| Catalogue Code | IN-CrLaSr |
| CAS No. | 7789-06-02 |
| Chemical Formula | LaxSr1-xCr oxide |
| Compound Name | Lanthanum Strontium Chromate |
Introduction
Lanthanum Strontium Chromate (LaₓSr₁₋ₓCrO₃) is a valuable material for fuel cell applications, particularly in solid oxide fuel cells (SOFCs). This compound combines lanthanum and strontium with chromium oxide to offer superior ionic conductivity, high-temperature stability, and excellent electrochemical properties. Lanthanum Strontium Chromate is primarily used as a cathode material, where it enhances energy conversion efficiency by facilitating the movement of oxygen ions and supporting redox reactions. Its ability to withstand high operating temperatures and resist chemical degradation ensures reliable performance over extended periods. The material’s thermal expansion characteristics and ionic transport capabilities also make it ideal for demanding environments in fuel cell systems. The purity of the material plays a crucial role in optimizing performance, with higher purity compositions offering improved efficiency and durability in fuel cell applications.
Properties of Lanthanum Strontium Chromate
The properties of Lanthanum Strontium Chromate are as follows:
| Properties | Details |
| Appearance | Powder |
| Molar Mass | 238.9 g/mol. |
| Thermal Conductivity | 51 W/m·K |
| Melting Point | 2450 °C |
Applications
Some of the applications of Lanthanum Strontium Chromate or LaxSr1-xCrO₆ include the following:
- Cathode Material SOFC: Lanthanum Strontium Chromate is a cathode material in solid oxide fuel cells. It enhances ionic conductivity and thermal stability to increase energy conversion efficiency.
- Oxygen Reduction Reaction (ORR): In SOFCs, Lanthanum Strontium Chromate plays a crucial role in facilitating the oxygen reduction reaction (ORR) at the cathode, critical for improving the fuel cell’s electrochemical efficiency.
- High-Temperature Electrochemical Devices: Oxygen pumps, sensors, and electrolyzers with outstanding electrochemical performance and excellent thermal stability are used. These devices are helpful in fuel cell operations.
- Enhanced Fuel Cell Durability: The material’s stability at high temperatures helps extend the operational life of SOFC systems under high thermal and mechanical stress, improving fuel cell durability and efficiency.
- Thermal Barrier Coatings: The material is used as a thermal barrier coating on fuel cell components, providing added protection against high temperatures and improving the overall stability of the fuel cell system.
FAQs
Answere: Lanthanum strontium chromate primarily serves as a cathode material in solid oxide fuel cells (SOFCs) and is also used in high-temperature electrochemical devices and advanced ceramics.
Answere: Yes, Lanthanum Strontium Chromate is generally compatible with common fuel cell materials, particularly other cathode materials. It is often used with electrolyte materials like YSZ (yttria-stabilized zirconia) in SOFCs.
Answere: Lanthanum Strontium Chromate is chemically unstable when exposed to certain reactive species in the fuel cell environment. Researchers are working to optimize its formulation to enhance its long-term durability.
sachin
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