| abstract |
There is provided a solid electrolytic capacitor comprising an anode body formed from an electrically conductive powder, a dielectric disposed on and / or within the anode body, an adhesive coating overlying the dielectric body, and a solid electrolyte overlying the adhesive coating. The powder has a high specific charge and, therefore, a relatively dense packing structure. Despite being formed from such powders, the inventors of the present invention have found that the conductive polymer can easily penetrate into the pores of the anode. This is achieved in part through the use of a discontinuous precoat layer in the adhesive coating that overlies the dielectric. The precoat layer comprises a plurality of discrete manganese oxide nanoprojections (e.g., manganese dioxide). |