TY  - JOUR
AU  - Wang, Sha
AU  - Zhang, Jianling
AU  - Yao, Lei
AU  - Yang, Yisen
AU  - Zheng, Lirong
AU  - Guan, Bo
AU  - Zhao, Yingzhe
AU  - Wang, Yanyue
AU  - Han, Buxing
AU  - Xing, Xueqing
PY  - 2023
TI  - Efficient electrocatalytic CO2 reduction to C2+ chemicals on internal porous copper
JO  - Nano Research
SN  - 1998-0124
SP  - 10779
EP  - 10786
VL  - 16
IS  - 8
AB  - To improve the electrocatalytic conversion of carbon dioxide (CO2) into C2+ products (such as ethylene (C2H4) and ethanol (CH3CH2OH), etc.) is of great importance, but remains challenging. Herein, we proposed a strategy that directs the C–C coupling pathway through enriching and confining the carbon monoxide (CO) intermediate to internal pores of Cu nanocubes, for electrocatalytic reduction of CO2 into C2+ chemicals. In H-type cell, the Faraday efficiency (FE) for ethylene and ethanol reaches 70.3% at −1.28 V versus the reversible hydrogen electrode (vs. RHE), with a current density of 47.9 mA·cm−2. In flow cell, the total current density is up to 340.3 mA·cm−2 at −2.38 V (vs. RHE) and the FE for C2+ products is 67.4%. Experimental and theoretical studies reveal that both the CO intermediate adsorption and C–C coupling reaction on such an internal porous catalyst are facilitated, thus improving CO2-to-C2+ conversion efficiency.
UR  - https://doi.org/10.1007/s12274-023-5791-y
DO  - 10.1007/s12274-023-5791-y