Output power leveling of renewable energy systems by utilization of these energies for carbon dioxide reduction and carbon material regeneration

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656550
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Recycling engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: KATO Yukitaka 東京工業大学, 原子炉工学研究所, 准教授 (20233827)
• Co-Investigator(Kenkyū-buntansha): RYU Junichi 東京工業大学, 原子炉工学研究所, 助教 (70376937)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 二酸化炭素 / 電気分解 / 再生可能エネルギー / 負荷平準化 / 炭素資源再生

Outline of Final Research Achievements

Efficient carbon dioxide (CO2) reduction into carbon material is required to establish a smart enegy system using unstable electricity production from solar, wind and so fourth renewable energy systems. Direct electrolysis of CO2 was discussed experimentally. A disk-type solid oxide electrolysis cell (SOEC) was prepared and examined experimentally for application to the CO2 reduction process. The electrolysis of carbon dioxide was conducted at 800-900 degree C. A current density of 107.1 mA cm-2 was measured between the cathode and anode at 900 deg. C and at 2.52 V. The production rates of carbon monoxide ar a carbon material and oxygen were in agreement with the theoretical values determined using Faraday’s law. It was demonstrated that the SOEC methodology is useful for utilization of large amount and unstable renewable energies.

Free Research Field

エネルギー学