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<p>Consumption of oxygen generated from the anode of a solid oxide electrolytic cell (SOEC) through the combustion process can reduce the partial pressure of oxygen at the anode of SOEC hydrogen production and significantly reduce the energy consumption of SOEC hydrogen production. In this study, the electrochemical performance of fuel anode-assisted SOEC hydrogen production was analyzed and discussed using methanol, methane, and ammonia as oxidizing media, and the process flow was established to compare the effects of different fuels on the energy consumption and energy efficiency of the system. The results showed that the fuel consumption could be significantly reduced by heat recovery, and the natural gas consumption per unit of hydrogen production was the lowest under the same conditions, and the electrical energy consumption of methanol was the lowest. Energy efficiency was lowest when methane was used as a fuel, and methanol and ammonia fuels exhibited close energy efficiencies. Increasing the conversion of SOEC electrolyzed water can significantly improve energy efficiency and reduce fuel and electrical energy consumption. Increasing the water–hydrogen ratio of the cathode feed is favorable for improving energy efficiency. When energy utilization is considered together, methanol has the best advantage in anodic oxidation-assisted SOEC hydrogen production.</p>

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Energy analysis of hydrogen production via fuel-assisted high-temperature solid oxide electrolysis cell via system modelling

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月12日

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  • ZiYong Li,
  • Qingdan Huang,
  • Liu Yang,
  • Huihong Huang,
  • Kaiqing Wei,
  • Dongyu Li,
  • Chongzhi Zhao,
  • Jing Liu,
  • Zhuya Li

摘要

Consumption of oxygen generated from the anode of a solid oxide electrolytic cell (SOEC) through the combustion process can reduce the partial pressure of oxygen at the anode of SOEC hydrogen production and significantly reduce the energy consumption of SOEC hydrogen production. In this study, the electrochemical performance of fuel anode-assisted SOEC hydrogen production was analyzed and discussed using methanol, methane, and ammonia as oxidizing media, and the process flow was established to compare the effects of different fuels on the energy consumption and energy efficiency of the system. The results showed that the fuel consumption could be significantly reduced by heat recovery, and the natural gas consumption per unit of hydrogen production was the lowest under the same conditions, and the electrical energy consumption of methanol was the lowest. Energy efficiency was lowest when methane was used as a fuel, and methanol and ammonia fuels exhibited close energy efficiencies. Increasing the conversion of SOEC electrolyzed water can significantly improve energy efficiency and reduce fuel and electrical energy consumption. Increasing the water–hydrogen ratio of the cathode feed is favorable for improving energy efficiency. When energy utilization is considered together, methanol has the best advantage in anodic oxidation-assisted SOEC hydrogen production.