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Influence of Electrolyte on ESR of Medium Voltage Wet Tantalum Capacitors

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【Author】 LIU Zhong-e~1, SONG Jin-rong~1, CHEN Xiao-jing~1, LI Yi-lian~2, GUI Juan~1 (1.School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; 2.School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China)

【机构】 School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China,School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China,School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China,School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China,School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China；

【Abstract】 In this paper, the influence of working electrolyte on high-frequency electrical performance of wet tantalum capacitors is studied. Emphasis is especially put on the study of the contribution of depolariser in reducing Equivalent Series Resistance(ESR). According to the theory of depolarization in electrochemistry and the theory of cathode capacitance of electrolytic capacitor, different kinds of depolarisers are added separately into the foregone electrolyte. Then capacitors are assembled with tantalum cores dipped with the compounded electrolytes. The best depolariser and its concentration in the whole electrolyte could be selected according to the test results of the capacitance and ESR of the capacitors. The results of our experiment show that depolariser Fe 2(SO 4) 3 used in working electrolyte of 100 V/100 μF wet tantalum capacitors can help to obtain lower ESR and higher capacitance at frequency from 0.1 kHz to 100 kHz.更多还原

【关键词】 depolariser； electrical double layer； electrical performance；
【Key words】 depolariser； electrical double layer； electrical performance；

【基金】 SupportedbyNationalNaturalScienceFoundationofChina(No .6 0 3710 2 8)

【文献出处】 Transactions of Tianjin University ,天津大学学报(英文版) , 编辑部邮箱 ,2004年03期

【分类号】TM53
【被引频次】6
【下载频次】18

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