Electrode for a spark plug

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An electrode is provided for a spark plug made of a base material and at least one additive material situated in the base material in a dispersedly distributed manner, which is intercalated in the base material, and is a metal oxide, and is characterized by a negative enthalpy of formation greater than 800 kJ/mol O2. The base material is an Au based or an Rh based material or is pure Au or Rh, the proportion of the additive material amounting to between 5 vol. % and 50 vol. %. Alternatively, Pt-based materials or pure Pt are provided as the base material, the proportion of the additive material at average particle diameters of the additive material between 5 μm and 20 μm amounting to between 21 vol. % and 50 vol. % or the additive material being at least one metal oxide from the group of the rare earth metal oxides and/or at least one metal oxide from the group Al2O3, Y2O3, Sc2O3, CaO, SrO, BaO and/or at least one mixed oxide, such as spinel, made up of at least one alkaline earth metal oxide, one rare earth metal oxide, Al2O3, Y2O3 and/or Sc2O3, the proportion of the additive material amounting to between 5 vol. % and 50 vol. %.