Sn_(0.95)Mg_(0.05)P_2O_7的中温电性能研究 |
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引用本文: | 韩 燕,邹 影,李 红,王洪涛.Sn_(0.95)Mg_(0.05)P_2O_7的中温电性能研究[J].广州化工,2014(2):42-43,80. |
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作者姓名: | 韩 燕 邹 影 李 红 王洪涛 |
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作者单位: | 阜阳师范学院化学化工学院,安徽阜阳236041 |
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基金项目: | 安徽高校省级自然科学研究项目(No.KJ20138193);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. |
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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H2气氛中,Sn0.95Mg0.05P2O7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7.9 mW·cm-2,150℃时其最大输出功率密度约为12.7 mW·cm-2,175℃其最大输出功率密度为19.1 mW·cm-2。
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关 键 词: | Sn.Mg.PO 交流阻抗 电导率 燃料电池 |
Intermediate Temperature Electrical Properties of Sno.95Mg0.05P2O7 |
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Affiliation: | HAN Yan, ZOU Ying, LI Hong, WANG Hong- tao (College of Chemistry and Chemical Engineering, Fuyang Teachers College, Anhui Fuyang 236041, China) |
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Abstract: | 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. |
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Keywords: | Sn0 95 Mg0 05 P2O7 AC impedance conductivity fuel cell |
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