| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solid electrolytic capacitor that contains an anode body formed from an electrically conductive powder and a dielectric coating located over and/or within the anode body.SOLUTION: The powder has a high specific charge and also a relative dense packing configuration. Despite formation from such a powder, the present inventors have discovered that a manganese precursor solution (e.g., manganese nitrate) can be readily impregnated into the pores of the anode. This is accomplished to some extent by using in the precursor solution a dispersant that helps minimize the likelihood that the manganese oxide precursor will form droplets upon contacting the surface of the dielectric. Moreover, the precursor solution can be better dispersed so that the resulting manganese oxide has a "film-like" configuration and covers at least a portion of the anode in a substantially uniform manner. This improves the quality of the resulting oxide as well as its surface coverage, and thereby enhances the electrical performance of the capacitor.</p> |
