NbO Capacitors With Improved Performance And Higher Working Voltages
A capacitor is described with an NbO anode. The capacitor has an NbO anode and an NbO anode lead extending from the NbO anode. A dielectric is on the NbO anode and a conductor is on the dielectric.
1 . A capacitor comprising:
an NbO anode;
an NbO anode lead extending from said NbO anode;
a dielectric on said NbO anode; and
a conductor on said dielectric.
2 . The capacitor of claim 1 wherein said NbO anode comprises Nb 1+y O 1−y wherein −0.1≦y≦0.1.
3 . The capacitor of claim 1 wherein said NbO anode lead comprises Nb 1+x O 1−x wherein −0.1≦x≦0.1.
4 . The capacitor of claim 1 wherein said dielectric comprises Nb 2 O 5 .
5 . The capacitor of claim 1 wherein said conductor comprises at least one material selected from MnO 2 , a conductive polymer and a liquid electrolyte.
6 . The capacitor of claim 5 wherein said conductive polymer is selected from the group consisting of polypyrrole, polyaniline and polythiophene.
7 . The capacitor of claim 1 further comprising at least one element selected from an anode lead in electrical contact with said NbO anode lead and a cathode lead in electrical contact with said cathode.
8 . A capacitor comprising:
an NbO anode;
a knob comprising NbO attached to said NbO anode;
an anode lead attached to said knob;
a dielectric on said NbO anode; and
a conductor on said dielectric.
9 . The capacitor of claim 8 wherein said knob has a density which is higher than a density of said NbO anode.
10 . The capacitor of claim 9 wherein said NbO anode has a density of 2.5 g/cc to 4.5 g/cc and said knob has a density of 2.8 g/cc to 5 g/cc.
11 . The capacitor of claim 9 wherein said knob has a density which is at least 12% higher than a density of said anode.
12 . The capacitor of claim 8 wherein said NbO anode comprises Nb 1+y O 1−y wherein −0.1≦y≦0.1.
13 . The capacitor of claim 8 wherein said anode lead comprises a material selected from Nb and Ta.
14 . The capacitor of claim 8 wherein said dielectric comprises Nb 2 O 5 .
15 . The capacitor of claim 8 wherein said conductor comprises at least one material selected from MnO 2 , a conductive polymer and a liquid electrolyte.
16 . The capacitor of claim 15 wherein said conductive polymer is selected from the group consisting of polypyrrole, polyaniline and polythiophene.
17 . The capacitor of claim 8 wherein said anode and said knob have a density of 2.5 g/cc to 5 g/cc.
18 . The capacitor of claim 8 further comprising at least one element selected from an anode lead in electrical contact with said anode lead and a cathode lead in electrical contact with said cathode.
19 . A process of manufacturing a capacitor comprising:
providing an NbO anode with an NbO anode lead extending therefrom;
forming a dielectric on said NbO anode; and
forming a conductor on said dielectric.
20 . The process of manufacturing a capacitor of claim 19 wherein said NbO anode comprises Nb 1+y O 1−y wherein −0.1≦y≦0.1.
21 . The process of manufacturing a capacitor of claim 19 wherein said NbO anode lead comprises Nb 1+x O 1−x wherein −0.1≦x≦0.1.
22 . The process of manufacturing a capacitor of claim 19 wherein said dielectric comprises Nb 2 O 5 .
23 . The process of manufacturing a capacitor of claim 19 wherein said conductor comprises at least one material selected from MnO 2 , a conductive polymer and a liquid electrolyte.
24 . The process of manufacturing a capacitor of claim 23 wherein said conductive polymer is selected from the group consisting of polypyrrole, polyaniline and polythiophene.
25 . The process of manufacturing a capacitor of claim 19 further comprising at least one element selected from attaching an anode lead in electrical contact with said NbO anode lead and attaching a cathode lead in electrical contact with said cathode.
26 . A process of manufacturing a capacitor comprising:
providing a sintered NbO anode comprising a sintered knob attached thereto wherein said knob comprises NbO;
attached an anode lead to said knob;
forming a dielectric on said NbO anode; and
forming a conductor on said dielectric.
27 . The process of manufacturing a capacitor of claim 26 further comprising providing a NbO powder and pressing said NbO powder to form an anode.
28 . The process of manufacturing a capacitor of claim 27 further comprising providing a NbO powder and pressing said NbO powder to form said knob.
29 . The process of manufacturing a capacitor of claim 26 wherein said anode and said knob are pressed separately.
30 . The process of manufacturing a capacitor of claim 26 wherein said sintered NbO anode and said sintered knob are sintered separately.
31 . The process of manufacturing a capacitor of claim 26 wherein said sintered NbO anode and said sintered knob are sintered together.
32 . The process of manufacturing a capacitor of claim 26 wherein said NbO anode comprises Nb 1+y O 1−y wherein −0.1≦y≦0.1.
33 . The process of manufacturing a capacitor of claim 26 wherein said NbO anode lead comprises Nb 1+x O 1−x wherein −0.1≦x≦0.1.
34 . The process of manufacturing a capacitor of claim 26 wherein said dielectric comprises Nb 2 O 5 .
35 . The process of manufacturing a capacitor of claim 26 wherein said conductor comprises at least one material selected from MnO 2 , a conductive polymer and a liquid electrolyte.
36 . The process of manufacturing a capacitor of claim 35 wherein said conductive polymer is selected from the group consisting of polypyrrole, polyaniline and polythiophene.
37 . The process of manufacturing a capacitor of claim 26 further comprising at least one element selected from attaching an anode lead in electrical contact with said NbO anode lead and attaching a cathode lead in electrical contact with said cathode.