文献类型：期刊文献

英文题名：Enhanced CO2 Electrochemical Reduction Performance over Cu@AuCu Catalysts at High Noble Metal Utilization Efficiency

作者：Dai, Sheng[1];Huang, Tzu-Hsi[1,2];Liu, Wei-, I[2];Hsu, Chia-Wei[2];Lee, Sheng-Wei[2];Chen, Tsan-Yao[4,5];Wang, Ya-Chen[3];Wang, Jeng-Han[3];Wang, Kuan-Wen[2,6]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Inst Fine Chem,Key Lab Adv Ma, Shanghai 200237, Peoples R China;[2]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan;[3]Natl Taiwan Normal Univ, Dept Chem, Taipei 116, Taiwan;[4]Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan;[5]Natl Cheng Kung Univ, Hierarch Green Energy Mat HiGEM Res Ctr, Tainan 70101, Taiwan;[6]Natl Taiwan Univ Sci & Technol, Dept Mat Sci & Engn, Taipei 10607, Taiwan

年份：2021

卷号：21

期号：21

起止页码：9293

外文期刊名：NANO LETTERS

收录：;EI(收录号：20214811219965);WOS:【SCI-EXPANDED(收录号:WOS:000718298700046)】；

基金：This work was supported by Fundamental Research Funds for the Central Universities (JKVJ1211022), the Shanghai Risingstar Program (20QA1402400), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and the Ministry of Science and Technology, Taiwan (MOST 110-2221-E-008-061-MY3, 110-2113-M-003 -017, and 109-2622-E-008-029). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：electrochemical CO2 reduction reaction; Au-Cu catalyst; core-shell structure; CO selectivity; DFT calculation

摘要：The electrochemical CO2 reduction reaction (CO2RR) represents a viable alternative to help close the anthropogenic carbon cycle and convert intermittent electricity from renewable energy sources to chemical energy in the form of value-added chemicals. The development of economic catalysts possessing high faradaic efficiency (FE) and mass activity (MA) toward CO2RR is critical in accelerating CO2 utilization technology. Herein, an elaborate Au-Cu catalyst where an alloyed AuCu shell caps on a Cu core (Cu@AuCu) is developed and evaluated for CO2-to-CO electrochemical conversion. Specific roles of Cu and Au for CO2RR are revealed in the alloyed core-shell structure, respectively, and a compositional-dependent volcano-plot is disclosed for the Cu@AuCu catalysts toward selective CO production. As a result, the Au-2-Cu-8 alloyed core-shell catalyst (only 17% Au content) achieves an FECO value as high as 94% and an MA(CO) of 439 mA/mg(Au) at -0.8 V (vs RHE), superior to the values for pure Au, reflecting its high noble metal utilization efficiency.