An electrode material includes a fine-array porous material. The fine-array porous material includes a plurality of pores having a substantially uniform size of <1000 μm, with a variation of <20%, and comprises a metal such as Ni, Al, Ti, Sn and Mn. The metal fine-array porous electrode material can be surface-treated to form a metal oxide on the surface of the porous electrode material, or be coated with a metal oxide including RuO.sub.2, TaO. An electrical energy storage apparatus, such as a supercapacitor or a lithium battery, containing the fine-array porous electrode material can have significantly improved performances as compared with conventional materials.

An electrode material includes a fine-array porous material. The fine-array porous material includes a plurality of pores having a substantially uniform size of <1000 μm, with a variation of <20%, and comprises a metal such as Ni, Al, Ti, Sn and Mn. The metal fine-array porous electrode material can be surface-treated to form a metal oxide on the surface of the porous electrode material, or be coated with a metal oxide including RuO.sub.2, TaO. An electrical energy storage apparatus, such as a supercapacitor or a lithium battery, containing the fine-array porous electrode material can have significantly improved performances as compared with conventional materials.

The present invention is directed to a Process for Lithium Loaded Electrode Manufacturing for Lithium-Ion Capacitors, wherein there is provided a system of manufacture of electrodes using a lithium foil, and in particular, to the process of manufacturing lithium loaded negative electrodes for lithium-ion capacitors and the like using lithium foil, lithium strips and/or lithium films, employing a roll-to-roll manufacturing process wherein there is no drying time and no heat required to be applied to the laminator rolls, and wherein a lithium loaded negative electrode is manufactured using lithium foil strips in a roll-to-roll process, may include a top lithium strip and a bottom lithium strip on the negative electrode generated by the roll-to-roll process.

The present invention relates to a composition comprising particles of at least one 1,1-difluoroethylene (VDF)-based fluoropolymer, in admixture with a stabilizer agent selected from alkaline metal hydrogencarbonates or hydrogenphosphates, and to uses of said composition notably in electrochemical cells.

The present invention relates to a composition comprising particles of at least one 1,1-difluoroethylene (VDF)-based fluoropolymer, in admixture with a stabilizer agent selected from alkaline metal hydrogencarbonates or hydrogenphosphates, and to uses of said composition notably in electrochemical cells.

An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, where the anode and/or electrode includes an electrode film having a super-fibrillized binder material and carbon. The electrode film can have a reduced quantity of the binder material while maintaining desired mechanical and/or electrical properties. A process for fabricating the electrode film may include a fibrillization process using reduced speed and/or increased process pressure such that fibrillization of the binder material can be increased. The electrode film may include an electrical conductivity promoting additive to facilitate decreased equivalent series resistance performance. Increasing fibrillization of the binder material may facilitate formation of thinner electrode films, such as dry electrode films.

An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, where the anode and/or electrode includes an electrode film having a super-fibrillized binder material and carbon. The electrode film can have a reduced quantity of the binder material while maintaining desired mechanical and/or electrical properties. A process for fabricating the electrode film may include a fibrillization process using reduced speed and/or increased process pressure such that fibrillization of the binder material can be increased. The electrode film may include an electrical conductivity promoting additive to facilitate decreased equivalent series resistance performance. Increasing fibrillization of the binder material may facilitate formation of thinner electrode films, such as dry electrode films.

A slurry capable of strongly adhering an active material to a surface of a current collector even when heat-dried at high temperature is provided. The slurry according to an embodiment of the present invention contains at least an active material and a fibrous adhesion-imparting component and has a property expressed by Equation (1) below: (Peel strength P.sub.60)/(peel strength P.sub.80≥0.8) (1), where the peel strength P.sub.60 is peel strength determined as follows: a laminate of a copper foil/a solidified product/an acrylic plate is prepared by applying the slurry to a surface of a copper foil having a thickness of 15 μm and drying at 60° C. for 30 minutes to produce a solidified product with a length of 25 mm, a width of 150 mm, and a thickness of 100 μm, bonding an acrylic plate to a surface of the solidified product with a double-sided adhesive tape and reciprocating a 1-kg weight 5 times; the peel strength is determined when a copper foil edge is peeled at an angle of 90° and a speed of 100 mm/min in a state where the acrylic plate side of the resulting laminate is fixed; and the peel strength P.sub.80 is peel strength determined by the same method as the peel strength P.sub.60 except for changing the drying conditions to 80° C. for 22.5 minutes.

Provided is a novel technique relating to electrochemical devices that makes it possible to ensure a high level of safety of an electrochemical device while also causing the electrochemical device to display excellent high-temperature storage characteristics. One or more composite particles for an electrochemical device each include a core particle and a shell portion at least partially covering an outer surface of the core particle. The core particle contains a melamine compound, and the shell portion contains an inorganic material.

An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering pan of the negative electrode active material. The film has an insulating property and lithium ion conductivity.