METHOD FOR SURFACE MODIFICATION OF HYDROGEN STORAGE ALLOY BY USING AN ALKALINE SOLUTION INCLUDING REDUCTANT

摘要

The present invention is reducing the AB ₅ based powder used as a hydrogen storage alloy the hydrogen storage alloy to be precipitation of nickel and cobalt and at the same time be selectively eluted by eluting the ingredients, except the surface of the nickel in the hydrogen storage alloy powder by the alkali treatment with an aqueous alkaline solution to the surface number of high resolution of the hydrogen storage alloy that contains the hydrogen storage alloy surface modification method using the alkaline aqueous solution containing a reducing agent to provide a life , charge and discharge efficiency and low-temperature characteristics are excellent hydrogen storage alloy electrode catalyst by allowing image is formed on the surface of the hydrogen storage alloy , as well as to modify the surface of the powder relate to .