摘要:
Provided is a polymerization liquid for electropolymerization, which uses a solvent that is mainly composed of water, which is greatly increased in the amount of a monomer contained therein, and which is capable of quickly forming a conductive polymer layer having high conductivity and heat resistance, A polymerization liquid for electropolymerization of the present invention contains: a solvent that is composed of 100-80% by mass of water and 0-20% by mass of an organic solvent; at least one monomer having a pi-conjugated double bond; at least one supporting electrolyte; and at least two nonionic surfactants. The at least two nonionic surfactants are composed of at least one acetylenol surfactant and at least one water-soluble nonionic surfactant other than the acetylenol surfactant. Due to the combination of the two nonionic surfactants, the amount of the monomer emulsified with the solvent can be greatly increased.
摘要:
Disclosed is a negative electrode active material which is capable of occluding and releasing lithium, and has high reversible capacity and reduced initial irreversible capacity. This negative electrode active material includes a granulated substance, in which a composite containing nanosize conductive carbon powder and tin oxide powder contacting the surface of the conductive carbon powder in a highly dispersed state and an aggregate selected from the group consisting of graphite and nongraphitizable carbon are aggregated. The electrochemical decomposition of electrolytic solution is suppressed due to a reduction in the area where the carbon material in the granulated substance and the electrolytic solution are in contact, resulting in a significant reduction in the initial irreversible capacity of the negative electrode active material.
摘要:
Provided is an electrochemical capacitor which has low DC internal resistance, and which minimizes increase in the DC internal resistance due to a high temperature experience. The electrochemical capacitor is provided with a positive electrode having a positive electrode active material layer containing activated carbon, a negative electrode having a negative electrode active material layer containing a spinel-type lithium titanate, and a separator holding a non-aqueous electrolytic solution containing a lithium salt between the positive electrode active material layer and the negative electrode active material layer, a 100% discharge capacity of lithium titanate being set to within a range of 2.2 to 7.0 times a 100% discharge capacity of activated carbon. During charging and discharging of the electrochemical capacitor, only the area near the surfaces of lithium titanate particles are utilized, lowering the DCIR and improving the stability of the DCIR.
摘要:
A composite powder in which highly dispersed metal oxide nanoparticle precursors are supported on carbon is rapidly heated under nitrogen atmosphere, crystallization of metal oxide is allowed to progress, and highly dispersed metal oxide nanoparticles are supported by carbon. The metal oxide nanoparticle precursors and carbon nanoparticles supporting said precursors are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The rapid heating treatment in said nitrogen atmosphere is desirably heating to 400° C.-1000° C. By further crushing the heated composite, its aggregation is eliminated and the dispersity of metal oxide nanoparticles is made more uniform. Examples of a metal oxide that can be used are manganese oxide, lithium iron phosphate, and lithium titanate. Carbons that can be used are carbon nanofiber and Ketjen Black.
摘要:
Provided are an electrode formed by mixing carbon powder and a fibrous carbon, wherein influence of a resin-based binder or the like and an conductivity promoting material or the like is eliminated to have low electric resistance and an excellent property of capacitance; an electric double-layer capacitor using the electrodes; and a manufacturing method of the electrode. Provided is a dispersion step in which the carbon powder with a particle size of less than 100 nm and the fibrous carbon are dispersed into a solvent. The dispersion step is to allow jets of the solution to collide with each other or to apply shear stress and centrifugal force to the solution, thereby dispersing the carbon powder and the fibrous carbon. Furthermore, the method comprises the sheet electrode forming step in which the solution subjected to the dispersion step is filtered to obtain the carbon powder/fibrous carbon sheet.
