CPC H01G 9/07 (2013.01) [H01G 9/0032 (2013.01); H01G 9/035 (2013.01); H01G 9/042 (2013.01)] | 9 Claims |
1. An electrode foil for an electrolytic capacitor, the electrode foil comprising:
an anode body including aluminum;
a first dielectric layer covering at least a part of the anode body and including Al2O3; and
a second dielectric layer covering at least a part of the first dielectric layer and including SiO2, wherein:
a thickness T2 of the second dielectric layer is smaller than a thickness T1 of the first dielectric layer,
a total thickness of the thickness T1 of the first dielectric layer and the thickness T2 of the second dielectric layer ranges from 7 nm to 12.5 nm, inclusive, and
a ratio T1/T2 of the thickness T1 of the first dielectric layer to the thickness T2 of the second dielectric layer is more than 1 and less than or equal to 20.
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