Abstract
Defect and interface engineering on heterostructured electrode materials is an effective approach to improve the electrochemical performance of supercapacitors and water-splitting. Herein, we have prepared MXene nanosheets-tagged hetero atom-doped graphitic carbons wrapped CoSe2 (MXe-F,N-gCW-CoSe2) polyhedral heterostructure electrode material, and further investigated kinetic and thermodynamic factors that affect on defect and interface engineering to facilitate efficient electron and ionic path and promote the electrochemical active sites. The composites exhibit excellent hydrogen evolution reaction (HER) performances of the Tafel slope of 84.2 mV dec−1 and 94.5 mV dec−1 in 1 M KOH and 0.5 M H2SO4, respectively. It also shows a high specific capacity of 403.4C g−1 at 1 A g−1 and the thus-assembled MXe-F,N-gCW-CoSe2//AC hybrid supercapacitor revealed an energy density of 44.2 Wh kg−1 at a power density of 851.3 W kg−1 with superior stability of ∼94% after 10,000 cycles.
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.
