A capacitor assembly comprising: a solid electrolytic capacitor element that contains a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric, wherein the solid electrolyte includes a plurality of conductive polymer particles containing an extrinsically conductive polymer having repeating units of the following formula: wherein, R 7 is a linear or branched, C 1 to C 18 alkyl radical, C 5 to C 12 cycloalkyl radical, C 6 to C 14 aryl radical, C 7 to C 18 aralkyl radical, or a combination thereof; and q is an integer from 0 to 8; an anode termination that is in electrical connection with the anode body, wherein a first coating is disposed on at least a portion of the anode termination, the first coating containing an organometallic compound; a cathode termination that is in electrical connection with the solid electrolyte wherein a second coating is disposed on at least a portion of the cathode termination, the second coating containing an organometallic compound; and a casing material that encapsulates the capacitor element and leaves exposed a mounting surface of the anode termination and the cathode termination; wherein the organometallic compound of the first coating, the organometallic compound of the second coating, or both has the following general formula: wherein, M is a metallic atom; R 1, R 2, and R 3 are independently an alkyl or a hydroxyalkyl, wherein at least one of R 1, R 2, and R 3 is a hydroxyalkyl; n is an integer from 0 to 8; X is an organic or inorganic functional group. a solid electrolytic capacitor element that contains a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric, wherein the solid electrolyte includes a plurality of conductive polymer particles containing an extrinsically conductive polymer having repeating units of the following formula: wherein, R 7 is a linear or branched, C 1 to C 18 alkyl radical, C 5 to C 12 cycloalkyl radical, C 6 to C 14 aryl radical, C 7 to C 18 aralkyl radical, or a combination thereof; and q is an integer from 0 to 8; an anode termination that is in electrical connection with the anode body, wherein a first coating is disposed on at least a portion of the anode termination, the first coating containing an organometallic compound; a cathode termination that is in electrical connection with the solid electrolyte wherein a second coating is disposed on at least a portion of the cathode termination, the second coating containing an organometallic compound; and a casing material that encapsulates the capacitor element and leaves exposed a mounting surface of the anode termination and the cathode termination; wherein the organometallic compound of the first coating, the organometallic compound of the second coating, or both has the following general formula: wherein, M is a metallic atom; R 1, R 2, and R 3 are independently an alkyl or a hydroxyalkyl, wherein at least one of R 1, R 2, and R 3 is a hydroxyalkyl; n is an integer from 0 to 8; X is an organic or inorganic functional group. R 7 is a linear or branched, C 1 to C 18 alkyl radical, C 5 to C 12 cycloalkyl radical, C 6 to C 14 aryl radical, C 7 to C 18 aralkyl radical, or a combination thereof; and q is an integer from 0 to 8; an anode termination that is in electrical connection with the anode body, wherein a first coating is disposed on at least a portion of the anode termination, the first coating containing an organometallic compound; a cathode termination that is in electrical connection with the solid electrolyte wherein a second coating is disposed on at least a portion of the cathode termination, the second coating containing an organometallic compound; and a casing material that encapsulates the capacitor element and leaves exposed a mounting surface of the anode termination and the cathode termination; wherein the organometallic compound of the first coating, the organometallic compound of the second coating, or both has the following general formula: wherein, M is a metallic atom; R 1, R 2, and R 3 are independently an alkyl or a hydroxyalkyl, wherein at least one of R 1, R 2, and R 3 is a hydroxyalkyl; n is an integer from 0 to 8; X is an organic or inorganic functional group. M is a metallic atom; R 1, R 2, and R 3 are independently an alkyl or a hydroxyalkyl, wherein at least one of R 1, R 2, and R 3 is a hydroxyalkyl; n is an integer from 0 to 8; X is an organic or inorganic functional group.