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Facile soft chemical synthesis and physico-chemical characterisation of ceria based novel ceramic nanocomposite electrolyte for LTSOFC application

ABSTRACT The current study is mainly focused on the preparation of new ceramic electrolyte material based on doped cerium oxide nanocomposite for low-temperature solid oxide fuel cell (LTSOFC) application. The nanocomposite material with composition Ce0.95Nd0.05O2-δ-Ce0.95Gd0.05O2-δ (CNO-CGO) was prepared by a simple cost effective soft chemical precipitation method. The structural, morphological properties and thermal properties of the synthesised nanocomposite material were studied. The mass variation and heat flow rate of CNO-CGO precursor were studied using TGA-DSC analysis. A single fluorite cubic phase structure was revealed by XRD. The surface was studied using SEM resulting in a uniform spherical shape with the agglomerated tightly packed structure without any pores. The presence of a single crystalline phase and the distorted cubic structure was observed by HR-TEM. The nanocomposite was uniaxially pressed and sintered to study the microstructural characteristics. The obtained results were discussed in order to use the material as an efficient electrolyte for LTSOFC application.