Abstract
Novel and hollow-structured bimetallic oxide (NiCo2O4) anchored on nitrogen-doped graphene (NG) has been manufactured by a hydrothermal-calcination method. The ultrafine hollow-structured NiCo2O4 nanorod can be dexterously grafted on an N-doped graphene surface (NiCo2O4/NG) by regulating the alkali sources. The obtained NiCo2O4/NG composite shows much larger specific capacitance and stability according to the cyclic voltammetry (CV) measurements and galvanostatic charge-discharge (GCD) examinations. The electrochemical measurements show that NiCo2O4/NG-H3 composite exhibited a high specific capacitance of 2147.4 F g−1 at 1 A g−1, as well as perfect cycling stability (93.7% capacitance retention after 2000 cycles), indicating a potential application in electrochemical supercapacitors. The XPS spectra of NiCo2O4/NG-H3 further reveal that the excellent performance should be attributed to the electron-donating (synergistic effect) between NiCo2O4 and NG.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
