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    • Research on thermal management strategies for solid oxide electrolysis cell based on phase change material
    DOI：10.13949/j.cnki.nrjgc.2024.04.007
    Key Words:electro-synthetic fuel  solid oxide electrolysis cell  co-electrolysis  thermal management  phase change material
    Author NameAffiliationPostcode
    Xuejie Zhang School of Mechanical Engineering,Shanghai Jiao Tong University 200240
    Yuxuan Fei School of Mechanical Engineering,Shanghai Jiao Tong University 
    Ang Li School of Mechanical Engineering,Shanghai Jiao Tong University 
    Mingyuan Sun College of Smart Energy,Shanghai Jiao Tong University 
    Lei Zhu School of Mechanical Engineering,Shanghai Jiao Tong University 200240
    Zhen Huang School of Mechanical Engineering,Shanghai Jiao Tong University 
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    Abstract:In order to achieve efficient heat management of high temperature solid oxide electrolysis cell (SOEC) under fluctuating voltage input, a heat management strategy based on phase change material (PCM) was proposed. A three-dimensional multiphysics model for co-electrolysis of H2O/CO2 in SOEC was established to analyze the impact of PCM-based thermal management strategies on SOEC temperature, current density, and chemical reaction rate. The results indicate that using PCM for thermal management can effectively suppress temperature fluctuations inside the SOEC under fluctuating voltage input, preventing drastic temperature changes while significantly improving temperature uniformity. During a dynamic input process from 1.34 V to 1.50 V and then down to 1.10 V, the use of PCM reduces the maximum temperature of the cell from 1205 K to 1151 K, a decrease of 4.45%. The minimum temperature, on the other hand, increases from 1114 K to 1142 K, a 2.46% increase. The temperature uniformity of the SOEC can also be improved by up to 90.13%. The use of PCM-based thermal management strategies is beneficial for ensuring the long-term stable operation of SOEC, laying a solid foundation for the large-scale ap-plication of electro-synthetic fuel.
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