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Synergistic enhancement of power density and energy efficiency in phosphoric acid fuel cells via near-field thermoradiative cell integration

Author

Listed:
  • Jiang, Yefan
  • Wang, Mingsong
  • Wang, Mengyao
  • Zhang, Jian
  • Wang, Chenfei
  • Zhang, Xin
  • Peng, Wanli
  • Rahman, Ehsanur
  • Guo, Juncheng

Abstract

Phosphoric acid fuel cells (PAFCs) suffer from significant waste heat generation during operation, diminishing energy conversion efficiency and exacerbating global warming. To address this challenge, an innovative hybrid system integrating a near-field thermoradiative cell (NFTRC) with a PAFC is proposed to effectively enhance fuel utilization and recover waste heat, thereby providing a new technical pathway for the efficient utilization of renewable energy and low-carbon transition. Through a thermodynamically rigorous framework, the hybrid system’s performance is analytically modeled by deriving its output power density and energy conversion efficiency, explicitly accounting for irreversible losses inherent to both subsystems. The results demonstrate that the PAFC–NFTRC hybrid system achieves a 17.2% enhancement in maximum power density and a 6.4% improvement in energy conversion efficiency compared to a standalone PAFC. Parametric analyses reveal that increasing the PAFC operating temperature or exchange current density significantly enhances system performance, while an enlarged NFTRC vacuum gap or higher electrolyte molar fraction negatively impacts the output performance. Comparative evaluations with existing PAFC-based hybrid systems highlight the superior efficacy of NFTRCs in waste heat recovery, outperforming conventional heat-to-electricity conversion techniques. This study establishes a theoretical framework for optimizing PAFC–NFTRC system design and operational parameters, offering valuable insights into the development of high-efficiency, low-emission energy conversion technologies.

Suggested Citation

  • Jiang, Yefan & Wang, Mingsong & Wang, Mengyao & Zhang, Jian & Wang, Chenfei & Zhang, Xin & Peng, Wanli & Rahman, Ehsanur & Guo, Juncheng, 2026. "Synergistic enhancement of power density and energy efficiency in phosphoric acid fuel cells via near-field thermoradiative cell integration," Renewable Energy, Elsevier, vol. 263(C).
    • Handle: RePEc:eee:renene:v:263:y:2026:i:c:s0960148126003149
    DOI: 10.1016/j.renene.2026.125489
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    References listed on IDEAS

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    1. Li, Hao & Zhou, Xingfei & Hu, Ziyang & Zhang, Houcheng, 2025. "Waste heat recycling from phosphoric acid fuel cells for desalination with hydrophilic modified tubular stills: Performance prediction and regulation," Energy, Elsevier, vol. 317(C).
    2. Ozkan, Oktay & Olanipekun, Ifedolapo Olabisi & Olasehinde-Williams, Godwin, 2024. "Dynamic correlation among renewable energy, technology, and carbon markets: Evidence from a novel nonparametric time-frequency approach," Renewable Energy, Elsevier, vol. 237(PB).
    3. Zhang, Xin & Rahman, Ehsanur, 2022. "Thermodynamic analysis and optimization of a hybrid power system using thermoradiative device to efficiently recover waste heat from alkaline fuel cell," Renewable Energy, Elsevier, vol. 200(C), pages 1240-1250.
    4. Katie H. Lim & Albert S. Lee & Vladimir Atanasov & Jochen Kerres & Eun Joo Park & Santosh Adhikari & Sandip Maurya & Luis Delfin Manriquez & Jiyoon Jung & Cy Fujimoto & Ivana Matanovic & Jasna Jankovi, 2022. "Protonated phosphonic acid electrodes for high power heavy-duty vehicle fuel cells," Nature Energy, Nature, vol. 7(3), pages 248-259, March.
    5. Chang, Cheng-Ping & Wu, Yen-Chih & Chen, Wei-Yen & Pan, Chin & Su, Yu-Chuan & Huang, Yuh-Jeen & Tseng, Fan-Gang, 2020. "A hybrid phosphorus-acid fuel cell system incorporated with oxidative steam reforming of methanol (OSRM) reformer," Renewable Energy, Elsevier, vol. 153(C), pages 530-538.
    6. Lu, Chia-Lien & Chang, Cheng-Ping & Guo, Yi-Hsuan & Yeh, Tsung-Kuang & Su, Yu-Chuan & Wang, Pen-Cheng & Hsueh, Kan-Lin & Tseng, Fan-Gang, 2019. "High-performance and low-leakage phosphoric acid fuel cell with synergic composite membrane stacking of micro glass microfiber and nano PTFE," Renewable Energy, Elsevier, vol. 134(C), pages 982-988.
    7. Hussain, Syed Asad & Razi, Faran & Hewage, Kasun & Sadiq, Rehan, 2023. "The perspective of energy poverty and 1st energy crisis of green transition," Energy, Elsevier, vol. 275(C).
    8. Guo, Xinru & Zhang, Houcheng & Hu, Ziyang & Hou, Shujin & Ni, Meng & Liao, Tianjun, 2021. "Energetic, exergetic and ecological evaluations of a hybrid system based on a phosphoric acid fuel cell and an organic Rankine cycle," Energy, Elsevier, vol. 217(C).
    9. Kristian S. Nielsen & Kimberly A. Nicholas & Felix Creutzig & Thomas Dietz & Paul C. Stern, 2021. "The role of high-socioeconomic-status people in locking in or rapidly reducing energy-driven greenhouse gas emissions," Nature Energy, Nature, vol. 6(11), pages 1011-1016, November.
    10. Sun, Wenchao & Huang, Yuewu & Zhao, Yonggang, 2023. "Performance assessment of a coupled device of thermoradiation cell and photovoltaic cell for energy cascade utilization," Energy, Elsevier, vol. 281(C).
    11. Zhang, Xin & Li, Jingwen & Xiong, Yi & Ang, Yee Sin, 2022. "Efficient harvesting of low-grade waste heat from proton exchange membrane fuel cells via thermoradiative power devices," Energy, Elsevier, vol. 258(C).
    12. Ghouse, M. & Abaoud, H. & Al-Boeiz, A. & AbdulHadi, M., 1998. "Development of a 1 kW Phosphoric Acid Fuel Cell stack," Applied Energy, Elsevier, vol. 60(3), pages 153-167, July.
    13. Wilailak, Supaporn & Yang, Jae-Hyeon & Heo, Chul-Gu & Kim, Kyung-Su & Bang, Se-Kyung & Seo, In-Ho & Zahid, Umer & Lee, Chul-Jin, 2021. "Thermo-economic analysis of Phosphoric Acid Fuel-Cell (PAFC) integrated with Organic Ranking Cycle (ORC)," Energy, Elsevier, vol. 220(C).
    14. Verma, Shomik & Buznitsky, Kyle & Henry, Asegun, 2025. "Thermophotovoltaic performance metrics and techno-economics: Efficiency vs. power density," Applied Energy, Elsevier, vol. 384(C).
    15. Hongying Tang & Kang Geng & Lei Wu & Junjie Liu & Zhiquan Chen & Wei You & Feng Yan & Michael D. Guiver & Nanwen Li, 2022. "Fuel cells with an operational range of –20 °C to 200 °C enabled by phosphoric acid-doped intrinsically ultramicroporous membranes," Nature Energy, Nature, vol. 7(2), pages 153-162, February.
    16. Zhao Chen & Zaidi Mohd Ripin & Jie Wang, 2024. "Thermodynamic and Economic Analysis of a Phosphoric Acid Fuel Cell Combined Heating Cooling and Power System," Energies, MDPI, vol. 17(16), pages 1-16, August.
    17. Wang, Mingli & Ruan, Jiafen & Zhang, Jian & Jiang, Yefan & Gao, Fei & Zhang, Xin & Rahman, Ehsanur & Guo, Juncheng, 2024. "Modeling, thermodynamic performance analysis, and parameter optimization of a hybrid power generation system coupling thermogalvanic cells with alkaline fuel cells," Energy, Elsevier, vol. 292(C).
    18. Chen, Xiaohang & Wang, Yuan & Zhao, Yingru & Zhou, Yinghui, 2016. "A study of double functions and load matching of a phosphoric acid fuel cell/heat-driven refrigerator hybrid system," Energy, Elsevier, vol. 101(C), pages 359-365.
    19. Belaïd, Fateh & Al-Sarihi, Aisha & Al-Mestneer, Raed, 2023. "Balancing climate mitigation and energy security goals amid converging global energy crises: The role of green investments," Renewable Energy, Elsevier, vol. 205(C), pages 534-542.
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