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A Study on the Characteristics of Solid Capacitor According to the Pyrolysis Methods  

Kim, Jaekun (R&D Center, Enesol Co. Ltd.)
Yu, Hyungjin (R&D Center, Enesol Co. Ltd.)
Hong, Woonghee (R&D Center, Enesol Co. Ltd.)
Publication Information
Korean Chemical Engineering Research / v.44, no.6, 2006 , pp. 614-622 More about this Journal
Abstract
A Study on the characteristics of $Ta/Ta_2O_5/MnO_2$ capacitor applied $MnO_2$ by means of pyrolysis of manganese nitrate solution was carried out. Single phase of $MnO_2$ was obtained in the pyrolysis temperature range of 230 to $250^{\circ}C$ by TG/DSC analysis on manganese nitrate solution. Temperature of pyrolysis, concentration of manganese nitrate solution and the number of pyrolysis were selected for the basic parameters of embodying $MnO_2$ solid electrolyte and then the effects of these parameters on the characteristics of capacitor were estimated. The characteristics of capacitor pyrolyzed radiationally was superior to that of capacitor pyrolyzed convectionally on the basis of these optimized parameter conditions. It was verified that radiational pyrolysis formed smaller spherical $MnO_2$ particles than those of convectional one relatively and these facts resulted in forming uniform and dense solid electrolyte layer into the microporous sintered body of capacitor.
Keywords
Radiational Pyrolysis; Convectional Pyrolysis; Tantalum Solid Capacitor; Manganese Dioxide; Complex Concentration of Manganese Nitrate Solution;
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