EFFECT OF INTERNAL REFORMING REACTION OF METHANE MIXED FUEL GAS ON PERFORMANCE OF PLANAR SOLID OXIDE FUEL CELLS

Song Ming; Tong Jiajia; Jiang Wenchun; Niu Ruiyan; Hu Jiawang; Chen Zihao

doi:10.19912/j.0254-0096.tynxb.2023-1485

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (1) : 373-382. DOI: 10.19912/j.0254-0096.tynxb.2023-1485

EFFECT OF INTERNAL REFORMING REACTION OF METHANE MIXED FUEL GAS ON PERFORMANCE OF PLANAR SOLID OXIDE FUEL CELLS

Song Ming¹, Tong Jiajia¹, Jiang Wenchun², Niu Ruiyan¹, Hu Jiawang¹, Chen Zihao¹

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Abstract

In order to investigate the effects of methane concentration in pre-reformed methane-containing fuel gas and internal reforming on the electrochemical and thermomechanical performance of planar solid oxide fuel cells （SOFCs）, a methane internal reforming planar SOFC model was established, and the elastic modulus and Poisson's ratio of the porous material were corrected. The comprehensive performance of the cells was compared under three different methane concentration conditions. The results indicate that, in terms of electrochemical performance, with the increase of methane concentration in the mixed fuel gas, the cell current density and power density gradually increase. The molar concentration of methane in the flow channel decreases along the direction of fuel flow, and the hydrogen concentration shows an increasing trend followed by a decrease along the flow direction, with the maximum hydrogen concentration gradually moving away from the fuel inlet. In terms of thermomechanical performance, as the methane concentration in the mixed fuel gas increases, the maximum first principal stress of the SOFC located on the metal interconnector and the maximum temperature at the fuel outlet decrease gradually. Increasing the methane concentration in the mixed fuel gas appropriately is advantageous for enhancing the overall performance of planar SOFCs.

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solid oxide fuel cells / reforming reactions / multiphysics / electrochemical performance / thermomechanical performance

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Song Ming, Tong Jiajia, Jiang Wenchun, Niu Ruiyan, Hu Jiawang, Chen Zihao. EFFECT OF INTERNAL REFORMING REACTION OF METHANE MIXED FUEL GAS ON PERFORMANCE OF PLANAR SOLID OXIDE FUEL CELLS[J]. Acta Energiae Solaris Sinica. 2025, 46(1): 373-382 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1485

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