原位析出法制备CoCu纳米颗粒均匀修饰PrSr(CoCu)_(0.2)Mn_(0.8)O_(4-δ)陶瓷阳极材料  

In-situ fabrication of CoCu alloy nanoparticles decorated PrSr(CoCu)_(0.2)Mn_(0.8)O_(4-δ) ceramic anode materials

作　　者：王子鸣 谭婷 宋琛 刘太楷 刘敏 杨成浩 WANG Ziming;TAN Ting;SONG Chen;LIU Taikai;LIU Min;YANG Chenghao(School of Environment and Energy,South China University of Technology,Guangzhou 510651,China;The Key Lab of Guangdong for Modern Surface Engineering Technology,National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]华南理工大学环境与能源学院,广东广州510006 [2]广东省科学院新材料研究所,现代材料表面工程技术国家工程实验室,广东省现代表面工程技术重点实验室,广东广州510650

出　　处：《材料研究与应用》2021年第2期94-101,共8页Materials Research and Application

基　　金：国家重点研发计划(2018YFB1502603);广东省应用型科技研发专项(2017B090916002).

摘　　要：利用原位析法制备出CoCu合金(CCA)纳米颗粒均匀包覆的Ruddlesden-Popper(RP)型层状钙钛矿PrSr(CoCu)0.2 Mn 0.8 O 4-δ(RP-PSCCM)材料,通过XRD和SEM两种表征方法证明该阳极的晶体结构和表面析出的颗粒情况.RP-PSCCM-CCA阳极材料的电导率、对称电池的极化阻抗及单电池的性能等测试结果表明,RP-PSCCM-CCA具有优异的催化活性.RP-PSCCM-CCA阳极材料拥有较低的活化能,在800℃时电导率达到0.55 S/cm,优于传统的钙钛矿阳极.在800℃下的H 2气氛中,RP-PSCCM-CCA-GDC/LSGM/RP-PSCCM-CCA-GDC对称电池的极化阻抗达到0.125Ω·cm^(2),而RP-PSCCM-CCA-GDC/LSGM/LSCF-GDC单电池的最大功率密度也达到了696 mW/cm^(2),远超过其他的钙钛矿阳极,特别是Cu基阳极材料.以C 3H 8为燃料时,单电池有着稳定的功率输出,表明RP-PSCCM-CCA是一种优异的抗积碳陶瓷阳极材料.In this paper,CoCu alloy(CCA)nanoparticles decorated ruddlesden-popper(RP)type layered perovskite PrSr(CoCu)0.2 Mn 0.8 O 4-δ(RP-PSCCM)ceramic anode has been in-situ reduction method.Crystal structure and morphology of the precipitated nanoparticles on the surface of the anode were confirmed by XRD and SEM.Conductivity of RP-PSCCM-CCA,polarization impedance of symmetric cell with RP-PSCCM-CCA anode in H 2 have been studied,the results indicate that RP-PSCCM-CCA shows a good catalytic activity.Moreover,the RP-PSCCM-CCA-GDC/LSGM/LSCF-GDC single cell exhibits a maximum power density of 696 mW/cm^(2) at 800℃,and excellent coking resistance in C 3H 8.Overall,RP-PSCCM-CCA has been demonstrated as promising anode materials for SOFCs.

关 键 词：固体氧化物燃料电池 阳极 层状钙钛矿 合金纳米颗粒 原位析出 

分 类 号：TM911.4[电气工程—电力电子与电力传动]