Disclosed are a method for manufacturing an electrode, an electrode manufactured thereby, a membrane-electrode assembly including the electrode, and a fuel cell containing the membrane-electrode assembly. The method includes the steps of: preparing an electrode forming composition by mixing a catalyst with an ionomer; applying a low-frequency acoustic energy to the electrode forming composition to perform resonant vibratory mixing so as to coat the ionomer on the surface of the catalyst; and coating the electrode forming composition to manufacture an electrode.

Disclosed are a method for manufacturing an electrode, an electrode manufactured thereby, a membrane-electrode assembly including the electrode, and a fuel cell containing the membrane-electrode assembly. The method includes the steps of: preparing an electrode forming composition by mixing a catalyst with an ionomer; applying a low-frequency acoustic energy to the electrode forming composition to perform resonant vibratory mixing so as to coat the ionomer on the surface of the catalyst; and coating the electrode forming composition to manufacture an electrode.

A series of catalyst inks comprising n-propanol and water are disclosed. The impact of these inks on structure and morphology of catalyst layers is discussed, as well as applications of the catalyst ink compositions in polymer electrolyte membrane fuel cells.

A biological cathode and biological battery system for converting carbon feedstock into organic chemicals and producing electrical current is described. The method involves a biological battery system comprising of a reaction vessel and biological cathode electrode. The organic chemicals are processed in a space having at least one anode and at least one cathode with cathode electrode having biologically active material adjacent to at least one layer of the cathode electrode. The material can be a gel, liquid, or solid. This system can be carried out to process organic waste in an environmentally friendly manner.

A solid oxide fuel cell includes a support of which a main component is a metal, a mixed layer that is provided on the support and includes a metallic material and a ceramics material, an intermediate layer that is provided on the mixed layer and includes an electron conductive ceramics material, and an anode that is provided on the intermediate layer and includes an oxygen ion conductive ceramics material and Ni. A ratio of a metal component in the intermediate layer is smaller than a ratio of the metallic material in the mixed layer.

The present specification relates to a method for manufacturing an electrode, an electrode manufactured by the same, an electrode structure including the electrode, a fuel cell or a metal-air secondary battery including the electrode, a battery module including the fuel cell or the metal-air secondary battery, and a composition for manufacturing an electrode.

The present specification relates to a method for manufacturing an electrode, an electrode manufactured by the same, an electrode structure including the electrode, a fuel cell or a metal-air secondary battery including the electrode, a battery module including the fuel cell or the metal-air secondary battery, and a composition for manufacturing an electrode.

Provided is an electrode catalyst in which the contents of chlorine (Cl) species and bromine (Br) species are reduced to a predetermined level or lower, capable of exhibiting sufficient catalyst performance. The electrode catalyst has a core-shell structure including a support, a core part formed on the support and a shell part formed to cover at least a part of the surface of the core part. A concentration of bromine (Br) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 400 ppm or less, and a concentration of chlorine (Cl) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 900 ppm or less.

Provided is an electrode catalyst in which the contents of chlorine (Cl) species and bromine (Br) species are reduced to a predetermined level or lower, capable of exhibiting sufficient catalyst performance. The electrode catalyst has a core-shell structure including a support, a core part formed on the support and a shell part formed to cover at least a part of the surface of the core part. A concentration of bromine (Br) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 400 ppm or less, and a concentration of chlorine (Cl) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 900 ppm or less.

A method of preparing an electrode for use in a biophotovoltaic device, comprising the steps of: coating a self-assembled film on a substrate using Langmuir-Blodgett technique; and immersing the coated substrate into an microalgae culture, followed by incubating thereof to grow microalgae thereon hence obtaining a biofilm, characterised in that the self-assembled film is derived from graphene.