The role of tape thickness on mechanical properties and performance of electrolyte supports in solid oxide fuel cells
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The change in the mechanical and electrochemical performance of tape cast YSZ electrolyte as a function of doctor blade gap is investigated in this study via mechanical, microstructural and electrochemical analyses. Three point bending tests indicate that the flexural strength of the electrolyte can be improved by reducing the doctor blade gap. This can be elucidated by the microstructural observations, which reveal an increased number of small grains and reduced grain size with decreasing the doctor blade height, confirming the sintering shrinkage. The impedance results reveal that the electrical resistance of the electrolyte increases with decreasing the doctor blade gap due to reduced grain size. Similar behavior is also observed in the performance results. Therefore, the doctor blade gap can be considered as a critical parameter for the mechanical and electrochemical performance of tape cast YSZ electrolyte in solid oxide fuel cells, since it significantly affects the electrolyte microstructure. © 2018 Elsevier Ltd and Techna Group S.r.l.
Açıklama
Anahtar Kelimeler
Doctor Blade gap, Electrochemical performance, Flexural strength, Solid oxide fuel cell, Tape cast electrolyte
Kaynak
Ceramics International
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
44
Sayı
14
