In the 1980s, when LSI and VLSI flourished, some people were extremely pessimistic about the prospects of aluminium electrolytic capacitors. Subsequently, the facts proved that these views have some worrying flavors: since the mid-1980s, the average annual growth rate of capacitor industry has been above 20%, and the global sales value of capacitors has reached 13 billion US dollars in 1993. Aluminum electrolytic capacitors account for more than one third of the total output value of the capacitor industry. However, with the progress of electronic technology and material manufacturing technology, traditional aluminum electrolytic capacitors are not only under the pressure of the development of electronic technology, but also under the pressure of other types of capacitors to challenge their leading position.

The demand of electronic technology for capacitor miniaturization and chip type makes the traditional aluminum electrolytic capacitor industry more sensitive to pressure. Traditional aluminium electrolytic capacitors use electrolyte as cathode, which greatly hinders the process of chip formation. Laminating is usually in the form of laminated structure and resin encapsulation. How to seal the electrolyte intact has always been a headache for researchers and developers of aluminium electrolytic capacitors. Solid-state semiconductor material Mn02 is used as cathode material for electrolytic capacitors. The development of chip technology is quite rapid, which has posed a certain threat to the market of aluminium electrolytic capacitors. The mature industrial manufacturing technology of carbon fiber cloth with super large specific surface area (2000mZ/g-3000mZ/g) has made the research and manufacture of double-layer capacitors grow rapidly in recent years and become a powerful competitor for ultra-low voltage and low voltage aluminium electrolytic capacitors. EOLC can easily acquire the capacity of Faraday stage, and its energy storage density is higher than that of aluminium electrolytic capacitors. Therefore, in the field of energy storage, the monopoly of aluminium electrolytic capacitors is gradually broken, and it is likely to come to the fore.

With the emergence of metallized paper-based capacitors and metallized film capacitors, paper-based capacitors and plastic film capacitors have taken a historic step in reducing volume and increasing specific capacity. At present, the development of miniaturization and chip of metallized paper and film capacitors is more active, and challenges to low voltage and small capacity aluminum electrolytic capacitors. Similarly, due to the development of low and medium temperature sintering technology and vertical lamination technology, the range of capacitance available for chip ceramic capacitors is gradually expanding, and the market share of low-voltage and small-capacity aluminum electrolytic capacitors is gradually eroded. Although aluminium electrolytic capacitors are facing unprecedented pressures and challenges, it is not necessary to be too pessimistic to conclude that aluminium electrolytic capacitors have come to an end and must be withdrawn from the historical stage. However, the development of new technology and new materials will not only bring opportunities for the development of other types of capacitors, but also open a convenient door for the innovation breakthrough of aluminum electrolytic capacitors. The emergence of organic semiconductor materials and conductive polymer materials and the maturity of their synthesis technology have laid a material foundation for the replacement of aluminium electrolytic capacitors.