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Sn_(0.95)Mg_(0.05)P_2O_7的中温电性能研究

Intermediate Temperature Electrical Properties of Sn_(0. 95)Mg_(0. 05)P_2O_7
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摘要 采用固相法合成了Sn0.95Mg0.05P2O7样品,采用交流阻抗电化学方法对该样品在50~250℃下的电性能进行了研究。粉末XRD结果表明,该样品为单一立方相SnP2O7结构。气体气氛对样品电导率有着显著的影响:σ(dry O2)〈σ(dry H2)〈σ(wet O2)〈σ(wet H2)。在湿润H:气氛中,Sn0.95Mg0.05,P2O7 在200℃下,电导率达到最大值5.9×10^-2S·cm^-1。以该样品为燃料电池固体电解质,组装氢-空气燃料电池,在125℃时最大输出功率密度为7.9mW·cm,150℃时其最大输出功率密度约为12.7mw·cm^-2,175℃其最大输出功率密度为19.1mW·cm^-2。 Sn0.95Mg0.05P207 was synthesized by a solid -state reaction method, and the conduction behaviors were investigated by AC impedance spectroscopy in the temperature range of 50 -250 ℃. The experimental atmosphere remarkably influenced the conductivity in the order of of ( dry O2 ) 〈 σ ( dry H2 ) 〈 σ ( wet O2 ) 〈 σ ( wet Hz ). The highest conductivity was observed to be 5.9 × 10 ^-2 S. cm^-1 under wet H2 atmosphere at 200 ℃. The H2/air fuel cell using Sno.95 Mgo 05P207 as an electrolyte generated a maximum power density of 7.9 mW. cm^-2 at 125 %, 12.7 mW . cm^-2 at 150 ℃ and 19. 1 mW . cm^-2 at 175 %, respectively.
出处 《广州化工》 CAS 2014年第2期42-43,80,共3页 GuangZhou Chemical Industry
基金 安徽高校省级自然科学研究项目(No.KJ2013B193) 安徽环境污染物降解与监测省级实验室专项项目(No.2012HJJC06) 阜阳师范学院校级项目(No.2009FSKJ03) 阜阳师范学院2012博士启动基金项目资助
关键词 Sn0 95Mg0 05P2O7交流阻抗 电导率 燃料电池 Sn0.95 Mg0.05 P2O7 AC impedance conductivity fuel cell
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参考文献9

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