摘要
为了解决固体氧化物燃料电池在高温还原过程会产生的应变对其本身力学性能的影响,研究了固体氧化物半电池的阳极基底还原前后的成分和热膨胀系数的变化,以及电解质薄膜中还原前后残余应力的变化规律.研究结果表明:经还原后,阳极材料中的氧元素重量百分比减少了45.24%;镍元素的重量百分比增加13.64%。阳极基底还原前的平均线膨胀系数为11.3×10-6 K-1,还原后的热膨胀系数为13×10-6 K-1.固体氧化物燃料电池的电解质薄膜还原前残余应力值为压应力812.50MPa,还原后残余压应力减小为394.35MPa,是还原前残余应力的48.54%.
Stress changes would occur in solid oxide fuel cells reduced at high temperature .These changes would directly influence the mechanical properties of SOFC .The component changes and thermal expansion coefficient varieties of the solid oxide fuel cell anode support materials after reduction and the residual stress variation of electrolyte film after reduction have been studied .It obtained that the percentage of the weight of oxygen reduced for 45 .24% .The percentage of weight of nickel increased for 13 .64% .The thermal expansion coefficient of the anode support materials before reduction was 11 .3 × 10-6 K -1 while it was 13 × 10-6 K -1 after reduction .The residual stress of the electrolyte film was 812 .50 MPa .The residual stress achieved 394 .35 MPa after reducing and it was 48 .54% of the electrolyte material before reduction .
出处
《西安工业大学学报》
CAS
2013年第8期652-656,共5页
Journal of Xi’an Technological University
基金
西安工业大学校长科研基金项目(XAGDXJJ1121)
