Cooperation of Different Active Sites to Promote CO2 Electroreduction to Multi-carbon Products at Ampere-Level

被引:38
作者
Zhou, Dawei [1 ]
Chen, Chunjun [1 ,2 ,3 ]
Zhang, Yichi [1 ]
Wang, Min [1 ]
Han, Shitao [1 ]
Dong, Xue [1 ]
Yao, Ting [1 ]
Jia, Shuaiqiang [1 ]
He, Mingyuan [1 ,2 ,3 ]
Wu, Haihong [1 ,2 ,3 ]
Han, Buxing [1 ,2 ,3 ,4 ]
机构
[1] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, State Key Lab Petr Mol & Proc Engn, Shanghai 200062, Peoples R China
[2] Sinopec Res Inst Petr Proc Co LTD, State Key Lab Petr Mol & Proc Engn, SKLPMPE, Beijing 100083, Peoples R China
[3] East China Normal Univ, Shanghai 200062, Peoples R China
[4] Chinese Acad Sci, CAS Key Lab Colloid & Interface & Thermodynam, CAS Res Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci,Inst Chem,Ctr Carbon Neu, 2 Zhongguancun North First St, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
carbon dioxide; C2+ products; multi- sites catalyst; electrolysis; green chemistry; CARBON-DIOXIDE; COPPER; ELECTROLYSIS; ELECTROCATALYSIS; METHANATION; REDUCTION; CATALYSTS;
D O I
10.1002/anie.202400439
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Electroreduction of CO2 to C2+ products provides a promising strategy for reaching the goal of carbon neutrality. However, achieving high selectivity of C2+ products at high current density remains a challenge. In this work, we designed and prepared a multi-sites catalyst, in which Pd was atomically dispersed in Cu (Pd-Cu). It was found that the Pd-Cu catalyst had excellent performance for producing C2+ products from CO(2 )electroreduction. The Faradaic efficiency (FE) of C2+ products could be maintained at approximately 80.8 %, even at a high current density of 0.8 A cm-2 for at least 20 hours. In addition, the FE of C2+ products was above 70 % at 1.4 A cm(-2). Experiments and density functional theory (DFT) calculations revealed that the catalyst had three distinct catalytic sites. These three active sites allowed for efficient conversion of CO2, water dissociation, and CO conversion, ultimately leading to high yields of C(2+ )products.
引用
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页数:8
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