Electrode Catalyst for Fuel Cell

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention relates to an improved platinum-based electrode catalyst for fuel cells. The core innovation is a method for producing very fine and highly dispersed platinum nanoparticles on carbon carriers. By heat-treating carbon supports with ammonia gas before loading the platinum, the process introduces chemical functional groups that help platinum salt strongly adsorb to the carbon surface and prevent agglomeration during heat treatment. The resulting catalyst has smaller platinum particles with greater electrochemical surface area, thus boosting catalytic activity while reducing the amount of expensive platinum required.

Use CasesContent extracted from patent full text and abstract with AI.

• Polymer electrolyte fuel cells (PEFCs) for vehicles (automobiles, buses, trucks)
• Fuel cell backup and stationary power generation systems
• Portable electronic devices powered by micro fuel cells
• Hydrogen energy infrastructure (e.g., distributed hydrogen fuel cell power sources)
• Aerospace and specialty applications requiring lightweight, efficient power sources

BenefitsContent extracted from patent full text and abstract with AI.

• Reduces platinum usage, lowering manufacturing costs of fuel cells
• Improves efficiency and performance of fuel cells due to higher catalytic activity
• Provides a stable and scalable production method for high-performance catalysts
• Increases the operational life of fuel components by minimizing platinum particle agglomeration
• Enables broader adoption of clean energy technologies by making fuel cells more commercially viable

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Patent Abstract

An object of the present invention is to provide a platinum catalyst for a fuel cell, the platinum catalyst having platinum particles with a fine particle size which are supported on carbon carriers in a highly dispersed manner. To achieve the above object, the present invention provides a method for producing an electrode catalyst for a fuel cell, the method comprising: an ammonia treatment step of heat-treating carbon carriers in an ammonia gas atmosphere; a platinum salt contact step of mixing the carbon carriers treated with ammonia with a solution prepared by dissolving a platinum salt in a solvent and bringing the platinum salt coming into contact with the carbon carriers in the mixture that has been formed; a recovery step of recovering the carbon carriers by removing the solvent from the mixture; and a heat treatment step of heat-treating the recovered carbon carriers in an inert gas atmosphere.