A device includes an electrode stack including a plurality of conductive anodes, a plurality of conductive cathodes, a plurality of separators arranged between the conductive anodes and the conductive cathodes, and a dielectric material disposed on a surface of each of the conductive anodes. The stack has a top surface, a bottom surface, and an edge extending between the top surface and the bottom surface. A continuous electrically insulating film overlies the edge, peripheral portions of the top surface and peripheral portions of the bottom surface so that a central portion of the top surface and a central portion of the bottom surface are exposed. An electrolyte is disposed between the conductive anodes and the conductive cathodes.

An improved capacitor is provided wherein the capacitor has an improved bond between the anode and anode wire. The anode comprises a pressed anode powder comprising a first density region and a second density region wherein the second density region has a higher density than the first density region. An anode wire extends into the second density region wherein the anode wire in the second density region is distorted by compression. This allows for better utilization of the metal powder surface area by allowing a lower bulk press density and lower sinter temperature while still achieving the necessary wire pull strength. In addition, this invention when utilized with deoxidation steps, results in sufficient wire pull strengths not possible otherwise.

An improved method of forming a capacitor, and capacitor formed thereby, is described. The method comprises forming an anode with an anode lead extending therefrom, forming a dielectric on the anode, forming a solid cathode layer on the dielectric and forming a hermetic encasement on the capacitor wherein the hermetic encasement comprises a conformal non-conductive layer.

Methods are disclosed for manufacturing an electrode for use in a device such as a secondary battery. Electrodes may include a first layer having first active particles adhered together by a binder, a second layer having second active particles adhered together by a binder, and an interphase layer interposed between the first and second layers. In some examples, the interphase layer may include an interpenetration of the first and second particles, such that substantially discrete fingers of the first layer interlock with substantially discrete fingers of the second layer.

An aqueous electrolyte solution, a power storage device filled with the aqueous electrolyte solution, and a manufacturing method of the power storage device are illustrated. The aqueous electrolyte solution comprises alkali metal cations of different types. With the hydration enthalpy of the alkali metal cations of the different types, a simulated boiling point of the aqueous electrolyte solution is higher than the 105° C. of the conventional aqueous electrolyte solution. After processed by the reflow furnace at 250° C., the power storage device has no cracks found on its appearance, which meets the electrical requirements, and overcomes the problem of bursting of the power storage device filled with conventional aqueous electrolyte solution. The housing of the power storage device adopts liquid crystal polymer, and/or the power storage device is firstly vacuumed and then packaged, therefore increasing coulombic efficiency of electrical testing of the power storage device.

Provided is an electrolytic capacitor that can reliably exhibit redox capacity due to a conductive polymer layer of a cathode. The electrolytic capacitor includes: a cathode having a conductive substrate and a conductive polymer layer placed on the surface of the conductive substrate; an anode having a substrate composed of a valve metal and a dielectric layer composed of an oxide of the valve metal that is placed on the surface of the substrate, the anode being disposed such that the dielectric layer and the conductive polymer layer of the cathode are opposed to each other across a space; and an ion conductive electrolyte with which the space is filled, the conductive polymer layer of the cathode that is in contact with the ion conductive electrolyte exhibiting a redox capacity due to application of a voltage between the anode and the cathode, wherein the contact resistance between the conductive substrate and the conductive polymer layer in the cathode is 1 Ωcm.sup.2 or less.

A porous metal foil and porous metal wire are described. Capacitor anodes made from either or both of the porous metal foil and porous metal wire are further described as well as methods to make same.

A capacitor disposed inside a multilayer substrate that includes a conductive pattern on a surface thereof and an anode portion having a first conductive metal member and a porous portion disposed on a surface of the first conductive metal member, a cathode portion, and a dielectric layer disposed between the anode portion and the cathode portion. Moreover, the anode portion is led out to a surface side of the multilayer substrate by a connection electrode including an alloy layer containing a metal forming the first conductive metal member and a conductive layer disposed on the alloy layer, and in which the connection electrode is connected to the conductive pattern formed on the surface of the multilayer substrate.

An electrode foil for an electrolytic capacitor includes a base material containing a valve metal and a dissimilar metal composite layer covering a surface of the base material. The dissimilar metal composite layer includes a mixed region in which a first metal and a second metal are mixed. The second metal is different from the first metal. The mixed region constitutes at least 50% of the dissimilar metal composite layer in a thickness-wise direction of the dissimilar metal composite layer. Each of a content M1 of the first metal and a content M2 of the second metal with respect to all metals in the mixed region is 1 atomic % or more.

Platinum films can be obtained by aerosol assisted chemical vapor deposition (AACVD) using one or more Pt-dialkyldithiocarbamate complexes of formula Pt(S.sub.2CNR.sub.2), wherein R is independently alkyl, aryl, or alkaryl, particularly as single source precursors. Such methods may include heating a substrate to a deposition temperature above 150° C. in a reactor; and introducing into the reactor, at the deposition temperature, an aerosol including a platinum dithiocarbamate compound, salt, and/or solvate thereof, to thereby deposit the platinum layer on the substrate. The Pt(S.sub.2CNR.sub.2)-derived films have well-connected and defect-free surface topography and better catalytic performance, likely due to their high conductivity and reflectivity.