IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v242y2025ics0960148125000862.html
   My bibliography  Save this article

Research progress in SO2 depolarized electrolysis at INET

Author

Listed:
  • Xie, Luyao
  • Zhang, Ping
  • Tian, Ru
  • Xiao, Peng
  • Wang, Laijun
  • Chen, Songzhe

Abstract

INET (Institute of Nuclear and New Energy Technology, Tsinghua University) is a deep participant in nuclear hydrogen, paying great attention to SO2-depolarized electrolysis (SDE), which is the hydrogen producing step of hybrid sulfur cycle. In this paper, INET's recent advances in SDE research and the R&D plan are summarized. At current, INET focuses on the liquid-fed SDE system. Fundamental studies on SDE are carried out, including electrolysis mechanism, MEA/electrode fabrication, impedance composition analysis, cell design/optimization, and so on. With the application of porous flow field and three-dimensional anode, high SDE performance is obtained. At atmospheric pressure and cell voltage of 1.0 V, the current density of 800 mA/cm2 and 560 mA/cm2 were obtained when the anolyte H2SO4 concentration were set at 30 wt% and 50 wt%, respectively. Scale up of SDE stacks to both larger cell sizes and larger cell numbers are conducted. INET assembled multi-cell SDE stacks with active cell area of 246 cm2, achieving hydrogen producing rate of ∼500 NL/h. After optimization, a 4-cell stack with 1624 cm2 cell area has been built. INET's R&D plan of SDE research is presented. Future work incorporating optimized operating conditions and advanced cell structures is expected to further improve the SDE development.

Suggested Citation

  • Xie, Luyao & Zhang, Ping & Tian, Ru & Xiao, Peng & Wang, Laijun & Chen, Songzhe, 2025. "Research progress in SO2 depolarized electrolysis at INET," Renewable Energy, Elsevier, vol. 242(C).
    • Handle: RePEc:eee:renene:v:242:y:2025:i:c:s0960148125000862
    DOI: 10.1016/j.renene.2025.122424
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148125000862
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.122424?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    References listed on IDEAS

