BaO改性阳极平管型固体氧化物燃料电池的直接甲醇发电特性  

Direct Methanol Operation on BaO Modified Anode in Flat-tube Solid Oxide Fuel Cells

作　　者：秦岭 李帅帆 任启航 杨慧文 杨钧 桑君康 官万兵 QIN Ling;LI Shuaifan;REN Qihang;YANG Huiwen;YANG Jun;SANG Junkang;GUAN Wanbing(Nano Science and Technology Institute,University of Science&Technology of China,Suzhou 215123,Jiangsu,China;Zhejiang Key Laboratory of Advanced Fuel Cell and Electrolytic Cell Technology,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,Zhejiang,China;Zhejiang H2-Bank Co.LTD,Ningbo 315899,Zhejiang,China)

机构地区：[1]中国科学技术大学纳米科学技术学院,江苏苏州215123 [2]中国科学院宁波材料技术与工程研究所,浙江省先进燃料电池与电解池技术重点实验室,浙江宁波315201 [3]浙江氢邦科技有限公司,浙江宁波315020

出　　处：《硅酸盐学报》2025年第2期280-288,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(22209191);国家重点研发计划项目(2021YFB2500402,2022YFB4002203);宁波市重点研发计划项目(2023Z145,2023Z103)。

摘　　要：针对甲醇燃料固体氧化物燃料电池(SOFC)镍基阳极存在的积碳问题,采用湿法浸渍对平管型SOFC的Ni/氧化钇稳定氧化锆(YSZ)阳极表面进行BaO修饰改性,提升电池的抗积碳性能。结果表明:在750℃、水碳比(摩尔比)为0.75条件下,基于甲醇燃料的平管型SOFC经过Ba O阳极表面改性后,在0.8 V时的功率密度由326.72 mW/cm^(2)增加至452.87 mW/cm^(2)。以200 mA/cm^(2)进行恒流放电长期耐久性测试,平管型SOFC经过BaO阳极表面改性后,稳定运行时间由4 h提升至500 h,改性后的阳极表面未发现碳沉积。BaO阳极表面改性可提升电池中甲醇内重整效率,有效提高甲醇燃料SOFC的耐久性。Introduction The extensive use of fossil fuel resources has a serious impact on the environment,and hence energy conservation and CO_(2)emission reduction have become the focuses of current development.Solid oxide fuel cells(SOFCs)have attracted the research attention because of the outstanding energy conversion efficiency,wide range of fuel choices,no pollution,and high quality waste.H_(2)is the ideal fuel for SOFCs,but its low volumetric energy density and the requirement of high pressure to be liquefied,making it difficult to store and transport.At ambient temperature and pressure,methanol is liquid and its volumetric energy density is much higher than that of hydrogen,which makes methanol easy to storage and transport as a good hydrogen carrier.Furthermore,methanol has been quite mature production process.The industrial methanol production was hydrogenation of CO and CO_(2).SOFCs can generate power with direct internal methanol reforming.However,the main problem of direct methanol fed SOFCs is carbon deposition.The formation of carbon deposition not only reduces the cell performance,but affects the anode structure as well.In this study,the anode surface of flat-tube anode supported SOFCs was modified by Barium.The cell performance,durability,and methanol conversion of the unmodified and modified SOFCs were compared and evaluated under methanol atmosphere with a steam/carbon ratio of 0.75.Methods The anode support was composed of nickel oxide with 3%Y_(2)O_(3)-stabilized ZrO_(2)(NiO-3YSZ,in mole),and the anode functional layer was made up of nickel oxide with 8%Y_(2)O_(3)-stabilized ZrO_(2)(NiO-8YSZ).The electrolyte,barrier layer,and cathode layer were 8YSZ,Gd_(0.1)Ce_(0.9)O_(2-δ)(GDC),and La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-δ)-GDC(LSCF-GDC),respectively.The active cathode area was60 cm^(2).The cell is denoted as NiO-3YSZ|NiO-8YSZ|8YSZ|GDC|LSCF-GDC.Using 15.68 g Ba(NO_(3))_(2)powder dissolved in 200 mL deionized water,being stirred at 70℃for 2 h,to obtain 0.3 mol/L barium nitrate precursor solution for we

关 键 词：平管型固体氧化物燃料电池 氧化锆 甲醇 耐久性 积碳 

分 类 号：TM911.4[电气工程—电力电子与电力传动]