Structured electrode for use in a fuel cell

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

This patent describes a specially structured gas diffusion electrode for use in fuel cells, particularly those operated with liquid fuels such as direct methanol fuel cells. The invention features a porous electrode incorporating macroscopic through-holes perpendicular to the electrode’s surface. These holes, with a cross-sectional area between 0.5 and 4 square millimeters, significantly enhance the distribution and removal of operational fluids and reaction products (like CO2) within the fuel cell, improving performance and efficiency.

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

• Direct methanol fuel cells for portable electronics (e.g., laptops, smartphones)
• Direct ethanol or dimethyl ether fuel cells for automotive and transportation applications
• Formic acid fuel cells for stationary or backup power generation
• Low-temperature fuel cells used in compact or mobile energy systems
• High-efficiency fuel cell stacks for renewable energy storage solutions
• Fuel cells for drones or remote-controlled vehicles where lightweight and efficient energy sources are needed

BenefitsContent extracted from patent full text and abstract with AI.

• Improved distribution and removal of reactants and products within the fuel cell, leading to better overall efficiency
• Reduction in thermal gradients and uneven reactions, which enhances lifetime and safety of the fuel cell
• Simple and cost-effective manufacturing processes (e.g., stamping) to add the desired macrostructure
• Potential for increased cell voltage and power output compared to conventional electrodes
• Adaptability of the electrode structure to different flow dynamics and operating conditions within the cell
• Lowered likelihood of clogging or flooding due to more effective fluid transport through the electrode

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The electrode (2) has a macroscopic through openings (3) that are arranged perpendicular to an electrode surface and comprise identical surfaces. The identical surfaces have a cross section in the range of 0.5 square millimeter and 4 square millimeters. A fluid operating medium is conducted to an electrolyte (1) that is adjacent to the electrode, where the electrode is provided with a porous structure. An independent claim is also included for a method for manufacturing a gas diffusion electrode.