甲烷混合燃料气内重整反应对平板式固体氧化物燃料电池性能影响

宋明; 仝佳佳; 蒋文春; 钮瑞艳; 胡佳旺; 陈子豪

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

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (1) : 373-382. DOI: 10.19912/j.0254-0096.tynxb.2023-1485

甲烷混合燃料气内重整反应对平板式固体氧化物燃料电池性能影响

宋明¹, 仝佳佳¹, 蒋文春², 钮瑞艳¹, 胡佳旺¹, 陈子豪¹

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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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摘要

为研究经过预重整的含甲烷混合燃料气中甲烷浓度及内部重整对平板式固体氧化物燃料电池电化学性能和热机械性能的影响,建立甲烷内重整平板式固体氧化物燃料电池模型,并对多孔材料的弹性模量及泊松比进行修正,对比3种不同甲烷浓度条件下电池的综合性能。结果表明：在电化学性能方面,随着混合燃料气中甲烷浓度的增大,电池电流密度和功率密度逐渐增大,流道中甲烷的摩尔浓度沿燃料流动方向逐渐减小,氢气浓度沿流动方向呈先增大后减小的趋势,氢气的最大浓度逐渐远离燃料入口;热机械性能方面,随着混合燃料气中甲烷浓度的增大,位于金属连接体上的电池最大第一主应力和位于燃料出口的电池最大温度逐渐降低。适当提高混合燃料气中甲烷的浓度有利于平板式固体氧化物燃料电池的综合性能优化。

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.

导出引用

宋明, 仝佳佳, 蒋文春, 钮瑞艳, 胡佳旺, 陈子豪. 甲烷混合燃料气内重整反应对平板式固体氧化物燃料电池性能影响[J]. 太阳能学报. 2025, 46(1): 373-382 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1485

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

中图分类号： TM911.42

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