中温固体氧化物直接乙醇燃料电池研究

中温固体氧化物直接乙醇燃料电池研究董笑，李永丹*

（天津化学化工协同创新中心，化学工程联合国家重点实验室（天津大学），天津市应用催化科学与

工程重点实验室，天津大学，天津300072，E-mail:ydli@ ）

氢气作为燃料电池最广泛使用的燃料，面临生产成本高、储运困难等应用问题；而碳氢化合物等非氢燃料能够避免这些问题，并有着更高的整体效率，因此得到了很多关注[1]。常用的镍基金属陶瓷阳极虽然活性很高，但是极易积碳失活，导致电池性能下降[2]。本文采用柠檬酸-EDTA 络合法制备了一种稳定的钙钛矿材料Sr 2Fe 1.5Mo 0.5O 6(SFM)用做固体氧化物燃料电池的阳极，并通过丝网印刷法制备了电解质支撑的SFM |La 0.8Sr 0.2Ga 0.83Mg 0.17O 3|Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3(SFM |LSGM |BSCF)单电池片[3,4]。采用氢气和乙醇作为燃料对电池片进行放电测试分别获得了750℃时219.9和293.8mW cm -2，800℃时408.7和484.7mW cm -2的输出性能（如图1）。经过数小时的恒压放电，电池性能基本稳定，且未发生积碳。电池结构有待优化以进一步提高性能，SFM 对乙醇的活化机理也有待进一步探究。

图1单电池片放电性能：1）H 2作燃料；2）C 2H 5OH 作燃料

Fig.1Performances of the single cell using 1)hydrogen and 2)ethanol as fuel.

本研究为国家自然科学基金(21076150，21120102039)资助项目。

参考文献：

[1]McIntosh S,Gorte RJ.Chem.Rev.,2004,104:4845

[2]Gorte RJ,Vohs JM.Annu.Rev.Chem.Biomol.En.,2011,2:9

[3]Wang ZM,Tian Y,Li YD.J.Power Sources,2011,196:6104

[4]Li HJ,Tian Y,Wang ZM,Qie FC,Li YD.RSC Advances,2012,2:3857

Intermediate temperature solid oxide fuel cells directly utilizing ethanol as the fuel

Dong Xiao,Li Yongdan*

(State Key Laboratory for Chemical Engineering (Tianjin University),School of Chemical Engineering and

Technology,Tianjin University,Tianjin,300072,China,E-mail:ydli@)

As the most widely used fuel for fuel cells,hydrogen with its high cost,faces problems on storage and transportation which limit its industry utilization.Non-hydrogen fuels are able to avoid these problems,and have a higher overall efficiency,thus to get a lot of monly used nickel cermet anode has a high activity to hydrocarbon fuels,but suffers serious carbon deposition,leading to anode inactivation and performance degradation.Here,we adopts EDTA-citric acid complexing method to prepare a stable perovskite material Sr 2Fe 1.5Mo 0.5O 6(SFM)as the anode of solid oxide fuel cell,and a single cell with a configuration of electrolyte supported SFM|La 0.8Sr 0.2Ga 0.83Mg 0.17O 3|Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3(SFM|LSGM|BSCF)is fabricated by a screen printing ing hydrogen and ethanol as fuel,the discharge performances were 219.9and 293.8mW cm -2at 750o C,408.7and 484.7mW cm -2at 800o C,respectively.After hours of constant voltage discharge,the

1）2）

performance is basically stable,and no carbon deposition can be observed.The structure of the single cell should be optimized in order to further improve the performance,and the mechanism that how SFM actives ethanol also needs further research.