Lee, Woong Hee Lim, Chulwan Ban, Eunseo Bae, Soohyun Ko, Jongwon Lee, Hae-Seok Min, Byoung Koun Lee, Kwan-Young Yu, Jae Su Oh, Hyung-Suk 2024-01-19T13:32:21Z 2024-01-19T13:32:21Z 2021-10-21 2021-11 0926-3373 https://pubs.kist.re.kr/handle/201004/116235 The electrochemical conversion of CO2 into CO using solar energy is the most efficient technique for artificial photosynthesis. However, many challenges remain, including the realisation of large-scale systems with high current density and stability. Herein, we report a carbon-supported tungsten-seed-based 3D silver dendrite (W@AgD) catalyst with abundant nanograin boundaries that exhibit enhanced CO2 reduction (CO2R) performance and stability. In zero-gap CO2 electrolyzer, W@AgD showed outstanding catalytic activity with a maximum CO partial current density of 400 mA cm(-2) and stable operation for 100 h at 150 mA cm(-2). The 3D dendrites improve CO2 mass transfer, while the abundant grain boundaries drive the AgxCyOz layer near the surface after activation, leading to superior CO2R catalytic activity owing to the strong local electric fields. In a stand-alone photovoltaic-electrochemical system, we achieved a solar-to-CO efficiency (eta(STC)) of 12.1 % at 1 A. Thus, the synthesized catalyst and system are suitable for efficient solar energy storage. English Elsevier BV W@Ag dendrites as efficient and durable electrocatalyst for solar-to-CO conversion using scalable photovoltaic-electrochemical system Article 10.1016/j.apcatb.2021.120427 1 Applied Catalysis B: Environmental, v.297 Applied Catalysis B: Environmental 297 Y scie scopus 000700080800002 2-s2.0-85107824642 Chemistry, Physical Engineering, Environmental Engineering, Chemical Chemistry Engineering Article CARBON-DIOXIDE REDUCTION PLASMONIC PHOTOCATALYST FLOW CELL ELECTROREDUCTION NANOCOMPOSITES SURFACE NANOPARTICLES ELECTRODES MONOXIDE Solar to chemical conversion Photovoltaic-electrochemical system Electrochemical CO2 reduction reaction (CO2RR) Carbon monoxide Ag dendrites