Synthesis of stacked metal layer elecetrode for electrochemical reduction reaction of carbon dioxide

2021 Fiscal Year Final Research Report

• Project/Area Number: 18K04737
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26030:Composite materials and interfaces-related
• Research Institution: Fukuoka University
• Principal Investigator: Yoshihara Naoki 福岡大学, 工学部, 助教 (90708869)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Keywords: 電気化学還元反応 / 二酸化炭素 / 複合材料 / 結晶構造

Outline of Final Research Achievements

The electrochemical reduction reaction of carbon dioxide (CO2ERR) has attracted significant interest with respect to converting into several products, such as carbonbased fuels or chemicals. It was shown by theoretical calculations that the product selectivity in CO2ERR is strongly depended on the CO2 adsorption energy on the interface of metal electrode. In this research, we demonstrated the effective CO2ERR by utilizing the stacked metal layer electrodes. Furthermore, we confirmed that the CO2ERR activity on the Cu/Ni stacked bilayer electrodes significantly affects the crystal structure beneath the Cu electrodes.

Free Research Field

材料化学

Academic Significance and Societal Importance of the Research Achievements

本研究にて作製した金属膜積層電極は、異種金属種の選定や下地金属の結晶構造によって多くの組合せが存在するため、これまで単一の金属電極では実現できなかったCO2吸着力の発現が可能となる。本研究は、副反応を抑制し、高効率なCO2転換を実証したが、さらに生成物選択性の拡張の可能性を有することから、その工業化への展開が期待される。