今日获知，张泽坤同学的论文Controlling the Phase Composition of Pre-catalysts to Obtain Abundant Cu(111)/Cu(200) Grain Boundaries for Enhancing Electrocatalytic CO2 Reduction Selectivity to Ethylene被Small接收。该论文得到国家自然科学基金和西安交通大学基本科研业务费资助，相关表征工作获得西安交通大学分析测试中心支持。论文摘要如下： The preparation of ethylene (C2H4) by electrochemical CO2 reduction (ECO2R) has dramatically progressed in recent years. However, the slow kinetics of carbon-carbon (C-C) coupling remains a significant challenge. We report a generalized facet reconstruction strategy to prepare a three-phase mixed pre-catalyst (Cu3N-300) of Cu3N, Cu2O, and CuO by controlling the calcination temperature and to obtain the derived Cu catalyst (A-Cu3N-300-0.5) enriched with Cu(111)/Cu(200) grain boundaries (GBs) by subsequent constant potential reduction. Its Faraday efficiency (FE) towards C2H4 at a low reaction potential of 1.07 V (vs. reversible hydrogen electrode (RHE)) is 46.03%, which is much higher than the other three derived Cu catalysts containing single Cu(111) facets (24.89% and 24.52%) and Cu(111)/Cu(111) GBs (28.66%). Combining in-situ experimental and theoretical computational studies, we find that abundant Cu(111)/Cu(200) GBs enhance CO2 activation and significantly promote the formation and adsorption of *CO intermediates, thereby lowering the activation energy barrier of C-C coupling and increasing the FE of C2H4.