Influence of Sintering Temperature on the Structural, Morphological, and Electrochemical Properties of NiO-YSZ Anode Synthesized by the Autocombustion Route

Muneeb Irshad, Muhammad Rafique, Asif Nadeem Tabish, Abdul Ghaffar, Ahmad Shakeel, Khurram Siraj, Qurat ul Ain, Rizwan Raza, Mohammed Ali Assiri, Muhammad Imran

Research output: Contribution to journalArticleScientificpeer-review

18 Downloads (Pure)

Abstract

In this study, nickel oxide–Y2O3-doped ZrO2 (NiO-YSZ) composite powder as an anode material was synthesized using a cost-effective combustion method for high-temperature solid oxide fuel cell (SOFC). Further, the effects of sintering temperatures (1200, 1300, and 1400 °C) were studied for its properties in relation to the SOFC performance. The prepared and sintered NiO-YSZ materials were characterized for their surface morphology, composition, structure, and conductivity. The cubic crystalline nature of NiO and YSZ was sufficed by X-ray diffraction, and SEM images revealed an increase in the densification of microstructure by an increase in the sintering temperature. EDX spectrum confirmed the presence of nickel, yttrium, and zirconia without any impurity. Conductivity measurements, under a hydrogen environment, revealed that NiO-YSZ, sintered at 1400 °C, exhibits better conductivity compared to the samples sintered at lower temperatures. Electrochemical performance of button-cells was also evaluated and peak power density of 0.62 Wcm−2 is observed at 800 °C. The citrate combustion method provided peak performance for cells containing anode sintered at 1200 °C, which was previously reported at higher sintering temperatures. Therefore, the citrate combustion method is found to be a suitable route to synthesize NiO-YSZ at low sintering temperature.
Original languageEnglish
Article number219
Number of pages10
JournalMetals
Volume12
Issue number2
DOIs
Publication statusPublished - 2022

Keywords

  • Autocombustion synthesis
  • Composite
  • Electrochemical performance
  • Microstructure
  • Sintering

Fingerprint

Dive into the research topics of 'Influence of Sintering Temperature on the Structural, Morphological, and Electrochemical Properties of NiO-YSZ Anode Synthesized by the Autocombustion Route'. Together they form a unique fingerprint.

Cite this