2010 Fiscal Year Final Research Report
Activity of methane oxidation by the cermet anode highly-dispersed with solid-solution alloy particles
| Project/Area Number |
20360327
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
SATO Kazunori Nagaoka University of Technology, 工学部, 教授 (20143828)
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| Co-Investigator(Kenkyū-buntansha) |
TEOH Wahtzu 長岡技術科学大学, 工学部, 助教 (10452088)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 電極触媒 / 固体酸化物燃料電池 / メタン |
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| Research Abstract |
Substitution of Co atoms for Ni atoms in the Ni-based cermet anode resulted in a decrease in the anodic overvoltage and interfacial resistance between the anode and electrolyte. This effect has been confirmed for a samaria-doped ceria (SDC) electrolyte and a scandia-stabilized zirconia (ScSZ) electrolyte. The results of electrochemical measurements revealed that the enhancement of the direct oxidation of methane was caused by the modification of microstructure in the cermet anode. Based on the experimental results a model for the anodic oxidation mechanism at the interface between the anode and electrolyte is proposed. The adsorptive abilities of Ni_<1-x>Co_x-YSZ and Ni_<1-x>Co_x-CeO_2 cermet particles for CH_4 and CO were affected by the amount of the Co atoms substituted for the Ni atoms.
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