US 11,694,851 B2
Capacitors with improved power cycling
Antony P. Chacko, Simpsonville, SC (US); John Joseph Ols, Simpsonville, SC (US); Ajaykumar Bunha, Simpsonville, SC (US); and Yaru Shi, Simpsonville, SC (US)
Assigned to KEMET Electronics Corporation, Fort Lauderdale, FL (US)
Filed by KEMET Electronics Corporation, Simpsonville, SC (US)
Filed on Feb. 18, 2021, as Appl. No. 17/178,631.
Prior Publication US 2022/0262569 A1, Aug. 18, 2022
Int. Cl. H01G 9/15 (2006.01); H01G 9/028 (2006.01)
CPC H01G 9/15 (2013.01) [H01G 9/028 (2013.01)] 70 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
an anode comprising a dielectric layer on said anode;
a primary conductive polymer layer on said dielectric;
a mordant layer on said primary conductive polymer layer wherein said mordant layer comprises a mordant compound of Formula A;

OG Complex Work Unit Chemistry
wherein:
each of R1-R6 is independently selected from H and —PO(OR7)2 wherein each R7 is independently selected from H, substituted or unsubstituted alkyl of 1-20 carbons, substituted or unsubstituted aryl of 6-20 carbons or an alkylaryl of 7-21 carbons; with the proviso that at least one of R1-R6 is —PO(OH)2;
a secondary conductive polymer layer on said mordant layer;
and wherein said mordant layer further comprises a crosslinked crosslinker.