A simple and useful technique for preparing an oxidation-resistant film on a Pb electrode is reported By dipping a Pb electrode into a mixed solution of 1% ascorbic and 5% boric acids at 40 degrees C and then drying in air, the film was coated on the surface to protect the Pb electrode from oxidation EPMA results clearly showed that no oxidation of the Pb surface took place even after one week in air. In addition, the discharge curve of a Pb plate treated with the reported method was as good as that obtained from conventional methods