An improved process for the manufacture of strontium doped lanthanum manganite (LSM) ceramic powder suitable for solid oxide fuel cell (SOFC) applications

摘要

In the present invention the process involves microwave-assisted sol-gel for the synthesis of LSM powder in which the constituent raw materials are added into distilled water to form a sol, from which a gel is obtained. Further this gel is dehydrated by heating in a microwave oven, followed by calcination and grinding to get the LSM powder. Use of microwave energy for dehydration of gel reduces the processing time significantly resulting in good quality LSM powder. High purity and good homogeneity of the final product are ensured in the process of the present invention even at lower processing temperatures.