Technical Conditions of Preparation and the Electrochemical Behavior of the Film Electrode of Molybdenum Nitride

The technical conditions of preparation of molybdenum nitride film clectrode by dip- calcination method and the electrochemical behaviors of the electrode were studied. The results show that the optimum technical conditions to prepare the electrode are as follows: the dipping drying temperature is 513～473K, the heating rate for calcinator is 1K·min-1, the calcination time at 990K is 2h, and then the reaction system cools down along with the furnace which is protected by ammonia gas. The formed film electrode is of uniformity and has good adhesiveness with Ti substrate. The curve of cyclic voltammotry of the film electrode shows basically rectangle. The film electrode of molybdenum nitride exhibits a characteristic of capacitor and the reversibility of the kinetics, and shows remarkable stability and reproducibility of discharge/recharge behavior. The potential range of reversible capacitative behavior is -0.22～0.36V (vs SCE). When the sweep- rate of potential is less than or equals 100mV·s-1, the response current density increases with the sweep-rate.