Abstract
We present here a novel hybrid nano-structured manganese dioxide/activated carbon supercapacitor with lithium hydroxide electrolyte, in which the MnO 2 positive material was prepared using a solid-state reaction route. The electrochemical behaviors of MnO 2 electrodes in 1 M LiOH and 1 M KOH electrolytes, respectively, were characterized by cyclic voltammetry and electrochemical impedance spectroscopy methods. The results indicated that the reaction mechanism of MnO 2 electrode in LiOH electrolyte appears to be Li + ion insertion/extraction in MnO 2 solid, which is different with that electrode in KOH electrolyte. Charge/discharge experiments showed that the rate dischargeability of the MnO 2/AC capacitor with 1 M LiOH electrolyte is excellent, and the cyclic stability of the MnO 2/AC capacitor with 1 M LiOH electrolyte is much better than that with 1 M KOH electrolyte.
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.
