Research Progress of the Sealing Glass for Intermediate Temperature Solid Oxide Fuel Cell

doi:10.15541/jim20140300

Abstract

Abstract:

Sealing glass plays a crucial role in the intermediate temperature solid oxide fuel cell (IT-SOFC). A sealing glass should have a combination of desired thermal, chemical and mechanical properties and good adhesive ability with other cell’s components in order to prevent gas leakage during the working of the IT-SOFC. It has to be a long-term thermal stability and interface chemical stability with other cell’s components at the operating temperatures with an oxidizing or reducing atmospheres, respectively. In this paper, the research progress of the sealing glass in recent ten years was reviewed. From the point of the properties of sealing glass and the interfacial reactions with other cell’s components, relations of the composition-structure-property were discussed. Main problems on current research of sealing glass of IT-SOFC were put forward.

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Key words: intermediate temperate solid oxide fuel cell, seal glass, glass property, thermal stability, interface reaction, review

CLC Number:

TQ174

LUO Ling-Hong, YU Hui, HUANG Zu-Zhi. Research Progress of the Sealing Glass for Intermediate Temperature Solid Oxide Fuel Cell[J]. Journal of Inorganic Materials, 2015, 30(2): 113-121.

Figures/Tables 7

Fig. 1 Tg and Ts as a function of B2O3/SiO2 ratio in a SrO- La2O3-Al2O3-B2O3-SiO2 glass[18]

Fig. 2 Variation of Tg and Ts with (Na2O+K2O)/(CaO+MgO) molar ratio in silicate glass composition[20]

Fig. 3 CTE as a function of B2O3/SiO2 ratio in SrO-La2O3- Al2O3-B2O3-SiO2 glass [31]

Fig. 4 Devitrification temperature change with B2O3/SiO2 ratio in BaO-Ca-Al2O3-B2O3-SiO2 glasses[38]

Fig. 5 (a) SEM image of the anode, (b)EDS pattern of the same region as in (a) (Zr is green, Ni is yellow, and Si is red). For clarity the element pattern for Al and Na have not been overlaid) and (c) EDS point analysis of the Na and Al containing silicate impurity closest to the electrolyte in (b) [49]

Fig. 6 Interfacial reactions between G18 sealing glass and stainless steel Crofer22 APU were joined with G18 through heat treatment at 850℃ for 1 h, followed by 750℃ for 24 h[57]

Fig. 7 Cross-section view of the glass/metal interface[60] (a) Without treatment, and (b) Crofer22 APU surface coated with MnCo2O4

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