| 中温固体氧化物燃料电池复合阴极La1.6Sr0.4NiO4-Ce0.9Gd0.1O1.9的制备及性能研究 | |
| Preparation and Electrochemical Properties of Composite Cathode La1.6Sr0.4NiO4-Ce0.9Gd0.1O1.9 for IT-SOFC | |
| 摘要: | |
| 关键词: 中温固体氧化物燃料电池 复合阴极 LSN-CGO | |
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| Abstract: Composite cathodes consisting of -La1.6Sr0.4NiO4(LSN) and -Ce0.9Gd0.1O1.9(CGO) has been prepared for intermediate temperature solid oxide fuel cell (IT-SOFC). The chemical stability, microstructures and electrochemical performance of the cathode have been investigated using XRD, SEM and AC impedance spectroscopy. Results showed that strong bonding was formed between the composite electrodes and CGO electrolytes after the electrodes were fired at 1 050 ℃ for 4 hours. The polarization resistance changed with oxygen partial pressure, suggesting that charge transfer process was the rate limiting step for electrochemical oxygen reduction at the composite cathodes. Area specific resistance (ASR) for a LSN-40CGO composite cathode was 0.76 Ω·cm2 at 700 ℃, which was four times lower than that of a pure LSN cathode. 1.7％ decrease of the cathode current density was observed in the stability test of the composite cathode. | |
| Keywords: intermediate temperature solid oxide fuel cell (IT-SOFC) composite cathode LSN-CGO | |
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| 李强,范勇,孙丽萍,赵辉,霍丽华,高山,Jean-ClaudeGrenier.中温固体氧化物燃料电池复合阴极La1.6Sr0.4NiO4-Ce0.9Gd0.1O1.9的制备及性能研究[J].无机化学学报,2007,23(2):300-304. | |
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