Abstract
The discharge behaviour of Mg 2Ni-type hydrogen-storage alloy electrodes in 6 M KOH is investigated by a.c. impedance at room temperature. Comparative measurements are also performed on an LaNi 5 electrode. The rate-determining step of the discharge process for the magnesium-based hydrogen-storage alloy electrode is dependent on the alloy composition and depth-of-discharge. The unmodified Mg 2Ni has a high charge-transfer and mass-transfer resistance compared with LaNi 5. Additions of yttrium and aluminium in Mg 2Ni reduced considerably both the resistances and, thereby, produce a remarkable improvement in discharge capacity and rate-dischargeability.
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.
