管式SOFC陶瓷连接体的浸渍法制备与共烧

Dip-coating and Co-sintering of Ceramic Interconnect for Tubular SOFC

讨论了采用一步浸渍法在管式固体氧化物燃料电池(SOFC)的NiO-YSZ阳极上制作致密La0.8Sr0.2Cr0.5Fe0.5O3-δ(LSCrF)陶瓷连接体薄膜的可行性;实现了阳极素坯与连接体的共烧,可简化燃料电池的制作过程并降低成本。采用柠檬酸盐法合成LSCrF粉体,利用XRD对合成粉体的物相进行分析,采用马尔文Mastersizer 2000-激光粒度仪对球磨后粉体的粒度分布进行测试。实验结果表明,经700℃煅烧的粉体,再经过12 h球磨之后,可以成功地用浸渍法沉积到NiO-YSZ支撑阳极,在1400℃下共烧结而得到致密的连接体薄膜。

A cost-effective method was developed to fabricate dense La0.8Sr0.2Cr0.5Fe0.5O3-δ（LSCrF） interconnect membrane on NiO-YSZ anode substrate for tubular solid oxide fuel cell （SOFC） applications by one-step dip-coating, and co-sintering of the ceramic interconnect with the anode. The LSCrF powder was synthesized with citric acid assisted sol-gel method, the phase structure was characterized by an XRD, and the particle size distribution of the ball-milled powder was analyzed by a Mastersizer 2000 analyzer. It can be concluded that with the powder calcined at 700℃and ball-milled for 12 h, LSCrF iflm can be successfully prepared on the anode support of NiO-YSZ by a dip-coating process. After being co-sintered at 1400℃, a dense LSCrF interconnect membrane can be obtained.