Patent ID: 8223473

Claim:
An electrolytic capacitor comprising: an anode comprising an anodically oxidized porous body, the porous body containing tantalum, niobium, or an electrically conductive oxide thereof; a cathode comprising a metal substrate; and a liquid electrolyte disposed between the cathode and the anode, wherein the electrolyte comprises a lithium salt selected from the group consisting of LiBr, Lil, LiSCN, LiClO 4 , LiBF 4 , LiAsF 6 , LiPF 6 , LiCF 3 SO 3 , LiAlCl 4 , LiC(CF 3 SO 2 ) 3 , LiPF 3 (CF 3 ) 3 , LiPF 3 (C 2 F 5 ) 3 , LiBF 4 , LiBF 3 CF 3 , LiBF 3 (C 2 F 5 ), LiBF 3 (C 3 F 7 ), LiN(CF 3 SO 2 ) 2 , LiN(C 2 F 5 SO 2 ) 2 , LiN(CF 3 SO 2 )(C 4 F 9 SO 2 ), bis[trifluoromethane-sulfonyl]imidolithium (LiTFSI), and mixtures thereof, an ionically conductive polymer, and an organic solvent, wherein the liquid electrolyte has a viscosity of from about 10 to about 400 Poise, as determined at a temperature of 25° C. and a shear rate of 1 sec −1 .