    as
    1. Qunxiang Gao & Ping Zhang & Wei Peng & Songzhe Chen & Gang Zhao, 2021. "Structural Design Simulation of Bayonet Heat Exchanger for Sulfuric Acid Decomposition," Energies, MDPI, vol. 14(2), pages 1-18, January.
    2. Rosen, Marc A., 2010. "Advances in hydrogen production by thermochemical water decomposition: A review," Energy, Elsevier, vol. 35(2), pages 1068-1076.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Sadeghi, Shayan & Ghandehariun, Samane, 2022. "A standalone solar thermochemical water splitting hydrogen plant with high-temperature molten salt: Thermodynamic and economic analyses and multi-objective optimization," Energy, Elsevier, vol. 240(C).
    2. Lin, Kuang C. & Lin, Yuan-Chung & Hsiao, Yi-Hsing, 2014. "Microwave plasma studies of Spirulina algae pyrolysis with relevance to hydrogen production," Energy, Elsevier, vol. 64(C), pages 567-574.
    3. Santos, D.M.F. & Šljukić, B. & Sequeira, C.A.C. & Macciò, D. & Saccone, A. & Figueiredo, J.L., 2013. "Electrocatalytic approach for the efficiency increase of electrolytic hydrogen production: Proof-of-concept using platinum--dysprosium alloys," Energy, Elsevier, vol. 50(C), pages 486-492.
    4. Łukasz Adrian & Szymon Szufa & Piotr Piersa & Piotr Kuryło & Filip Mikołajczyk & Krystian Kurowski & Sławomir Pochwała & Andrzej Obraniak & Jacek Stelmach & Grzegorz Wielgosiński & Justyna Czerwińska , 2021. "Analysis and Evaluation of Heat Pipe Efficiency to Reduce Low Emission with the Use of Working Agents R134A, R404A and R407C, R410A," Energies, MDPI, vol. 14(7), pages 1-29, March.
    5. Hussein, A.M.A. & Burra, K.G. & Bassioni, G. & Hammouda, R.M. & Gupta, A.K., 2019. "Production of CO from CO2 over mixed-metal oxides derived from layered-double-hydroxides," Applied Energy, Elsevier, vol. 235(C), pages 1183-1191.
    6. Ghandehariun, S. & Wang, Z. & Naterer, G.F. & Rosen, M.A., 2015. "Experimental investigation of molten salt droplet quenching and solidification processes of heat recovery in thermochemical hydrogen production," Applied Energy, Elsevier, vol. 157(C), pages 267-275.
    7. Abbasi, Tasneem & Abbasi, S.A., 2011. "'Renewable' hydrogen: Prospects and challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(6), pages 3034-3040, August.
    8. Łukasz Adrian & Szymon Szufa & Piotr Piersa & Filip Mikołajczyk, 2021. "Numerical Model of Heat Pipes as an Optimization Method of Heat Exchangers," Energies, MDPI, vol. 14(22), pages 1-38, November.
    9. Hosseini, Seyed Ehsan & Wahid, Mazlan Abdul, 2016. "Hydrogen production from renewable and sustainable energy resources: Promising green energy carrier for clean development," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 850-866.
    10. Obara, Shin’ya & Watanabe, Seizi & Rengarajan, Balaji, 2011. "Operation method study based on the energy balance of an independent microgrid using solar-powered water electrolyzer and an electric heat pump," Energy, Elsevier, vol. 36(8), pages 5200-5213.
    11. El-Askary, W.A. & Sakr, I.M. & Ibrahim, K.A. & Balabel, A., 2015. "Hydrodynamics characteristics of hydrogen evolution process through electrolysis: Numerical and experimental studies," Energy, Elsevier, vol. 90(P1), pages 722-737.
    12. Busch, P. & Kendall, A. & Lipman, T., 2023. "A systematic review of life cycle greenhouse gas intensity values for hydrogen production pathways," Renewable and Sustainable Energy Reviews, Elsevier, vol. 184(C).
    13. Abánades, A. & Rubbia, C. & Salmieri, D., 2012. "Technological challenges for industrial development of hydrogen production based on methane cracking," Energy, Elsevier, vol. 46(1), pages 359-363.
    14. Song, Lee-hwa & Kang, Hyun Woo & Park, Seung Bin, 2012. "Thermally stable iron based redox catalysts for the thermo-chemical hydrogen generation from water," Energy, Elsevier, vol. 42(1), pages 313-320.
    15. Kong, Hui & Kong, Xianghui & Wang, Jian & Zhang, Jun, 2019. "Thermodynamic analysis of a solar thermochemical cycle-based direct coal liquefaction system for oil production," Energy, Elsevier, vol. 179(C), pages 1279-1287.
    16. Sun, Xue & Li, Xiaofei & Zeng, Jingxin & Song, Qiang & Yang, Zhen & Duan, Yuanyuan, 2023. "Energy and exergy analysis of a novel solar-hydrogen production system with S–I thermochemical cycle," Energy, Elsevier, vol. 283(C).
    17. González Rodríguez, Daniel & Brayner de Oliveira Lira, Carlos Alberto & García Parra, Lázaro Roger & García Hernández, Carlos Rafael & de la Torre Valdés, Raciel, 2018. "Computational model of a sulfur-iodine thermochemical water splitting system coupled to a VHTR for nuclear hydrogen production," Energy, Elsevier, vol. 147(C), pages 1165-1176.
    18. Gutiérrez Ortiz, F.J. & Ollero, P. & Serrera, A. & Galera, S., 2012. "Process integration and exergy analysis of the autothermal reforming of glycerol using supercritical water," Energy, Elsevier, vol. 42(1), pages 192-203.
    19. Gokon, Nobuyuki & Suda, Toshinori & Kodama, Tatsuya, 2015. "Oxygen and hydrogen productivities and repeatable reactivity of 30-mol%-Fe-, Co-, Ni-, Mn-doped CeO2−δ for thermochemical two-step water-splitting cycle," Energy, Elsevier, vol. 90(P2), pages 1280-1289.
    20. Li, Lin & Song, Yongchen & Jiang, Bo & Wang, Kaiqiang & Zhang, Qian, 2017. "A novel oxygen carrier for chemical looping reforming: LaNiO3 perovskite supported on montmorillonite," Energy, Elsevier, vol. 131(C), pages 58-66.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    JEL classification:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:242:y:2025:i:c:s0960148125000862. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.