CAS OpenIR
Thermal cycling stability of novel hexagonal boron nitride (h-BN)/glass compressive seals for planar intermediate temperature solid oxide fuel cells
Li, Ruizhu1; Wang, Xiaochun1; Peng, Lian2; Jiang, Bowen1; Yang, Jiajun1; Yan, Dong1; Pu, Jian1; Chi, Bo1; Li, Jian1
2020-11-30
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume843Pages:7
AbstractThe novel h-BN/glass compressive seals were investigated for use in solid oxide fuel cell. The glass was mixed with h-BN powders to obtain composite materials using tape casting technique. Leakage rates were measured below 0.012 sccm/cm under input gas pressure of 6.8 kPa. Seals containing 40% by weight glass showed excellent thermal cycle and long-term operation stability. The leakage rates were reduced by more than half after ten thermal cycles under different input gas pressure. Also, the leakage rates gradually decreased to 0.008 sccm/cm under input gas pressure of 20.4 kPa at 750 degrees C during 208 h, and then remained stable. These observations can be explained by liquid B2O3 films having gradually formed on the h-BN surface. Boron oxidation effectively improved bondage for both interface and interior particles. This phenomenon was interpreted by seals' microstructure analyses and transmission electron microscopy. Finally, an evolution model is proposed to explain the process. (C) 2020 Elsevier B.V. All rights reserved.
KeywordSolid oxide fuel cell Seals Leakage rates Boron nitride Thermal cycle stability
DOI10.1016/j.jallcom.2020.155620
Language英语
WOS KeywordGLASS-CERAMIC SEALANT ; COMPOSITE SEALS ; OPTIMIZATION
Funding ProjectNational Science Foundation of China[51572099] ; National Science Foundation of China[51772114] ; National Defense Pre-Research Foundation of China[61402710102] ; National Key Research & Development Project-International Cooperation Program[2016YFE0126900]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Science Foundation of China ; National Defense Pre-Research Foundation of China ; National Key Research & Development Project-International Cooperation Program
WOS IDWOS:000554894500004
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41572
Collection中国科学院过程工程研究所
Corresponding AuthorPu, Jian
Affiliation1.Huazhong Univ Sci & Technol, Wuhan, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, Ruizhu,Wang, Xiaochun,Peng, Lian,et al. Thermal cycling stability of novel hexagonal boron nitride (h-BN)/glass compressive seals for planar intermediate temperature solid oxide fuel cells[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,843:7.
APA Li, Ruizhu.,Wang, Xiaochun.,Peng, Lian.,Jiang, Bowen.,Yang, Jiajun.,...&Li, Jian.(2020).Thermal cycling stability of novel hexagonal boron nitride (h-BN)/glass compressive seals for planar intermediate temperature solid oxide fuel cells.JOURNAL OF ALLOYS AND COMPOUNDS,843,7.
MLA Li, Ruizhu,et al."Thermal cycling stability of novel hexagonal boron nitride (h-BN)/glass compressive seals for planar intermediate temperature solid oxide fuel cells".JOURNAL OF ALLOYS AND COMPOUNDS 843(2020):7.
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