燃料气参数对固体氧化物燃料电池放电特性影响研究  

Study on Effects of Fuel Gas Parameters on Discharge Characteristics of Solid Oxide Fuel Cells

作　　者：刘汉宇 季炫宇[1,2] 周雄 杨宇[1] LIU Hanyu;JI Xuanyu;ZHOU Xiong;YANG Yu(Chongqing University of Science and Technology,Chongqing 401331,China;Provincial and Ministerial Collaborative Innovation Center for Domestic Garbage Resource Treatment,Chongqing 401331,China)

机构地区：[1]重庆科技学院,重庆401331 [2]生活垃圾资源化处理省部共建协同创新中心,重庆401331

出　　处：《湖南电力》2023年第6期31-36,共6页Hunan Electric Power

基　　金：国家自然科学基金青年科学基金项目(52100138);重庆科技学院硕士研究生科技创新项目(YKJCX2220337)。

摘　　要：固体氧化物燃料电池(solid oxide fuel cell,SOFC)技术是一种清洁高效的发电技术,其高温特性容易实现热电联产,具有较好的发展前景。为探究不同燃料气的参数对固体氧化物燃料电池放电特性的影响,搭建500 W SOFC实验台架,进行氢气放电实验、甲烷干重整放电实验及耐久性实验,分析燃料气流量、Q_(CO_(2))/Q_(CH_(4))进气比例等参数对开路电压及电功率的影响。结果表明:随着燃料流量的增加,电池的开路电压、功率会随之增加,在2 L/min时增幅趋于稳定;当Q_(CO_(2))/Q_(CH_(4))=1∶1、CH 4流量为2 L/min时,甲烷干重整放电性能最佳;当Q_(CO_(2))/Q_(CH_(4))=1.5时,SOFC放电性能受流量影响较小,在此进气比例下,更利于实现低燃料流量、高电流密度放电,使SOFC放电功率最大化。Solid oxide fuel cell(SOFC)technology is a clean and efficient power generation technology,and its high temperature characteristics make it easy to realize cogeneration,which has a good development prospect.In order to investigate the influence of different fuel gas parameters on the discharge characteristics of SOFC,a 500W SOFC experimental rig was built,and hydrogen discharge experiments,methane dry reforming discharge experiments,and durability experiments were conducted to analyze the influence of fuel gas flow rate and CH_(4)/CO_(2) inlet ratio on the open-circuit voltage and electric power.The results show that with the increase of fuel flow,the open-circuit voltage of the battery,the power will increase,and the increase tends to stabilize at 2 L/min.When Q_(CO_(2))/Q_(CH_(4))=1∶1 and_(CH_(4))flow rate is 2 L/min,the methane dry reforming discharge performance is the best.When Q_(CO_(2))/Q_(CH_(4))=1.5,the SOFC discharge performance is less affected by the flow rate,and under this inlet ratio,it is more conducive to achieve low fuel flow rate and high current density discharge to maximize the SOFC discharge power.

关 键 词：固体氧化物燃料电池 氢气 甲烷干重整 进气比 进气流量 

分 类 号：TM911.4[电气工程—电力电子与电力传动]