Hostname: page-component-89b8bd64d-dvtzq Total loading time: 0 Render date: 2026-05-10T07:13:01.275Z Has data issue: false hasContentIssue false

Surface segregation and poisoning in materials for low-temperature SOFCs

Published online by Cambridge University Press:  10 September 2014

John Druce
Affiliation:
International Institute for Carbon Neutral Energy Research, Kyushu University, Japan; john.druce@i2cner.kyushu-u.ac.jp
Helena Téllez
Affiliation:
International Institute for Carbon Neutral Energy Research, Kyushu University, Japan; htellez@i2cner.kyushu-u.ac.jp
Junji Hyodo
Affiliation:
Department of Applied Chemistry, Kyushu University, Japan; hyodo_j@cstf.kyushu-u.ac.jp
Get access

Abstract

Surfaces and interfaces determine the performance and long-term durability of solid-oxide fuel cells (SOFCs). In most cases, the surface chemical composition of the materials used in these electrochemical energy conversion devices shows significant deviations from the bulk chemistry. This might be as a result of surface cation segregation processes, as well as long-term surface poisoning due to external impurities. Both processes have implications for the electrochemical performance of the devices, leading to the degradation of the cell components. In order to suppress this degradation, an effort to lower the operation temperature to 500–800°C has been made. This article provides an overview of present research progress related to surface segregation and poisoning for low-temperature SOFCs.

Information

Type
Research Article
Copyright
Copyright © Materials Research Society 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable