Electrode Material, Method for Its Production, and Its Use

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The patent describes novel electrode materials based on layered perovskite compounds containing nickel, cobalt, lanthanum, praseodymium, and neodymium oxides. These materials exhibit the general formula M2Ni1-xCoxO4+δ or La1-yMyNi1-xCoxO4+δ, with M being Pr or Nd. The invention provides a process to synthesize these materials and uses them as oxygen or air electrodes, particularly in solid oxide fuel cells (SOFCs) and high-temperature electrolyzers (SOECs). The new electrode materials offer improved performance and longer lifespan compared to conventional materials, especially under high-temperature electrolysis conditions.

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• Air (oxygen) electrodes in high-temperature solid oxide electrolyzer cells (SOECs) for the production of hydrogen by water electrolysis.
• Cathode materials for solid oxide fuel cells (SOFCs) for efficient power generation from chemical fuels.
• Electrodes in other electrochemical devices requiring robust, high-temperature, oxygen-evolving or reducing electrodes.
• Integration in renewable energy systems for energy storage via water splitting and hydrogen generation.

BenefitsContent extracted from patent full text and abstract with AI.

• Enhanced electrochemical performance, including higher current density and efficiency at high temperatures.
• Improved long-term durability and lower degradation rates during continuous operation, leading to longer device lifespans.
• The materials allow for tailored properties (e.g., particle size, composition) for optimal electrode fabrication and device integration.
• Compatibility with standard fabrication methods such as screen printing and sintering, aiding flexible manufacturing.
• Potential to improve the energy efficiency and reduce operational costs in hydrogen production and fuel cell power generation.

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Patent Abstract

The application relates to a material for an electrode, the material comprising or consisting of a compound of the formula (1) M2Ni1-xCoxO4+δ (1) and/or of the formula (2) La1-yMyNi1-xCoxO4+δ (2), wherein M represents Pr and/or Nd, 0.0 ≤ x ≤ 0.2, 0.25 ≤ δ ≤ 0.3 and 0