Going, Going, Gone? Recent Trends in Technology Teacher Education Programs

The invention relates to lanthanum and nickel based alloys comprising components of the La Ni5 type where the lanthanum and/or nickel are partially substituted, the substituent element comprising a metal M chosen in the VI or VII group of the elements periodic system and this according to an atomic proportion comprised between 0.1 and 2 relative to nickel, and preferably between 0.5 and 1. The invention relates also to hydrogen electrodes made from such an alloy, and to an alkaline electrode type accumulator comprising such an electrode.