The present invention relates to a three-dimensional structure electrode, a method for manufacturing same, and an electrochemical element including the electrode. The present invention is characterized by comprising: (a) an upper conductive layer and a lower conductive layer which have a structure constituting an assembly within which a conductive material and a porous nonwoven fabric including a plurality of polymeric fibers are three-dimensionally connected in an irregular and continuous manner, thereby forming a mutually connected porous structure; and (b) an active material layer forming the same assembly structure as the conductive layers and forming a three-dimensionally filled structure in which electrode active material particles are uniformly filled inside the mutually connected porous structure formed in the assembly structure, wherein the active material layer is formed between the upper conductive layer and the lower conductive layer.

The present invention relates to a novel gold-based porous material, the use of said gold-based porous material as a precursor of a negative active material, the preparation process of said gold-based porous material, a novel gold-based porous material comprising lithium, the use of said gold-based porous material comprising lithium as a negative electrode material, a lithium-ion battery comprising said gold-based porous material comprising lithium, and a process for the preparation of said gold-based porous material comprising lithium.

An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about −40° C. and about 250° C. Methods of fabrication and use are provided.

An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about −40° C. and about 250° C. Methods of fabrication and use are provided.

An anode for an energy storage device includes a current collector having a metal layer; and a metal oxide layer provided in a first pattern overlaying the metal layer. The anode further includes a patterned lithium storage structure having a continuous porous lithium storage layer selectively overlaying at least a portion of the first pattern of metal oxide. A method of making an anode for use in an energy storage device includes providing a current collector having a metal layer and a metal oxide layer provided in a first pattern overlaying the metal layer. A continuous porous lithium storage layer is selectively formed by chemical vapor deposition by exposing the current collector to at least one lithium storage material precursor gas.

An anode for an energy storage device includes a current collector having a metal layer; and a metal oxide layer provided in a first pattern overlaying the metal layer. The anode further includes a patterned lithium storage structure having a continuous porous lithium storage layer selectively overlaying at least a portion of the first pattern of metal oxide. A method of making an anode for use in an energy storage device includes providing a current collector having a metal layer and a metal oxide layer provided in a first pattern overlaying the metal layer. A continuous porous lithium storage layer is selectively formed by chemical vapor deposition by exposing the current collector to at least one lithium storage material precursor gas.

Provided is a power storage element including: an outer collector including outer opposing walls facing each other with a gap therebetween in an opposition direction, an inner collector including inner opposing walls, and an electrode member disposed in a space defined between the opposing walls. The electrode member includes: an electrode laminate having a sheet-like shape and including a positive electrode body, a negative electrode body, and a separator interposed between the positive and negative electrode bodies. The electrode laminate forms a plurality of unit electrode layers laminated in a lamination direction perpendicular to the opposition direction, and adjacent unit electrode layers in the lamination direction are continued in a bending manner at end portions of the unit electrode layers in an extension direction. The positive electrode body and the negative electrode body are in contact with a first collector and a second collector, respectively, to be electrically connected thereto.

There is disclosed a method and a system for a versatile in-situ approach to design the nanostructured transition metal selenide (TMS) materials for the high-energy solid-state hybrid supercapacitors (HSCs). Initially, the rose-nanopetals like NiSe@Cu2Se (NiCuSe) cathode and FeSe nanoparticles anode are directly anchored on 3D highly conducting Cu foam via purposefully in-situ conversion reactions. The different potential windows of the NiCuSe and FeSe in aqueous electrolytes associated with the excellent electrical conductivity and redox activity results in the superior electrochemical features for the half cell with maximum specific capacity of 534.2 mA h g.sup.−1 for NiCuSe and 573.8 mA h g.sup.−1 for FeSe at current density of 1 A g.sup.−1, respectively. The solid-state HSC cell with NiCuSe cathode and FeSe anode delivers a highest specific energy of 87.6 Wh kg.sup.−1 and excellent cycle lifetime with capacity retention of 91.3% over 10,000 cycles.

Integrated devices comprising integrated circuits and energy storage devices are described. Disclosed energy storage devices correspond to an all-solid-state construction, and do not include any gels, liquids, or other materials that are incompatible with microfabrication techniques. Disclosed energy storage device comprises energy storage cells with electrodes comprising metal-containing compositions, like metal oxides, metal nitrides, or metal hydrides, and a solid state electrolyte.

Integrated devices comprising integrated circuits and energy storage devices are described. Disclosed energy storage devices correspond to an all-solid-state construction, and do not include any gels, liquids, or other materials that are incompatible with microfabrication techniques. Disclosed energy storage device comprises energy storage cells with electrodes comprising metal-containing compositions, like metal oxides, metal nitrides, or metal hydrides, and a solid state electrolyte.