Tin was electrodeposited for the first time on copper electrode with different pulse current densities and cycle times. The optimized one (namely CuSn (30–12C) ) has a rougher surface, a smaller electron transport resistance, and a larger electrochemical surface area than others, exhibiting the best catalytic activity, a faster Faraday process, and the highest selectivity for the production of HCOO − in ERCO 2 . At −1.6 V vs SCE, a HCOO − Faraday efficiency of 84.5% was achieved and the current density was 45.4 mA cm −2 at −2.0 V vs SCE. In addition, this optimized electrode also has a catalytic stability of up to 23 h.

中文翻译：

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铜电极上脉冲电沉积Sn的CO 2转化反应

首次以不同的脉冲电流密度和循环时间将锡电沉积在铜电极上。经过优化的一种（即CuSn（30–12C））具有比其他表面更粗糙的表面，更小的电子传输阻力和更大的电化学表面积，表现出最佳的催化活性，更快的法拉第工艺和最高的生产选择性ERCO 2中HCOO-的含量。在相对于SCE的-1.6 V下，达到HCOO-法拉第效率为84.5％，并且在相对于SCE的-2.0 V下，电流密度为45.4 mA cm -2。此外，这种优化的电极还具有长达23小时的催化稳定性。