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Effects of manganese oxides on the activity and stability of Ni-Ce0.8Sm0.2O1.9 anode for solid oxide fuel cells with methanol as the fuel
Catalysis Today ( IF 5.3 ) Pub Date : 2018-01-11 , DOI: 10.1016/j.cattod.2018.01.014
Tian Gan , Guochang Ding , Boran Chen , Xiaojing Zhi , Ping Li , Xueli Yao , Nianjun Hou , Lijun Fan , Yicheng Zhao , Yongdan Li

Ni-MnOx-Ce0.8Sm0.2O1.9 (SDC) composites are synthesized and investigated as anode materials of solid oxide fuel cells fed with methanol. The lowest anodic polarization resistance is obtained when the molar ratio of Mn to Ni is 0.05:0.95. The high catalytic activity is attributed to the transfer of electrons from Ni to Mn and the increase of the content of the lattice oxygen in the anode. The single cell with that anode and SDC-carbonate composite electrolyte exhibits a maximum power density of 722 mW cm−2 at 700 °C. Mn also increases the resistance to carbon deposition of the anode due to the high lattice oxygen content and the redox cycle of the Mn species. The stability of the single cell is enhanced with the increase of the content of Mn in the anode.



中文翻译:

氧化锰对以甲醇为燃料的固体氧化物燃料电池Ni-Ce 0.8 Sm 0.2 O 1.9阳极活性和稳定性的影响

合成并研究了Ni-MnO x -Ce 0.8 Sm 0.2 O 1.9(SDC)复合材料,将其作为固体氧化物燃料电池的甲醇负极材料。当Mn与Ni的摩尔比为0.05∶0.95时,获得最低的阳极极化电阻。高催化活性归因于电子从Ni转移到Mn以及阳极中晶格氧含量的增加。具有该阳极和SDC-碳酸盐复合电解质的单电池的最大功率密度为722 mW cm -2在700°C下。由于高晶格含氧量和Mn物种的氧化还原循环,Mn还增加了对阳极碳沉积的抵抗力。随着阳极中Mn含量的增加,单电池的稳定性得到增强。

更新日期:2018-01-11
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