The Electrochemical Conversion of Carbon Dioxide on Cu?Ni Stacked Bilayer Electrodes
The Electrochemical Conversion of Carbon Dioxide on Cu?Ni Stacked Bilayer Electrodes
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二氧化碳在Cu?Ni堆叠双层电极上的电化学转化
DOI：
10.1149/08801.0361ecst
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Noda Masaru
中科院分区：
文献类型：
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作者：
Yoshihara Naoki;Saito Hiroki;Noda Masaru
二氧化碳（CO2）电化学转化的产物选择性强烈地依赖于电极金属。由于每种金属导致特征产物组成，因此需要多金属复合电极用于通过CO2转化选择性地形成产物。在这里，我们显示了在Cu-Ni堆叠双层电极上烃形成的电流效率为56.2%的选择性CO2转化。有趣的是，较薄的Ni堆叠电极在将CO2转化为烃方面显示出比原始Cu电极更高的选择性，而在具有较厚Ni沉积的那些电极上或在原始Ni电极上没有烃形成。我们还证明了支撑Cu电极的晶体结构对CO2转化活性有显著贡献，进一步证实了Cu-Ni堆叠双层电极中Cu和Ni的结构排列的重要性。
The product selectivity in the electrochemical conversion of carbon dioxide (CO2) strongly depends on the electrode metal. As each metal leads to a characteristic product composition, a multimetallic composite electrode is required for the selective product formation by CO2 conversion. Here, we show the selective CO2 conversion with a current efficiency of 56.2% for the hydrocarbon formation on the Cu–Ni stacked bilayer electrodes. Interestingly, a thinner Ni stacked electrode shows higher selectivity in converting CO2 to hydrocarbons than pristine Cu electrodes, while no hydrocarbon formation carries out on those with thicker Ni deposition or on pristine Ni electrodes. We also demonstrate that the crystal structure of the support Cu electrode significantly contributes to the activity of CO2 conversion, further confirming the importance of the structural arrangement of Cu and Ni in the Cu–Ni stacked bilayer electrodes.