Investigation of factors affecting the performance of a single-layer nanocomposite fuel cell

Sami V. Jouttijärvi, Muhammad Imran Asghar*, Peter D. Lund

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

A large set of single-layer fuel cells utilizing lithium nickel zinc oxide (LNZ) as semiconducting material and doped ceria -based ionic conductors with varying composition were fabricated and characterized by both microscopic and macroscopic methods. Microstructural analysis showed that LiNiO, LiZnO and doped ceria formed crystalline phases, whereas alkali carbonates were in amorphous state. The ionic conductivity of the cell was found to be the most crucial performance-limiting factor. Using of catalytically active current collector improved the cell performance if the ionic conductivity through the cell was suitable. Controlling the porosity and optimizing the mass ratio of semiconductor and ionic conductor affected the cell performance as well. An optimized device achieved a power density of 300 mW/cm2 at 600 °C.

Original languageEnglish
Pages (from-to)104-110
JournalCatalysis Today
Volume364
Early online date1 Jan 2020
DOIs
Publication statusPublished - 15 Mar 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • LNZ
  • Single-layer fuel cell
  • Varying composition

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