Abstract: A system comprises a donor foil, a carrier substrate disposed adjacent the donor foil, an optical system configured to generate a laser beam through the donor foil and the carrier substrate to create a plurality of cathode voxels, and a current collector foil defined by an X-Y plane and configured to collect the plurality of cathode voxels in the X-Y plane, wherein a first set of the plurality of cathode voxels at a first location on the X-Y plane are diluted with a first amount of a solvent and a second set of the plurality of cathode voxels at a second location on the X-Y plane are diluted with a second amount of a solvent, the second amount of the solvent being less than the first amount of the solvent.

Abstract: A cathode for use in a lithium ion battery includes an active material present in an amount of from 70 to 99 weight percent, wherein the active material includes a lithium rich nickel manganese oxide; a conductive network of a mixture of conductive elements present in an amount of from 0.25 to 20 weight percent, wherein the mixture of conductive elements includes two or more of low aspect ratio particles, plate-like particles, and needle-like particles; and a binder system present in an amount of from 0.25 to 10 weight percent, wherein the binder system includes a primary binder polymer and an acid group or a salt thereof, wherein the amounts are based on a total weight of the cathode.

Abstract: An anode electrode comprises an anode current collector. An anode active material layer comprises anode active material comprising at least one of lithium silicon oxide, silicon oxide, lithium silicon oxide and graphite, and silicon oxide and graphite. The anode active material layer further comprises a binder comprising a mixture of styrene butadiene rubber (SBR), sodium carboxymethyl cellulose (NaCMC) and sodium polyacrylic acid (NaPAA), wherein SBR comprises greater than 60% wt of the binder.

Abstract: A battery cathode includes: a current collector; and a coating applied to the current collector, the coating including: conductive carbon; polyvinylidene fluoride binder polymer; acid-functionalized dispersant polymer; and electrochemically active layered metal oxide.

Abstract: The present disclosure provides an electrode assembly for use in an electrochemical cell that cycles lithium ions. The electrode assembly includes a current collector, an electroactive material layer disposed parallel with the current collector, and a protective coating disposed between the current collector and the electroactive material layer. The electroactive material layer is defined by a plurality of electroactive material particles. At least a portion of the electroactive material particles of the plurality of electroactive material particles includes a protective particle coating. The protective particle coating is a carbon coating that includes a first carbonaceous material. The protective coating is a carbon layer that includes a second carbonaceous material.

Abstract: A cathode configured for use within a fuel cell system is provided. The cathode includes a cathode substrate. The cathode further includes a coating disposed upon the cathode substrate and including a fluorocarbon polymer additive configured for sintering at a temperature of less than 200° C. The fluorocarbon polymer additive may be mixed with a catalyst ink coating or may be applied separately as a topcoat layer.

Abstract: An electrode is provided that includes a high-nickel electroactive material having greater than or equal to about 0.6 mole fraction of nickel, and greater than or equal to about 0.1 wt. % to less than or equal to about 2 wt. % of a sulfonated aromatic ionomer additive. The electrode is prepared by contacting an electroactive material slurry with one or more surfaces of a current collector, where a solids portion of the slurry includes greater than or equal to about 45 wt. % to less than or equal to about 99 wt. % of a high-nickel electroactive material, and greater than or equal to about 0.1 wt. % to less than or equal to about 2 wt. % of a sulfonated aromatic ionomer additive.

Abstract: A cathode configured for use within a fuel cell system is provided. The cathode includes a cathode substrate. The cathode further includes a coating disposed upon the cathode substrate and including a fluorocarbon polymer additive configured for sintering at a temperature of less than 200° C. The fluorocarbon polymer additive may be mixed with a catalyst ink coating or may be applied separately as a topcoat layer.

Abstract: A positive electrode including positive electrode active material particles, a polymeric binder, a polymeric dispersant, and a combination of electrically conductive carbon additive types. The combination of electrically conductive carbon additive types includes carbon particles, graphene sheet stacks, and carbon nanotubes.

Abstract: An electrode conductive filler precursor dispersion is provided that includes a conductive carbon-based particle selected from the group consisting of: graphene nanoplatelet (GNP), carbon nanofibers (CNF), carbon nanotubes (CNT), and combinations thereof. A stabilizing polymer comprising polyvinyl-4-pyridine (PVPy). The dispersion also includes a solvent. The electrode conductive filler precursor dispersion is substantially free of syneresis for greater than or equal to about 7 days. Methods of making the electrode conductive filler precursor dispersion and electrodes from the electrode conductive filler precursor dispersion are also provided.

