AuNR/Cu<sub>2</sub>O) was directly synthesized using a moderate one-pot facile green redox method and further utilized for energy storage applications in a supercapacitor. The synthesis mechanism is based on the use of reducing agents to form the core shell. The resultant composite was deposited on the surface of nickel foam as a result of redox reactions between Au and Cu <i>via</i> a hydrothermal method. AuNR/Cu<sub>2</sub>O composite nanoparticles (NPs) were characterized using various spectroscopic and microscopic techniques, including UV-vis and X-ray photoelectron spectroscopies, Brunauer-Emmett-Teller surface area analysis, X-ray diffractometry, and transmission electron microscopy. The AuNR/Cu<sub>2</sub>O composite NPs grow <i>via</i> the depositing of a 20-50 nm Cu<sub>2</sub>O shell on an AuNR core with dimensions of 5-20 nm in width and 40-70 nm in length. The as-synthesized AuNR/Cu<sub>2</sub>O composite NPs were effectively used as electrode materials in a supercapacitor, and their electrochemical performance was determined by cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy in 2 M KOH aqueous solution as an electrolyte. The composite NPs showed excellent average specific capacitance of 235 F g<sup>-1</sup> at a current density of 2 A g<sup>-1</sup> and durable cycling stability (96% even after 10 000 cycles). The higher efficiency of the AuNR/Cu<sub>2</sub>O composite NPs can be attributed to the presence of AuNR in the core. The AuNR/Cu<sub>2</sub>O composite NPs exhibit a high surface area and high electrical conductivity, which consequently result in their excellent specific capacitance and outstanding rate as an all-solid-state supercapacitor electrode.","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Mar","modification":"2025-04-19T13:00:04.789Z","creation":"2025-04-19T13:00:04.789Z"},"accession":"S-EPMC8985136","cross_references":{"pubmed":["35424862"],"doi":["10.1039/d2ra00812b"]}}