Improving the performance of SOFC anodes by decorating perovskite with Ni nanoparticles

Samir Boulfrad; Mark Cassidy; Enrico Traversa; John T S Irvine

doi:10.1149/05701.1211ecst

Improving the performance of SOFC anodes by decorating perovskite with Ni nanoparticles

Samir Boulfrad, Mark Cassidy, Enrico Traversa, John T S Irvine

Research output: Contribution to journal › Article › peer-review

Abstract

In this work (La_0.75Sr_0.25)_0.97Cr _0.5Mn_0.5O₃ (LSCM) perovskite powders were pre-coated with 5 wt% nickel and mixed with different amounts of CGO for testing as anode materials under 3% wet H₂. By using scanning transmission electron microscopy (STEM) with X-ray energy dispersive spectroscopy (EDS), we demonstrated that Ni forms a solid solution in the perovkite phase under oxidizing atmosphere and exsolves in form of nanoparticles under reducing atmospheres. The presence of the catalyst nanoparticles led to a decrease in the anodic activation energy by half and thus the polarization resistance was dropped by 60% at 800°C. The effect of CGO amount will be also discussed.

Original language	English
Pages (from-to)	1211-1216
Number of pages	6
Journal	ECS Transactions
Volume	57
Issue number	1
DOIs	https://doi.org/10.1149/05701.1211ecst
Publication status	Published - 1 Jan 2013

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Improving the performance of SOFC anodes by decorating perovskite with Ni nanoparticles

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