Abstract
In this paper, during electrodeposition of electrolytic manganese dioxide (EMD) by anodic deposition from MnSO 4 solution, the changing of pH is studied. The pH shows a decreasing trend. Two samples are electrodeposited at fixed pH (2 and 5) and their physico-chemical properties are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), the Barrett–Joyner–Halenda (BJH) method, and rechargeable alkaline manganese dioxide (RAM) battery tests. The results have confirmed that the pH of the solution has remarkable effects on the nanostructure, crystal structure, porosity, and the electrochemical performances of the EMD. Whereas the electrodeposition at pH 2 creates irregular multi-branched morphology with meso/microporosity, a large number of regular nanospheres with microporosity are obtained at pH 5. The battery tests study has revealed that α/γ-MnO 2 electrodeposited at pH 2 exhibits good electrochemical performances, and the α-MnO 2 displays very stable cycling behavior.
Sign-in/Register to access full text options 
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.
