Electrolysis of carbon dioxide for carbon monoxide production in a tubular solid oxide electrolysis cell

 Electrolysis of carbon dioxide for carbon monoxide production in a tubular solid oxide electrolysis cell, Advances In Engineering

Journal Reference

Annals of Nuclear Energy, Volume 81, 2015, Pages 257–262.

Arnoldus Lambertus Dipu1*, Yutaka Ujisawa2 , Junichi Ryu3 , Yukitaka Kato3

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  1. Department of Nuclear Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

*Present address: HTGR Hydrogen and Heat Application Research Center, Japan Atomic Energy Agency, 4002 Narita-cho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1393, Japan

  1. Nippon Steel & Sumitomo Metal Corporation, 16-1, Sunayama, Kamisu, Ibaraki 314-0255, Japan
  1. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Abstract

An active carbon recycling energy system (ACRES) based on carbon recycling has been proposed as a new energy transformation system. This energy transformation system reduces the carbon dioxide (CO2) emissions in the atmosphere during the iron-making process. An experimental study for electrochemical CO production by CO2 electrolysis based on the ACRES concept was carried out using a tubular solid oxide electrolysis cell. Experimental results show that the CO and oxygen (O2) production rates at 800, 850, and 900 °C were almost proportional to the current passing through the cell. Both ionic conductivity and the chemical kinetics of CO2 decomposition increased with increasing temperature. The highest current density and CO production rate at 900 °C were 2.97 mA/cm2 and 0.78 μmol/(min cm2), respectively. On the basis of the electrolytic characteristics of the cell, the scale of the combined ACRES CO2 electrolysis/iron-making system was estimated.

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