1. Technical characteristics: Excellent antibacterial and corrosion properties; long electrode life; with high current density, high current efficiency and high efficiency. Operating current density: 10000A/M2 belongs to the oxygen evolution anode based on industrial pure titanium.
2. High catalytic activity: The platinum-plated electrode is an electrode with high peroxide potential (1.663V vs. mercurous sulfate), which is well known. The MMO anode is a low oxygen evolution overcharged (1385V relative to mercurous sulfate) electrode, and the anode oxygen evolution zone is more prone to oxygen evolution. Therefore, during electrolysis, the cell voltage is relatively low, which saves more power. This phenomenon has clearly manifested itself in alkaline copper-plated walls after copper foil disposal.
3. No pollution. MMO The oxide is a fairly stable oxide, and the anode coating is a ceramic oxide of the noble metal iridium. It is almost insoluble in any acid and alkali, and the oxide coating is about 20-40 μm. The overall coating oxide content is small. Therefore, the MMO anode will not pollute the electroplating solution, which is basically the same as the platinum-plated electrode.
4. Cost-effective: The price of MMO anodes is about 80% of that of platinum-plated electrodes. MMO electrodes have better electrochemical stability in alkaline copper electroplating electrolytes, and have maintained the same service life of platinum-plated electrodes (coating thickness 3.5mm) .At the same time, it has excellent electrolytic activity and durability.)
5. The chloride in the sulfuric acid electrolyte exists in this current environment. The use of dimensionally stable anodes can prevent this phenomenon and enable the insoluble anode technology to successfully achieve performance advantages in this application.
6. Anode maintenance is less. There is no need to stop production to clean and replenish anodes, replace anode bags and re-plating anodes (increased productivity and reduced labor rate).
7. The life of the insoluble anode depends on the type, operating current density, and contact with various electroplating chemicals; because copper ions tend to concentrate on the edge of the hole (high current density area) and quickly accumulate, while the central part of the hole (ie, low current Density area) The accumulation rate is relatively slower. This leads to an extremely uneven distribution of copper: the behavior is called “dog bone shape”. Dog bone shape will appear when operating at moderate current density, tube cracking will occur at lower current density, and operation at higher current density will be There is a burning phenomenon. It is undoubtedly a heavy impact for electroplated circuit boards. The platinum-titanium insoluble anode is used in sulfuric acid electrolyte, and the reverse pulse electroplating anode is also born. Chloride exists in this current environment and will peel off the platinum layer after a period of time.