Development of efficient molecular cathodes for electrocatalytic low concentration CO2 reduction in water

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K14762
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36020:Energy-related chemistry
• Research Institution: Niigata University
• Principal Investigator: Tsubonouchi Yuta 新潟大学, 工学部, 准教授 (90823972)
• Project Period (FY): 2022-04-01 – 2024-03-31
• Keywords: 低濃度二酸化炭素還元 / 分子性カソード / 金属錯体触媒 / 卑金属錯体 / 人工光合成

Outline of Final Research Achievements

This study focused on the development of earth abundant metal complexes capable of electrochemically catalyzing CO2 reduction at low CO2 concentration conditions. We found that a mononuclear iron complex with a planar tetradentate ligand efficiently converts CO2 to CO at low carbon dioxide concentrations of 1% in DMF. Furthermore, various types of iron and nickel complexes were synthesized and their electocatalytic performance for CO2 reduction was clarified.

Free Research Field

人工光合成

Academic Significance and Societal Importance of the Research Achievements

本研究では、平面型鉄単核錯体触媒が低濃度の二酸化炭素を効果的に一酸化炭素へと変換することを見出した。これは、カーボンニュートラル社会の実現に向けた、CO2固定化技術分野の進展に貢献する成果である。