구리 증착 조건에 따른 가스확산전극의 이산화탄소 환원 성능 및 에탄올 선택성 향상

• Published in: Current Photovoltaic Research Vol. 12; no. 4; pp. 117 - 121
• Main Authors: 성채원(Chaewon Seong), 허지원(Jiwon Heo), 하준석(Jun-Seok Ha)
• Format: Journal Article
• Language: Korean
• Published: 한국태양광발전학회 2024
• Subjects: 기타공학; Gas diffusion electrode; Electrochemical CO₂ reduction; Electrocatalyst; Copper; Electrochemical $CO_2$ reduction
• ISSN: 2288-3274; 2508-125X

The electrochemical carbon dioxide reduction reaction (eCO2RR) has garnered significant attention as a promising approach for converting carbon dioxide, a major greenhouse gas, into valuable carbon-based products. Among available catalysts, copper (Cu) stands out as the potential candidate capable of producing C2+ compounds during eCO2RR. However, its practical application is hindered by limitations such as low stability, efficiency, and selectivity, requiring further investigation. This study addresses these challenges by employing a gas diffusion electrode (GDE) to enhance the efficiency and selectivity of Cu-based catalysts. The GDE@Cu electrode was fabricated via electrodeposition, and its eCO2RR performance was systematically evaluated under varying Cu deposition times to optimize the fabrication process. The findings demonstrated that the GDE@Cu electrode achieved a Faradaic efficiency (FE) exceeding 50% for ethanol production, underscoring the efficacy of electrodeposited Cu on GDE in facilitating C2 hydrocarbon generation. This optimized strategy highlights the potential of Cu-based catalysts for improved performance in eCO2RR applications.