Anodes made from powder, such as tantalum powder, that is highly spherical is described. Methods to make the anodes are further described.

Anodes made from powder, such as tantalum powder, that is highly spherical is described. Methods to make the anodes are further described.

The present invention relates to a lithium secondary battery including a positive electrode including a positive active material layer, the positive active material layer including a positive active material and a carbonaceous nanostructure; a negative electrode including a negative active material; and an electrolyte. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and an additive including a compound represented by Chemical Formula 1, wherein the amount of the carbonaceous nanostructure is about 0.5 wt % or more and less than 4 wt % based on 100 wt % of the total amount of the positive active material layer. ##STR00001## wherein, in Chemical Formula 1, A is a substituted or unsubstituted aliphatic chain or (—C.sub.2H.sub.4—O—C.sub.2H.sub.4-)n, and n is an integer from 1 to 10.

A highly reliable surface-mounted resistor, which prevents a problem of disconnection between an electrode and a terminal of a chip resistor when heating during mounting, is disclosed. The surface-mounted resistor includes a chip resistor comprising a plate-shaped substrate, a resistance body formed on an upper surface of the substrate, and an electrode connected the resistance body and drawn from the upper surface of the substrate to a lower surface via an end surface, a plate-shaped lead terminal connected to the electrode of the chip resistor, the plate-shaped lead terminal being fixed to the electrode of the substrate on the lower surface side, and an exterior member covering an entire chip resistor and a part of the lead terminal.

A modular integrated ultracapacitor-based energy storage and power delivery apparatus (UCAP module) is described. In some embodiments, the UCAP module comprises: at least one ultracapacitor cell coupled together in a series, parallel, or combination of both series and parallel configuration; an integrated charging unit; conductive hardware electrically coupling the ultracapacitors cells together; at least one UCAP terminal rod extending throughout the UCAP module and used to route power within the UCAP module and in some embodiments to other UCAP modules; and a protective casing. In some embodiments the UCAP terminal rod couples the UCAP module to at least one additional UCAP module in a series, parallel, or a combination of both series and parallel configurations. In other embodiments, the UCAP module further comprises connector rods that electrically and mechanically couple the UCAP module to at least one additional UCAP module.

A modular integrated ultracapacitor-based energy storage and power delivery apparatus (UCAP module) is described. In some embodiments, the UCAP module comprises: at least one ultracapacitor cell coupled together in a series, parallel, or combination of both series and parallel configuration; an integrated charging unit; conductive hardware electrically coupling the ultracapacitors cells together; at least one UCAP terminal rod extending throughout the UCAP module and used to route power within the UCAP module and in some embodiments to other UCAP modules; and a protective casing. In some embodiments the UCAP terminal rod couples the UCAP module to at least one additional UCAP module in a series, parallel, or a combination of both series and parallel configurations. In other embodiments, the UCAP module further comprises connector rods that electrically and mechanically couple the UCAP module to at least one additional UCAP module.

The present invention belongs to the field of carbon materials and provides a precursor material and method for the preparation of carbon nanostructures. The invention directly uses rocks or mixtures of carbon raw materials with metal or metal oxide catalysts to prepare precursor materials. The precursor material is then wrapped by using metal wires and polarized in a molten salt system to prepare the nanostructured carbon material. Metals or metal oxides scattered in the carbon phase act as catalysts for the generation of nanostructured carbon materials; this precursor material can be easily obtained from natural rocks or by artificially synthesizing. Nanostructured carbon materials are composed of carbon nanoparticles, carbon fiber and carbon nanotubes. The preparation process is simple and easy to implement, and the resulting nanostructured material has high conductivity and can be used as an active material or additive for use in energy storage devices.

There is provided a planar structural body 1 comprising a fibrous carbon nanohorn aggregate 2 in which a plurality of single-walled carbon nanohorns are aggregated in a fibrous state, and particularly the planar structural body in which a globular carbon nanohorn aggregate 3 is mixed is used. The planar structural body comprising such a fibrous carbon nanohorn aggregate can be used for electrode materials for lithium ion batteries, fuel cells, capacitors, electrochemical actuators, air cells, solar cells, and the like, and can be used also for electromagnetic shields, thermoconductive sheets, heat-dissipating sheets, protecting sheets, filters and absorbing materials.

There is provided a planar structural body 1 comprising a fibrous carbon nanohorn aggregate 2 in which a plurality of single-walled carbon nanohorns are aggregated in a fibrous state, and particularly the planar structural body in which a globular carbon nanohorn aggregate 3 is mixed is used. The planar structural body comprising such a fibrous carbon nanohorn aggregate can be used for electrode materials for lithium ion batteries, fuel cells, capacitors, electrochemical actuators, air cells, solar cells, and the like, and can be used also for electromagnetic shields, thermoconductive sheets, heat-dissipating sheets, protecting sheets, filters and absorbing materials.

There is provided a power storage device including: a power storage assembly; and a plurality of joined portions, each of the plurality of electrode plates including an electrode plate main body and a tab, the plurality of electrode plates being disposed such that the tabs are arranged in the stacking direction, the plurality of joined portions including a first joined portion configured to join the plurality of tabs to form a first bundle portion, and a second joined portion configured to join the plurality of tabs arranged in the stacking direction to form a second bundle portion, a part of the tabs in the first bundle portion and a part of the tabs in the second bundle portion being joined to the first joined portion and the second joined portion.