The method of manufacturing the fuel cell includes a step of stacking a gas diffusion layer (for example, an anode diffusion layer and a cathode diffusion layer) and a catalyst layer (for example, an anode catalyst layer and a cathode catalyst layer) on an electrolyte membrane, performing heat treatment with pressure and heat to form a membrane electrode assembly, a preliminary treatment step of bringing superheated steam into contact with the membrane electrode assembly, and an aging step of applying a voltage having a predetermined waveform between an anode electrode and a cathode electrode of the membrane electrode assembly subjected to the preliminary treatment step.

A nanowire catalyst for a fuel cell has a porous structure in which first and second pores having predetermined pore sizes are uniformly dispersed inside and on the surface thereof at a predetermined volume ratio. This enables the efficient exposure of active sites and efficient mass transfer, thereby improving fuel cell performance.

An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.

A positive electrode active material includes a lithium transition metal oxide comprising nickel in an amount of 60 mol % or greater with respect to a total number of moles of transition metals excluding lithium and a coating layer placed on a surface of the lithium transition metal oxide. The coating layer has a metal oxide and the lithium transition metal oxide is a single particle containing primary particles having an average particle diameter (D.sub.50) of 0.7 to 3 ?m. The metal oxide is primary particles having an average particle diameter (D.sub.50) of 0.5 ?m or less and has at least one metal element selected from the group consisting of Ni, Co, Mn, Al, B, Ti, Ta, W, and Nb.

Systems and methods are provided for an electrode assembly. In one example, a method for fabricating the electrode assembly includes co-extruding a first layer, comprising a conductive thermoplastic, with a second layer, comprising a nonconductive thermoplastic, to form a stack. The stack may be pressed between a set of rollers and cooled to provide a bipolar plate with an integrated negative electrode spacer bonded to a surface of the bipolar plate.

A negative electrode active material comprises graphite, low-crystalline carbon, and carbon black. The graphite forms a secondary particle. The secondary particle includes a plurality of primary particles. Inside the secondary particle, the low-crystalline carbon is adhered to surfaces of the primary particles. The carbon black is surrounded by the primary particles.

The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.

A method of preparing a nitrogen containing electrode catalyst by converting a high surface area metal-organic framework (MOF) material free of platinum group metals that includes a transition metal, an organic ligand, and an organic solvent via a high temperature thermal treatment to form catalytic active sites in the MOF. At least a portion of the contained organic solvent may be replaced with a nitrogen containing organic solvent or an organometallic compound or a transition metal salt to enhance catalytic performance. The electrode catalysts may be used in various electrochemical systems, including an alkaline fuel cell.

A method of preparing a nitrogen containing electrode catalyst by converting a high surface area metal-organic framework (MOF) material free of platinum group metals that includes a transition metal, an organic ligand, and an organic solvent via a high temperature thermal treatment to form catalytic active sites in the MOF. At least a portion of the contained organic solvent may be replaced with a nitrogen containing organic solvent or an organometallic compound or a transition metal salt to enhance catalytic performance. The electrode catalysts may be used in various electrochemical systems, including a proton exchange membrane fuel cell.

A glucose fuel cell for reception into a given constrained volume of implantation in a vertebrate in which the glucose fuel cell has access to fluid containing glucose. The fuel cell includes an anode adapted to oxidize the glucose, a cathode adapted to reduce an oxidant, and a membrane disposed between the anode and the cathode and separating the anode from the cathode. At least one of the anode or cathode define a flexible sheet that is geometrically deformed to be receivable into the given constrained volume of implantation and increase volumetric power density. Related methods of making a glucose fuel cell of this type and implantable assemblies including the glucose fuel cell are also disclosed.