B2O3引入量对SiO2-Al2O3-BaO-CaO-B2O3系封接玻璃性能影响  

Influence of B2O3 Content on Properties of SiO2-Al2O3-BaO-CaO-B2O3 Seal Glass

作　　者：罗凌虹 刘亮光 程亮 王乐莹 秦莹 LUO Linghong;LIU Liangguang;CHENG Liang;WANG Leying;QIN Ying(Jiangxi Provincial Key Laboratory of Fuel Cell Material and Devices, Jingdezhen Ceramic Institute, Jingdezhen 333000, China)

机构地区：[1]景德镇陶瓷大学江西省燃料电池材料与器件重点实验室

出　　处：《建筑材料学报》2019年第5期742-749,共8页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51662015,51802132,51762026);江西省教育厅科技落地计划(KJLD13072)

摘　　要：采用传统工艺制备出B2O3引入量分别为0,5.6,11.2,16.8g的SiO2-Al2O3-BaO-CaO-B2O3固体氧化物燃料电池(SOFC)封接玻璃,并通过傅里叶红外光谱仪(FTIR)、高温显微镜(HSM)、X射线衍射仪(XRD)、热膨胀仪、电化学工作站及扫描电镜(SEM)等手段,系统研究了B2O3引入量对SOFC封接玻璃结构与封接性能(润湿性和玻璃粉烧结性、玻璃特征温度以及玻璃析晶所产生的热膨胀系数变化、玻璃-陶瓷的电性能和封接界面稳定性)的影响.结果表明:随着B2O3引入量的增加,SOFC封接玻璃结构中的[BO3]含量不断增加,[SiO4]含量不断减少;SOFC封接玻璃封接性能的变化规律取决于其结构的变化,其中B2O3引入量分别为11.2,16.8g的玻璃性能满足实际SOFC封接玻璃的要求,可用于实际SOFC单电池的封接.The SiO2-Al2O3-BaO-CaO-B2O3sealing glasses with 0,5.6,11.2,16.8 gB2O3 addition in solid oxide fuel cell(SOFC) were prepared by a conventional route. The effects of B2O3 content on the structure and sealing performance of the glasses(the wettability;the sintering of glass powder;the characteristic temperature of glass and change in thermal expansion coefficient caused by crystallization;the electric properties and sealing surface stability of glass-ceramic) were researched systemically by Fourier infrared spectrum(FTIR), high temperature microscope(HSM), X-ray diffraction(XRD), thermal expansion instrument, electrochemical workstation and scanning electron microscope(SEM). The results indicate that the content of[BO3] increases, but the [SiO4] decreases with the B2O3 content increasing;the variation rule of sealing properties in four kinds of glass depend on the change of their structure, and the glasses with 11.2,16.8 g B2O3 addition meet the requirements for SOFC sealing glass, which can be used for the sealing of SOFC single battery.

关 键 词：B2O3 固体氧化物燃料电池 封接玻璃 玻璃-陶瓷 

分 类 号：TQ171[化学工程—玻璃工业]