A description is given of an electrode (2) for electrochemically machining electroconductive workpieces (1), which electrode is provided with electrically insulating layers (4, 4') of a hybrid inorganic polymeric material on the basis of silicon oxide and zirconium oxide obtained by means of a sol-gel process. The insulating layers (4, 4') can be provided on the electrode at a low temperature and exhibit a small leakage current.
