In-Operando Raman Spectroscopy Study of Passivation Effects on Ni-CGO Electrodes in CO 2 Electrolysis Conditions
In-Operando Raman Spectroscopy Study of Passivation Effects on Ni-CGO Electrodes in CO 2 Electrolysis Conditions
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CO 2 电解条件下 Ni-CGO 电极钝化效应的现场拉曼光谱研究
DOI：
10.1149/05701.3111ecst
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Duboviks V
中科院分区：
文献类型：
--
作者：
Duboviks V
镍基固体氧化物燃料/电解电池电极通常针对燃料电池运行进行优化，而不考虑特定的电解条件。采用原位拉曼光谱来研究此类电极在电解模式下操作期间表面化学发生的变化。证明了 CO2 电解后镍钆掺杂二氧化铈电极上的碳沉积。空间分辨拉曼光谱已被证明可以为电极优化提供有价值的见解。异位拉曼光谱与高分辨率显微镜结合使用，以进一步表征操作过程中电极内发生的变化。
Ni-based solid oxide fuel/electrolysis cell electrodes are often optimized for fuel cell operation without consideration of electrolysis-specific conditions. In-situ Raman spectroscopy was employed to investigate changes that occur in the surface chemistry of such electrodes during operation in electrolysis mode. Carbon deposition on Ni-gadolinium-doped ceria electrodes after CO2 electrolysis was demonstrated. Spatially resolved Raman spectroscopy has been shown to provide valuable insight into electrode optimization. Ex-situ Raman spectroscopy was used in conjunction with high resolution microscopy in order to further characterize the changes occurring within the electrodes during operation.