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    • Research on Thermal Management Strategies for Solid Oxide Electrolysis Cells Based on Phase Change Material
    DOI：10.13949/j.cnki.nrjgc.2024.04.001
    Key Words:electro-synthetic fuel  solid oxide electrolysis cell  co-electrolysis  thermal management  phase change material
    Author NameAffiliationE-mail
    ZHANG Xuejie School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China zxj121020910359@sjtu.edu.cn 
    FEI Yuxuan School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China minato2020@sjtu.edu.cn 
    LI Ang School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China liang007@sjtu.edu.cn 
    SUN Mingyuan College of Smart Energy， Shanghai Jiao Tong University， Shanghai 200240， China minglang@sjtu.edu.cn 
    ZHU Lei* School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China tonyzhulei@sjtu.edu.cn 
    HUANG Zhen School of Mechanical Engineering， Shanghai Jiao Tong University， Shanghai 200240， China
    College of Smart Energy， Shanghai Jiao Tong University， Shanghai 200240， China     		z-huang@sjtu.edu.cn 
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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 temperatures， current densities， and chemical reaction rates. 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 1 205 K to 1 151 K， a decrease of 4.45%. The minimum temperature， on the other hand， increases from 1 114 K to 1 142 K， a 2.46% increase. The temperature uniformity of the SOEC can also be improved up to 90.13%. The use of PCM-based thermal management strategies is beneficial for ensuring the long-term stable operation of SOEC.
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