Studies on Dual Phase Ceria-based Composites in Electrochemistry
Küçük Resim Yok
Tarih
2006
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELECTROCHEMICAL SCIENCE GROUP
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The ceria-based dual-phase composites have been recently developed as functional electrolytes successful for intermediate and low temperature solid oxide fuel cell applications. These composite materials showed many unique advantages over the conventional single-phase electrolytes, such as superionic conduction in two-phase interfaces, dual proton and oxygen ion conduction resulting in extremely high ion conductivity and high current outputs in fuel cell and other applications, e. g. electrolysis. Interfacial superionic conduction is a characteristic for high conducting dual-phase composites. The composite approach can combine or integrate multi-ion functions, typically, dual H(+) and O(2-)conduction together to enhance the material conductivity and device performance. Dual or hybrid H+ and O(2-)conduction is based on a consideration that both proton (H+) and oxygen ion (O(2-)) are the fuel cell source ions. Proton conduction is important for LTSOFCs since it can be activated easier than oxygen ions in the low temperature (LT, 300-600 degrees C) region. The superionic conduction, dual phase proton and oxygen ion transport make significant conduction and electrical contributions for electrochemical devices. This paper makes a review on these recent studies.
Açıklama
Anahtar Kelimeler
fuel cell, ceria-composite electrolytes, proton and oxygen ion conduction
Kaynak
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
Cilt
1
Sayı
8
