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Research Progress of Valve Metal Compound in High Specific Capacitance Aluminum Electrolytic Capacitors
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Affiliation:

Xi''an Jiaotong University

Clc Number:

O647

Fund Project:

The National Natural Science Foundation of China (Granted no. 51777152), the Natural Science Foundation of Shaanxi Province (Granted no. 2019JLZ-09, 2020JM-027) and the Fundamental Research Funds for the Central Universities (Granted no. XJJ2018055)

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    Abstract:

    To meet the development trend of functionalization and miniaturization of electronic products in recent decades, aluminum electrolytic capacitors are facing the same trend to achieve miniaturization and high electrical properties.SOne of the most effective ways to make it actualize is the preparation of high specific capacitance anode foil. By depositing a thin film that has high relative permittivity on aluminum foil, the permittivity of abode composite film as well as the specific capacitance of aluminum electrolytic capacity will both be largely enhanced.SIn this review, we systematically introduce the deposition techniques for the preparation of valve metal compounds for aluminum electrolytic capacitors. From the perspective of the film quality prepared by different deposition techniques, we expound the advantages and disadvantages of the various deposition techniques when preparing the anode composite foil for aluminum electrolytic capacitors. Further, we analyze the research progress of increasing the electric performance of anode foil by composite a valve metal thin film. Accordingly, several outlooks for promoting the practical applications of high specific capacitance aluminum electrolytic capacitors are proposed.

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[Li Zhuo, Du Xianfeng, Li Xiang, Wu Jingjing, Lin Baige, Xiong Lilong. Research Progress of Valve Metal Compound in High Specific Capacitance Aluminum Electrolytic Capacitors[J]. Rare Metal Materials and Engineering,2021,50(12):4553~4570.]
DOI:10.12442/j. issn.1002-185X.20200985

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History
  • Received:December 21,2020
  • Revised:February 09,2021
  • Adopted:March 08,2021
  • Online: January 09,2022
  • Published: December 24,2021