Solid Oxide Electrolysis Cell with Cathode and Method

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

This invention relates to a solid oxide electrolysis cell (SOEC) with a specially designed fuel electrode composed of strontium, iron, molybdenum oxides (Sr2Fe2-xMoxO6-δ) and optionally doped with metals such as nickel, cobalt, titanium, manganese, or copper. The cell is built to efficiently conduct electricity and ions at high temperatures and is particularly designed to improve performance and lifespan when operating as an electrolysis cell to convert gases (like CO2 or H2O) into useful products such as hydrogen or carbon monoxide. The invention also details a method for operating the cell at temperatures between 600°C and 900°C, providing higher performance and durability than existing technologies.

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

• Hydrogen production via high-temperature water electrolysis for clean energy applications.
• Electrolytic conversion of carbon dioxide into carbon monoxide or synthesis gas for fuel and chemical production, supporting carbon recycling and CO2 utilization technologies.
• Industrial power-to-gas or power-to-liquid plants that store excess renewable electricity as chemical energy.
• Fuel cell systems for high-efficiency power generation from hydrogen or synthesis gas.
• Decentralized generation of hydrogen or syngas for use in chemical, steel, or fertilizer industries.
• Integration in renewable energy infrastructures as a means to balance and store energy by producing storable gases.

BenefitsContent extracted from patent full text and abstract with AI.

• Improved electrolysis cell durability and long-term stability, especially under harsh operating conditions.
• Higher electrochemical performance compared to conventional nickel-based cells, leading to increased efficiency and output.
• Greater resistance to degradation (lower performance loss) over time, reducing maintenance and replacement costs.
• Ability to efficiently process a wide range of gases such as H2O, CO2, and hydrocarbon-based gases.
• Reduced reliance on high-content nickel electrodes, which can be sensitive and costly.
• Cell materials (like Sr2Fe2-xMoxO6-δ with specific dopants) allow for tuning of properties and better match of thermal expansion coefficients, minimizing mechanical failure risk.
• Operational flexibility for both electrolysis and fuel cell modes, providing versatility for energy systems.

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Inventors & Applicants

Patent Abstract

The invention relates to a solid oxide cell with an electrolyte (2), wherein gas-permeable electrodes (1, 3) are attached on opposite sides of the electrode (2), wherein the fuel electrode (1) comprises Sr2Fe2-xMoxO6-δ or Sr2Fe2-xMox-yMyO6-δ, where M = nickel (Ni), and/or cobalt (Co), and/or titanium (Ti), and/or manganese (Mn) and/or copper (Cu). The invention also relates to a method for operating the solid oxide cell.