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FTW200K超高比容钽粉研制钽电解电容器中被覆Mn(NO_(3))_(2)溶液新工艺的研究 被引量:2

Research on New Process for Coating Mn(NO_(3))_(2) Solution in Tantalum Electrolytic Capacitor with FTW200K Ultra-high Specific Density Powder
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摘要 针对用FTW200K超高比容钽粉研制的钽电解电容器在被覆Mn(NO 3)2溶液形成阴极层的过程,研究和讨论在不同质量浓度Mn(NO 3)2溶液、分解时间、分解方式、被覆遍数的条件下,制备的钽电解电容器MnO 2阴极层形成的质量与电容器电性参数之间的关系.结果表明,被覆Mn(NO 3)2溶液是形成MnO 2阴极层的主要途径;当Mn(NO 3)2溶液分解条件为一步法,即(195±5)℃、(30±0.5)min,二步法,即(195±5)℃、(20±0.5)min,(220±5)℃、(15±0.5)min,在被覆3遍的条件下,MnO 2阴极层的质量较好,能够使钽电容器的容量稳定引出,损耗、等效串联电阻和漏电流最小. Aiming at the process to form a cathode layer by coating a Mn(NO 3)2 solution for a tantalum electrolytic capacitor developed with FTW200K ultra-high specific volume tantalum powder,the article studied and discussed the mutual relationship between the mass formed by the cathode layer of the prepared tantalum electrolytic capacitor MnO 2 and the electrical parameters for the capacitor under different mass concentrations of Mn(NO 3)2(1.85 g/mL)solution,decomposition time,decomposition mode,and time of coating passes.The results show that:coated Mn(NO 3)2 solution is the main way to form MnO 2 cathode layer;The decomposition conditions of Mn(NO 3)2 solution are one-step method,namely(195±5)°C,(30±0.5)min,and two-step method,namely(195±5)°C,(20±0.5)min,(220±5)°C,(15±0.5)min.Under the condition of 3-time covering,the quality of the MnO 2 cathode layer performs good,the content of the tantalum capacitor can be stably extracted out,and the loss and equivalent series resistance(ESR)and leakage current show minimum.
作者 李福成 李彦军 哈艳梅 夏继海 Li Fucheng;Li Yanjun;Ha Yanmei;Xia Jihai(The State of Tantalum and Niobium Special Metal Materials Engineering Technology Research Center,Shizuishan 753000,China;State Key Laboratory of Special Rare Metal Materials,Northwest Rare Metal Materials Research Institute,Shizuishan 753000,China;Ningxia Orient Tantalum Industry Co.,Ltd.,Shizuishan 753000,China)
出处 《宁夏大学学报(自然科学版)》 CAS 2021年第3期295-299,共5页 Journal of Ningxia University(Natural Science Edition)
基金 宁夏自然科学基金资助项目(2019AAC03284)。
关键词 FTW200K金属钽粉 钽电解电容器 Mn(NO 3)2溶液 工艺条件 FTW200K metal tantalum powder Tantalum electrolysis capacitor Mn(NO 3)2 solution technological condition
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