Abstract: Systems, methods, fuel cells, and mixtures to inhibit ionomer permeation into porous substrates using a crosslinked ionomer are described. A method includes preparing an ionomer premix, mixing a crosslinking additive with the ionomer premix to thereby form a crosslinked-ionomer solution, and adding catalyst particles to the crosslinked-ionomer solution to produce a catalyst ink. The ionomer premix includes an ionomer dispersed within a solvent. The catalyst ink includes the catalyst particles distributed homogenously therethrough. The catalyst ink may be cast onto a porous substrate and dried to thereby form a catalyst layer for use in a fuel cell.

Abstract: Systems, methods, fuel cells, and mixtures to inhibit ionomer permeation into porous substrates using a crosslinked ionomer are described. A method includes preparing an ionomer premix, mixing a crosslinking additive with the ionomer premix to thereby form a crosslinked-ionomer solution, and adding catalyst particles to the crosslinked-ionomer solution to produce a catalyst ink. The ionomer premix includes an ionomer dispersed within a solvent. The catalyst ink includes the catalyst particles distributed homogenously therethrough. The catalyst ink may be cast onto a porous substrate and dried to thereby form a catalyst layer for use in a fuel cell.

Abstract: An electrode ink composition that forms a fuel cell catalyst layer with reduced mudcracking is provided. The ink composition includes a solvent, a platinum group metal-containing catalyst composition dispersed in the solvent, a primary polymer dispersed within the solvent, the primary polymer being an ionomer, and a secondary polymer dispersed within the solvent, the secondary polymer interacting with the primary polymer via a non-covalent interaction.

Abstract: A membrane-electrode assembly (MEA) for use in electrical applications, for example in polymer electrolyte fuel cells (PEFCs), includes a protective high-stiffness interlayer coating interposed between a gas diffusion layer and an ion conducting membrane layer, and includes also a catalyst layer. The interlayer mitigates electrical shorting across the ion conducting membrane layer, for example by providing mechanical support against fiber protrusions from the gas diffusion layers into the ion conducting membrane layer or by smoothing the roughness of the gas diffusion layer. The interlayer is typically a mixture of carbon black and one or more ionomers, and its properties are controlled by modulating its thickness, mechanical modulus, ionomer loading, and electrical conductivity.

Abstract: An electrode ink composition that forms a fuel cell catalyst layer with reduced mudcracking is provided. The ink composition includes a solvent, a platinum group metal-containing catalyst composition dispersed in the solvent, a primary polymer dispersed within the solvent, the primary polymer being an ionomer, and a secondary polymer dispersed within the solvent, the secondary polymer interacting with the primary polymer via a non-covalent interaction.

Abstract: A method of making a membrane electrode assembly for a fuel cell, a membrane electrode assembly, a fuel cell and a fuel cell system. The method includes preferentially adsorbing an ionomer and electrocatalyst mixture onto the surface of a porous fuel cell substrate by appropriate treatment of the mixture prior to or contemporaneous with placement of the mixture onto the substrate. This promotes retention of the ionomer-coated electrocatalyst at or near the surface of the substrate where catalytic activity between it and a proton exchange membrane is designed to take place. Retention of the ionomer-coated electrocatalyst near these interfacial regions by the present invention is preferable to having the ionomer and electrocatalyst be significantly absorbed into the substrate.

Abstract: An ink composition for forming fuel cell electrodes includes a solvent system, an ion-conducting polymer dispersed within the solvent system, a supported catalyst dispersed within the solvent system; and an onium compound having a hydrophobic hydrocarbon moiety. The onium compound is substantially soluble in the solvent system.

Abstract: An ink composition for forming a fuel cell electrode includes a catalyst composition, a polymeric binder, a polymeric dispersant, and a solvent. The polymeric dispersant includes a perfluorocyclobutyl-containing polymer.

Abstract: An ink composition for forming a fuel cell electrode includes a catalyst composition, a polymeric binder, a polymeric dispersant, and a solvent. The polymeric dispersant includes a perfluorocyclobutyl-containing polymer.

Abstract: A method of fabricating a polymeric film includes adsorbing an ammonium salt surfactant over a plurality of polymer beads. The method also includes adding the polymer beads to a polymer solution, wherein the ammonium salt surfactant substantially prevents flocculation of the polymer beads. Additionally, a polymeric film includes a plurality of polymer beads each having an outer surface. The polymeric film also includes an ammonium salt surfactant disposed over each of the outer surfaces, wherein the ammonium salt surfactant substantially prevents flocculation of the polymer beads.