Catalyst ink may be directly printed to a substrate using a stamp. Printed catalyst ink may converted to a pattern of one or more metal traces. Materials for a stamp and/or a substrate, and/or components of a catalyst ink, may be selected based on attraction of one or more of components of the catalyst ink to one or more print surfaces of the substrate and/or to one or more write surfaces of the stamp.

An electroless plating undercoat film comprising (A) a conductive polymer and further comprising (B) a reactant of a polyol resin having an acid value and a polyisocyanate compound, wherein the acid value is 0.1 mgKOH/g to 30 mgKOH/g.

Electrically-conductive silver metal is provided in a pattern on a substrate having a first supporting side and a second opposing supporting side. One or both of the first supporting side and the second opposing supporting side has one or more electrically-conductive silver metal containing patterns containing the electrically-conductive silver metal; an α-oxy carboxylate; a 5- or 6-membered N-heteroaromatic compound; and a polymer that is either (i) a hydroxy-containing cellulosic polymer or (ii) a non-cellulosic acrylic polymer having a halo- or hydroxy-containing side chain. Such articles can be used in various devices and electrodes.

Provided is a method that is for manufacturing a conductive pattern-provided structure, that involves simple manufacturing steps, and that enables formation of a conductive pattern-provided structure having excellent interlayer adhesion. One mode of the present invention provides a method for manufacturing a conductive pattern-provided structure, the method comprising: a coating film formation step for obtaining a coating film by printing, on a base material, a dispersion that contains copper oxide-containing particles; and a plating step for performing electroless plating on the coating film by using a plating solution. The plating solution contains EDTA (ethylenediaminetetraacetic acid).

A method of preparing an ionomer of an ion exchange membrane with a recombination catalyst to prevent gas crossover of species, such as hydrogen and/or oxygen, to anodic and cathodic cell compartments of an electrochemical cell. An ionomer of an ion exchange membrane is prepared with a recombination catalyst. The ionomer is a proton or anion exchange polymer and the recombination catalyst, selected from the precious metals group, is provided in ionic form in a liquid metal salt solution. The ion exchange membrane is immersed into the liquid metal salt solution to exchange ionic ionomer ports with the ionic form of the recombination catalyst. The membrane is then assembled in the electrochemical cell and the ionic form of the recombination catalyst is at least partly reduced to metallic form by forcing hydrogen to permeate through the ionomer of the ion exchange membrane.

Systems and methods are provided that entail polymeric fibers produced via an electrospinning process, and metallic nanostructures adhered to surfaces of the polymeric fibers via an electroless deposition process. Suitable materials for the polymeric fibers and metallic nanostructures include polyacrylonitrile (PAN) fibers and copper nanostructures, respectively.

A coating method for preventing outgassing from an aerospace component made of a resin is proposed. In the coating method for preventing outgassing from the aerospace component, first, a polymer including a resin is provided. After that, primary outgassing in which the polymer is subjected to hot air drying to evaporate gas therefrom is performed. Next, the surface of the polymer after the primary outgassing is subjected to a cold plasma treatment to introduce hydrophilic functional groups so that it is possible to perform plating on the surface of the polymer. After that, the surface of the polymer after the cold plasma treatment is subjected to a catalytic treatment and an activation treatment for post-processes. Next, a first functional metal layer is formed on the surface of the polymer by means of electroless plating to suppress the release of gas through outgassing.

A method of constructing conductive material in arbitrary three-dimensional (3D) geometries, such as 3D printing. The method may include selective application of an aerosol-based colloidal solution containing a catalytic palladium nanoparticle material onto a substrate and then immersion of the coated substrate into an electro-less plating bath for deposition of conductive copper material. The above steps may be repeated to create arbitrary 3D geometric constructs containing conductive metallic patterns.

A method of constructing conductive material in arbitrary three-dimensional (3D) geometries, such as 3D printing. The method may include selective application of an aerosol-based colloidal solution containing a catalytic palladium nanoparticle material onto a substrate and then immersion of the coated substrate into an electro-less plating bath for deposition of conductive copper material. The above steps may be repeated to create arbitrary 3D geometric constructs containing conductive metallic patterns.

An article has a substrate and a pattern of a dry silver nanoparticle-containing composition comprising at least 20 weight % of one or more (a) polymers, that are cellulosic polymers; (d) silver nanoparticles having a mean particle size of 25-750 nm and present in an amount of 0.1-400 weight %, based on the total weight of the one or more (a) polymers; and (e) carbon black in an amount of 5-50 weight %, based on the total weight of the one or more (a) polymers. Such patterns can have multiple fine lines of any geometric arrangement. The article can have multiple patterns of this type, and each pattern can be electrolessly plated with a suitable metal such as copper to provide electrically-conductive product articles.