摘要:
Provided is a dye-sensitized solar cell which exhibits excellent heat resistance and high photoelectric conversion efficiency. This dye-sensitized solar cell is provided with: a negative electrode having a semiconductor layer with a pigment as a photosensitizer, an electrolyte layer located on the semiconductor layer of the negative electrode having a paired oxidized species and reduced species, and a positive electrode located on the electrolyte layer having a conductive polymer layer that acts as a catalyst to convert the oxidized species into the reduced species. The conductive polymer layer in the positive electrode contains a polymer derived from at least one monomer selected from the group consisting of 3,4-disubstituted thiophenes; and an anion as a dopant to the polymer generated from at least one organic non-sulfonate compound having an anion with the molecular weight of 200 or more. The thickness of the conductive polymer layer is within the range of 100 to 10000 nm.
摘要:
Disclosed is an electrode body for a solar cell, which is capable of being used as a component of both an organic thin-film solar cell and a dye-sensitized solar cell, and has excellent heat resistance. This electrode body for a solar cell is provided with a substrate with a conductive part at least on the surface and a conductive polymer layer located on the conductive part of the substrate, in which the conductive polymer layer includes: a polymer which is obtained by polymerizing a monomer selected from the group consisting of 3,4-disubstituted thiophenes; and an anion as a dopant to the polymer generated from at least one organic non-sulfonate compound having an anion with the molecular weight of 200 or more. Since the anion of the organic non-sulfonate compound is included as a dopant in the conductive polymer layer, the heat resistance of the conductive polymer layer is improved.
摘要:
A method for manufacturing composites in which the nanosize of a carbon material and a metal compound can be maintained as the final product is realized to provide a superior electrode material. A treatment of increasing the functional groups possessed by a carbon material is performed in advance. Then, a metal compound precursor is supported on a carbon material by separately performing a treatment of adsorbing one of source materials of the metal compound to the functional groups of the carbon material having increased functional groups and a treatment of reacting the adsorbed source material of the metal compound with the rest of the source materials on the carbon material to produce a metal compound precursor on the carbon material. Finally, a lithium source is introduced and calcined.
摘要:
A capacitor includes: an anode part that is drawn from an anode body of a capacitor element to an element end-face, to be formed over the element end-face; a cathode part that is drawn from a cathode body of the capacitor element to the element end-face, to be formed over the element end-face; an anode terminal member that is disposed in a sealing member; a cathode terminal member that is disposed in the sealing member; an anode current collector plate that is connected to the anode part, and is also connected to the anode terminal member; and a cathode current collector plate that is connected to the cathode part, and is also connected to the cathode terminal member.
摘要:
An electrical double-layer capacitor electrode with excellent capacitance characteristics is obtained together with a manufacturing method therefor. Paper-molded sheet of carbon nanotubes is integrated with etched foil constituting a collector, by means of bumps and indentations formed on the surface of etched foil to prepare an electrical double-layer capacitor electrode. Alternatively, carbon nanotubes grown around core catalyst particles on substrate are integrated with etched foil by means of humps and indentations formed on the surface of etched foil to prepare all electrical double-layer capacitor electrode. To manufacture these electrodes, this carbon nanotube sheet or substrate with carbon nanotubes grown thereon is laid over bumps and indentations on the surface of etched foil, and the sheet or substrate and the foil are pressed under 0.01 to 100 t/cm2 of pressure to integrate the carbon nanotubes with the etched foil.
摘要翻译:获得具有优异的电容特性的电双层电容器电极及其制造方法。 通过形成在蚀刻箔的表面上的凸起和凹陷,将碳纳米管的纸模成型片与构成集电体的蚀刻箔一体化,以制备双电层电容器电极。 或者,通过在蚀刻箔的表面上形成的凸起和凹陷将蚀刻的箔与蚀刻箔结合在基板上的核心催化剂颗粒周围生长的碳纳米管,以制备所有双电层电容器电极。 为了制造这些电极,将碳纳米管片或其上生长有碳纳米管的基板放置在蚀刻箔的表面上的凸起和凹陷上,并将片或基片和箔压制在0.01至100t / cm 2的压力下以整合 具有蚀刻箔的碳纳米管。