摘要
氧气传输阻力对燃料电池性能有着重要的影响,而该阻力的大小也与料浆配方的I/C比和催化剂种类密切相关。本工作研究了不同I/C比对不同型号低载量合金催化剂性能的影响,使用了极限电流法对燃料电池的氧传质阻力变化规律进行分析。测试结果表明,虽然合金催化剂的电催化活性高于纯铂催化剂(PtCo/C>PtRu/C>Pt/C),但是I/C比变化对电池性能的影响更为关键:PtRu/C催化剂极限电流密度最低,氧气传输能力受到I/C比的影响最严重,PtCo/C次之,Pt/C催化剂的氧气传输能力受到的影响最小。与之对应的,三种催化剂的电池性能依次为Pt/C≈PtCo/C>PtRu/C。
Oxygen transport resistance has an important effect on fuel cell performance,and the magnitude of this resistance is also closely related to the I/C ratio of the slurry formulation and the catalyst type.In this work,the limiting current method was used to analyze the variation pattern of oxygen transport resistance of fuel cells by studying the effect of different I/C ratios on the performance of different types of low loading alloy catalysts.The test results show that although the electrocatalytic activity of alloy catalysts is higher than that of pure Pt catalysts(PtCo/C>PtRu/C>Pt/C),the I/C ratio variation has a more critical effect on the cell performance:PtRu/C catalysts have the lowest limit current density and the oxygen transport capacity is most severely affected by the I/C ratio,followed by PtCo/C,and Pt/C catalysts have the least affected.Correspondingly,the cell performance of the three catalysts is Pt/C≈PtCo/C>PtRu/C in order.
作者
谢雨秋
郭伟
XIE Yuqiu;GUO Wei(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;Foshan Xianhu Laboratory,Foshan 528200,Guangdong,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第14期177-181,共5页
Materials Reports
基金
国家自然科学基金(21975192)
国防基础科研(JCKY2020206B507)
先进能源科学与技术广东省实验室佛山分中心(佛山仙湖实验室)开放基金(XHD2022-002)。
