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Electroreduction of CO on Polycrystalline Copper at Low Overpotentials
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-02-08 00:00:00 , DOI: 10.1021/acsenergylett.8b00092
Erlend Bertheussen 1 , Thomas V. Hogg 1 , Younes Abghoui 1, 2 , Albert K. Engstfeld 1, 3 , Ib Chorkendorff 1 , Ifan E. L. Stephens 1, 4
Affiliation  

Cu is the only monometallic electrocatalyst to produce highly reduced products from CO2 selectively because of its intermediate binding of CO. We investigate the performance of polycrystalline Cu for the electroreduction of CO in alkaline media (0.1 M KOH) at low overpotentials (−0.4 to −0.6 V vs RHE). We find that polycrystalline Cu is highly active at these potentials. The overall CO reduction rates are comparable to those of the nanostructured forms of the material, albeit with a distinct product distribution. While nanostructured forms of Cu favor alcohols, polycrystalline Cu produces greater amounts of C2 and C3 aldehydes, as well as ethylene.

中文翻译:

低电位下多晶铜上CO的电还原

铜是唯一能够选择性地从CO 2选择性还原高度还原的产物的单金属电催化剂,因为其与CO之间存在中间键合。我们研究了多晶Cu在低过电势(-0.4到0.40 KOH)下在碱性介质(0.1 M KOH)中对CO进行电还原的性能。 −0.6 V vs RHE)。我们发现多晶铜在这些电位下具有很高的活性。尽管具有明显的产品分布,但总的CO降低率与材料的纳米结构形式相当。Cu的纳米结构形式有利于醇,而多晶Cu则产生更多的C 2和C 3醛以及乙烯。
更新日期:2018-02-08
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