无机材料学报2024，Vol.39Issue(4)：367-373,7.DOI:10.15541/jim20230353
LaNi0.6Fe0.4O3阴极接触材料导电特性调控及其对SOFC电化学性能的影响
LaNi0.6Fe0.4O3 Cathode Contact Material:Electrical Conducting Property Manipulation and Its Effect on SOFC Electrochemical Performance
摘要
Abstract
In order to fulfil the requirement of low area specific resistance and highly stable cathode contact material in planar type solid oxide fuel cell(SOFC)stack assembling,this work investigated the electrical property evolution of LaNi0.6Fe0.4O3(LNF)with manipulated particle size and its effect on SOFC electrochemical performance.The optimized pre-treatment strategies of LNF were obtained with decreasing ASR,improving SOFC single cell performance and thermal cycling stability.Results show that,the dry-pressed LNF-2 and the high-temperature sintering-pre-treated LNF-3 possess smaller area specific resistances of 0.074 and 0.076 Ω·cm²,respectively,more stable particle sizes with shorter conditioning state and faster transfer into steady state after applying 1 A/cm2 current load at 750℃.Specifically,the single cell with LNF-2 shows improved peak power density of 0.94 W/cm2 compared to 0.66 W/cm2 of LNF without treatment at 750℃.However,it exhibits significant performance degradation during thermal cycling,decreasing by 20%.In contrast,the peak power density of LNF-3 single cell decreases by only 4%after 20 thermal cycles.This work is expected to provide guideline and valued reference for reliable SOFC stack assembling and stable operation.关键词
固体氧化物燃料电池(SOFC)/阴极接触材料/LaNi0.6Fe0.4O3/热循环Key words
solid oxide fuel cell(SOFC)/cathode contact material/LaNi0.6Fe0.4O3/thermal cycling分类
化学化工引用本文复制引用
张琨,王宇,朱腾龙,孙凯华,韩敏芳,钟秦..LaNi0.6Fe0.4O3阴极接触材料导电特性调控及其对SOFC电化学性能的影响[J].无机材料学报,2024,39(4):367-373,7.基金项目
国家重点研发计划项目(2018YFB1502203) （2018YFB1502203）
江苏省碳达峰碳中和科技创新专项(BE2022029)National Key R&D Program of China(2018YFB1502203) （BE2022029）
Key R&D Program of Jiangsu Province(BE2022029) （BE2022029）
