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Serial electrochemical hydrogen compressor stack for high-pressure compression

Author

Listed:
  • Chu, Chanho
  • Kim, Minsoo
  • Kim, Youngki
  • Park, Sihyung
  • Beom, Taeyoung
  • Kim, Sangwon
  • Kim, Dong Kyu

Abstract

In this study, a serial electrochemical hydrogen compressor (EHC) stack was designed to compress hydrogen gas to hundreds of bars. The operating parameters were examined to analyze optimal performance. First, a serial stack was designed to enable the EHC to operate at pressures exceeding hundreds of bars. The circular design of the stack was chosen specifically to prevent hydrogen leakage. A 127-μm-thick membrane was selected owing to its relatively good pressure resistance and performance. Through a serial EHC stack of 3 cells, hydrogen was pressurized over 120 bar. A parametric study showed that the pressure-ratio across the membrane barely affected the performance. Additionally, the higher the temperature and relative humidity, the better the performance. By increasing the temperature to 70 °C, the power consumption was reduced by 40 %. At 100 % relative humidity, the EHC exhibited the lowest power consumption. Finally, the performance of the serial stack was analyzed under optimal operating conditions, wherein it demonstrated an efficiency over 64 % for below 0.03 kg/day mass-flow rate of compressed hydrogen. However, efficiency decreased to 12 % at a mass-flow rate over 0.17 kg/day.

Suggested Citation

  • Chu, Chanho & Kim, Minsoo & Kim, Youngki & Park, Sihyung & Beom, Taeyoung & Kim, Sangwon & Kim, Dong Kyu, 2025. "Serial electrochemical hydrogen compressor stack for high-pressure compression," Applied Energy, Elsevier, vol. 383(C).
    • Handle: RePEc:eee:appene:v:383:y:2025:i:c:s0306261925001278
    DOI: 10.1016/j.apenergy.2025.125397
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    References listed on IDEAS

    as
    1. Haji, Shaker, 2011. "Analytical modeling of PEM fuel cell i–V curve," Renewable Energy, Elsevier, vol. 36(2), pages 451-458.
    2. Li, Sida & Wei, Xuezhe & Jiang, Shangfeng & Yuan, Hao & Ming, Pingwen & Wang, Xueyuan & Dai, Haifeng, 2022. "Hydrogen crossover diagnosis for fuel cell stack: An electrochemical impedance spectroscopy based method," Applied Energy, Elsevier, vol. 325(C).
    3. Pineda-Delgado, J.L. & Chávez-Ramirez, A.U. & Gutierrez B, Cynthia K. & Rivas, S. & Marisela, Cruz-Ramírez & de Jesús Hernández-Cortes, Ramiro & Menchaca-Rivera, J.A. & Pérez-Robles, J.F., 2022. "Effect of relative humidity and temperature on the performance of an electrochemical hydrogen compressor," Applied Energy, Elsevier, vol. 311(C).
    4. Kim, Min Soo & Kim, Jungchul & Kim, So Yeon & Chu, Chan Ho & Rho, Kyu Heon & Kim, Minsung & Kim, Dong Kyu, 2022. "Parametric study on the performance of electrochemical hydrogen compressors," Renewable Energy, Elsevier, vol. 199(C), pages 1176-1188.
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