电化学（中英文）2024，Vol.30Issue(1)：46-54,9.DOI:10.61558/2993-074X.3430
以掺氢天然气为燃料直接内重整固体氧化物电池堆的稳定性
Stability of a Solid Oxide Cell Stack under Direct Internal-reforming of Hydrogen-blended Methane
摘要
Abstract
In this work,the long-term stability and degradation mechanism of a direct internal-reforming solid oxide fuel cell stack(IR-SOFC stack)using hydrogen-blended methane steam reforming were investigated.An overall degradation rate of 2.3％.kh-1 was found after the stack was operated for 3000 hours,indicating a good long-term stability.However,the voltages of the two cells in the stack were increased at the rates of 3.38 mV kh-1 and 3.78 mV·kh-1,while the area specific resistances of the three metal interconnects in the stack were increased to 0.276 Ω·cm2,0.254Ω·cm2 and 0.249 Ω·cm2.The degradation of the stack might be caused by segregation of chromium on the surface of metal interconnects and the formation of SrCrO4 insulating phase in the current collecting layer of the cathode,which result in an increase in the interfacial resistance and a decrease in the stack performance.The long-term performance of a flat-tube IR-SOFC stack could be further improved by suitably coating the metal interconnect surface.This work provides theoretical and experimental guideline for the application of hydrogen-blended methane steam reforming in flat-tube IR-SOFC stacks.关键词
掺氢天然气/内重整/稳定性/固体氧化物电堆Key words
Hydrogen-blended methane steam/Internal-reforming/Stability/Solid oxide fuel cell stack引用本文复制引用
汤亚飞,武安祺,韩贝贝,刘华,包善军,林王林,陈铭,官万兵,Subhash C.Singhal..以掺氢天然气为燃料直接内重整固体氧化物电池堆的稳定性[J].电化学（中英文）,2024,30(1):46-54,9.基金项目
We gratefully acknowledge the financial sup-ports from the National Key Research and Devel-opment Program of China(No.2022YFB4003602),National Natural Science Foundation of China(No.U20A20251,No.11932005),Key R & D projects in Zhejiang Province(No.2021C01101),and Ningbo Key R&D project(No.2023Z145). （No.2022YFB4003602）
