Rechargeable electrochemical cell with a negative electrode comprising a hydrogen absorbing alloy including rare earth component

Abstract From the Canadian patent

A rechargeable electrochemical cell a positive electrode, an alkaline electrolyte and a negative electrode made mainly of a hydrogen absorbing alloy containing a mixture of at least two rare earth elements including Ce whose content relative to the total amount of rare earth elements is less than 40wt% and is preferably 0.1wt% to 12wt% or in the range 0.1-8wt%, which gives still better capacity and life characteristics. Moreover larger, capacity characteristics can be obtained if the negative electrode contains a conductive powder preferably with an average particle diameter of 10µm or less as a subsidiary material.