caa a22 4500 475815459 CHVBK 20180406123808.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1003527316173 doi (NATIONALLICENCE)springer-10.1023/A:1003527316173 Modelling the capacitance of d.c. etched aluminium electrolytic capacitor foil [Elektronische Daten] [D. Goad, H. Uchi] A model for the capacitance of anode foil used in aluminium electrolytic capacitors is compared with experimental data for commercial foils from two different manufacturers. These foils are obtained by anodic electrochemical etching to produce a porous tunnel etched structure, followed by formation of a layer of dielectric aluminium oxide in the pores. Data for the density and size of tunnels is obtained by sectioning the foil parallel to its surface with an ultramicrotome to several depths. In this paper the internal structure is modelled as a spatially random collection of hollow dielectric cylinders. Comparison of the measured capacitance with that calculated from the dimensional data and the model are in good agreement. The model predicts optimum values for tunnel size and density as a function of oxide thickness. Kluwer Academic Publishers, 2000 aluminium etching nationallicence anodic oxidation nationallicence capacitance nationallicence electrolytic capacitor nationallicence tunnel etching nationallicence Goad D. Boundary Technologies, 366 Lexington Drive, 60089, Buffalo Grove, IL, USA aut Uchi H. KDK Corporation, 363, Arakawa, Takahagi-shi, 318, Ibaraki-ken, Japan aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/3(2000-03-01), 285-291 0021-891X 30:3<285 2000 30 10800 https://doi.org/10.1023/A:1003527316173 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003527316173 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goad D. Boundary Technologies, 366 Lexington Drive, 60089, Buffalo Grove, IL, USA aut NATIONALLICENCE 700 1- Uchi H. KDK Corporation, 363, Arakawa, Takahagi-shi, 318, Ibaraki-ken, Japan aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/3(2000-03-01), 285-291 0021-891X 30:3<285 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer