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Experiment on Effect of Cell Uniformity and Connection Mode on Performance of SOFC Stack
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Wei LIU  Student Member, CPSS1, Jia LÜ1, Xiaomao SUN2, Liangyu TIAN3, Qiang HU2, 4, Jian WU1, 2
Journal of Power Supply | 2025, 23(5) : 278 - 288
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Journal of Power Supply | 2025, 23(5): 278-288
• Battery and Energy Storage •
Experiment on Effect of Cell Uniformity and Connection Mode on Performance of SOFC Stack
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Wei LIU  Student Member, CPSS1, Jia LÜ1, Xiaomao SUN2, Liangyu TIAN3, Qiang HU2, 4, Jian WU1, 2
Affiliations
  • 1.College of Mathematics and Computer Science, Zhejiang A&F University, Hangzhou 311300, China
  • 2.Zhejiang Zhentai Energy Technology Co., Ltd., Lishui 321400, China
  • 3.Innovation and Entrepreneurship Center, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310051, China
  • 4.Ecology School, Lishui University, Lishui 323000, China
Published: 2025-09-30 doi: 10.13234/j.issn.2095-2805.2025.5.278
Outline
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The cell uniformity and connection mode of solid oxide fuel cell (SOFC) are important factors affecting the overall performance of the stack. The uniformity of flat-chip cells in the SOFC stack is evaluated by methods such as linear sweep voltammetry and electrochemical impedance spectroscopy. Then, the comprehensive effect of cell uniformity and connection mode on the stack's output performance and the underlying electrochemical mechanism are investigated by combining with the method of distribution of relaxation times. Results indicate that the cell uniformity and connection mode jointly affect the stack performance, i.e., the cell uniformity affects the stack lifetime, while the connection mode affects the stack's output power. In a series mode, a low cell uniformity will cause the poor-performance cell to over-discharge, which may accelerate the deterioration of the stack performance. Compared with the series mode, the parallel mode will cause a higher power loss, which mainly comes from ohm resistance, oxygen exchange and charge transfer processes but affects the stack lifetime to a small degree. In general, the peak power of the series stack is high, but the lifetime is greatly affected when the cell uniformity is low. The power loss of the parallel stack is obvious, but the influence on the stack lifetime is weak.

Flat-chip solid oxide fuel cell (SOFC) stack  /  series-parallel connection  /  performance uniformity  /  power loss  /  electrochemical impedance spectroscopy
刘威中国电源学会学生会员, 吕佳, 孙小毛, 田梁玉, 胡强, 吴剑. 一致性和连接方式对SOFC电堆性能影响的实验研究. 电源学报, 2025 , 23 (5) : 278 -288 . DOI: 10.13234/j.issn.2095-2805.2025.5.278
Wei LIU, Jia LÜ, Xiaomao SUN, Liangyu TIAN, Qiang HU, Jian WU. Experiment on Effect of Cell Uniformity and Connection Mode on Performance of SOFC Stack[J]. Journal of Power Supply, 2025 , 23 (5) : 278 -288 . DOI: 10.13234/j.issn.2095-2805.2025.5.278
  • National Key R&D Plan(2021YFB2500400)
  • Central Government Guides the Local Science and Technology Development Project(2021C01100)
  • Zhejiang Provincial Science and Technology Plan(2020R02015)
  • Zhejiang Provincial Leading Innovation and Entrepreneurship Team Construction(2019ZY1015)
  • Lishui Science and Technology Plan(2021ZDYF01)
Year 2025 volume 23 Issue 5
36
4
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.5.278
  • Receive Date:2022-10-28
  • Online Date:2026-10-26
  • Published:2025-09-30
Article Data
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History
  • Received:2022-10-28
  • Revised:2022-12-15
  • Accepted:2023-01-19
Funding
National Key R&D Plan(2021YFB2500400)
Central Government Guides the Local Science and Technology Development Project(2021C01100)
Zhejiang Provincial Science and Technology Plan(2020R02015)
Zhejiang Provincial Leading Innovation and Entrepreneurship Team Construction(2019ZY1015)
Lishui Science and Technology Plan(2021ZDYF01)
Affiliations
    1.College of Mathematics and Computer Science, Zhejiang A&F University, Hangzhou 311300, China
    2.Zhejiang Zhentai Energy Technology Co., Ltd., Lishui 321400, China
    3.Innovation and Entrepreneurship Center, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310051, China
    4.Ecology School, Lishui University, Lishui 323000, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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