Abstract
Layered double oxides (LDOs) samples derive from layered double hydroxides (LDHs) by thermal treatment at different temperatures are prepared in this paper. The as-prepared LDOs samples are characterized by X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA) and scanning electron microscope (SEM) technique. The results show that the LDHs are decomposed to ZnO with amorphous aluminium species dispersed in the lattice. After calcinations, LDOs inherit the lamellar structure of LDHs. LDOs with thermal treatment at different temperature are tested as the anode active materials for Zn/Ni secondary battery. Cyclic voltammetries (CV) and Tafel curves measurements reveal that the calcined products have better electrochemical performances, lower polarization and better reversibility. Galvanostatic charge/discharge shows that the calcined products have excellent cycle stability and higher specific discharge capacity. More interesting, the sample calcined at 500°C exhibits the best electrochemical performances among all samples. These findings promote new opportunities for anode materials as Zn/Ni batteries and other energy-storage devices.
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.
