Niobium powders and niobium electrolytic capacitors

Details Niobium powders and niobium electrolytic capacitors Niobium powders and niobium electrolytic capacitors

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) C22C 1/04 (2006.01) H01G 9/042 (2006.01) H01G 9/052 (2006.01)

Patent

CA 2271780

A flaked niobium powder is disclosed as well as electrolytic capacitors formed from the flaked niobium powders. Niobium powders having a BET surface area of at least about 0.50 m2/g are also disclosed and capacitors made therefrom, as well as niobium powders doped with an oxygen content of at least 2,000 ppm. Methods to reduce DC leakage in a niobium anode are also disclosed.

L'invention concerne une poudre de niobium en paillettes, de même que des condensateurs électrolytiques formés à partir de ces poudres de niobium en paillettes. L'invention concerne également des poudres de niobium possédant une surface utile BET d'au minimum environ 0,50 m?2¿/g, des condensateurs fabriqués à l'aide de celles-ci, ainsi que des poudres de niobium dopées à l'aide d'une teneur en oxygène d'au moins 2.000 ppm. On décrit enfin des procédés de réduction des fuites de courant continu dans une anode au niobium.

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