(西安交通大學 材料科學與工程學院 金屬材料強度國家重點實驗室， 西安 710049)
摘 要: 針對傳統(tǒng)管狀與板塊結(jié)構(gòu)SOFC的特點， 提出了集兩種結(jié)構(gòu)設(shè)計的優(yōu)點為一體的金屬陶瓷支撐管狀結(jié)構(gòu)SOFC， 并采用低成本的火焰噴涂與等離子噴涂制備電池各結(jié)構(gòu)層。 采用3種不同成分與結(jié)構(gòu)的陽極探討了陽極結(jié)構(gòu)對電池輸出特性的影響， 結(jié)果表明， 陽極結(jié)構(gòu)對電池運行時的極化產(chǎn)生顯著影響， 采用小顆粒的NiO與YSZ的復合粉末制備的陽極， 可以有效增加陽極的三相界面， 從而降低陽極極化， 顯著提高電池的輸出功率密度， 1000℃時可達到最大值0.57W/cm2。 這些結(jié)果為優(yōu)化電池陽極結(jié)構(gòu)層的設(shè)計與制備提供了依據(jù)。
關(guān)鍵字: 固體氧化物燃料電池； 陽極； 熱噴涂； 三相界面
（State Key Laboratory for Mechanical Behavior of Materials,
School of Materials Science and Engineering, Xi'an Jiaotong University,
Xi'an 710049, China）
Abstract: A cermet supported tubular SOFC was manufactured by thermal spray processes to aim at reducing the production cost. The effect of the anode microstructure on the performance of SOFC was investigated. The results show that the maximum output power density strongly depends on the anode microstructure. The length and density of the three-phase boundaries (TPB) can be increased by decreasing the particle size of YSZ and Ni in composite anode. The performance of SOFC can be improved by modifying the active TPB length and TPB density. It is revealed that the present SOFC of the distributed Ni/YSZ composite anode manufactured by thermal spray process reaches to a maximum output power density of 0.57W/cm2 at 1000℃. All these results can be used for preparation of optimizing the anode structure.
Key words: solid oxide fuel cell; anode; thermal spray; triple-phase boundary
