ELECTRODE AND ELECTROCHEMICAL CELL

The invention provides an electrode for an electrochemical cell, the electrode comprising at least a first layer comprising a source of nickel and a first electrode material comprising doped cerium oxide of composition Ce(1-x)LnxO(2-0.5x-δ), where x is a doping level of between 0.001 and 0.08, Ln is Gd or Sm, and δ is the degree of oxygen deficiency. Also disclosed are electrochemical cells having such electrodes and stacks of such electrochemical cells. The invention also provides a method for producing an electrode for an electrochemical cell comprising applying an electrode composition as defined above to a substrate and optionally drying and sintering the composition to produce the electrode.