An optimized synthesis route for high performance composite cathode based on a layered perovskite oxide of PrBa 0.92 Co 2 O 6-Δ with cationic deficiency

Idrees，Asim1; Jiang，Xuening1; Liu，Gang1; Luo，Hao1; Zhang，Qingyu1; Jiang，Lei2; Li，Xiannan3; Xu，Baomin3

2019-02-08

10.1016/j.ijhydene.2018.12.183

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

For Solid Oxide Fuel Cells (SOFCs) to become an economically attractive energy conversion technology, cathode materials with high catalytic activity over oxygen reduction reaction (ORR) and low cost are desired. In this work, a composite cathode material of PrBa Co O -40 wt%Ce Sm O (OPCC) based on a layered perovskite oxide of PrBa Co O with Ba -deficiency at A-sites has been successfully synthesized with a facile and effective one-pot sol-gel method, which was comparatively studied with the counterpart BMCC synthesized with the traditional ball-milling method and the single phase cathode of PrBa Co O . Among the three cathodes, OPCC showed the lowest area specific resistances (ASRs) in both air and oxygen atmospheres, indicating the highest ORR catalytic activity. Such performance improvement for OPCC was closely related to its optimized microstructures obtained with the liquid-mixing one-pot synthesis method and existence of Ce Sm O that has a high ionic conductivity. I-V and I-P curves were measured for the anode-supported single cells with the three cathodes, and the OPCC-based cell showed the highest peak power densities with typical value of 1011 mW cm at 750 °C in contrast to 783 mW cm for the BMCC-based cell and 574 mW cm for the PrBa Co O -based cell respectively. The OPCC-based cell also showed a stable performance with no obvious degradation over 100 h at 700 °C.

Cathode Electrochemical performance Fuel cell Microstructure Synthesis

SCI ; EI

英语

其他

Shenzhen Science and Technology Innovation Commission[] ; Foundation for Fundamental Research on Matter[Discipline Arrangement] ; [2017YFA0402501] ; Fundamental Research Funds for the Central Universities[DUT18LAB06]

WOS:000458224700025

Elsevier Ltd

20190306377191

Ball milling ; Barium compounds ; Catalyst activity ; Cathodes ; Cerium compounds ; Costs ; Electrolytic reduction ; Energy conversion ; Fuel cells ; Microstructure ; Oxygen ; Perovskite ; Praseodymium compounds ; Samarium compounds ; Sol-gel process ; Sol-gels ; Synthesis (chemical)

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Fuel Cells:702.2 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Glass:812.3 ; Cost and Value Engineering; Industrial Economics:911 ; Materials Science:951

ENGINEERING

2-s2.0-85059846602

Scopus

1.Key Laboratory of Materials Modification by LaserIonand Electron Beams (Ministry of Education)School of PhysicsDalian University of Technology,Dalian,116024,China
2.Dalian Institute of Chemical and PhysicsCAS,Dalian,116023,China
3.Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen,518055,China

Idrees，Asim,Jiang，Xuening,Liu，Gang,et al. An optimized synthesis route for high performance composite cathode based on a layered perovskite oxide of PrBa 0.92 Co 2 O 6-Δ with cationic deficiency[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2019,44(8):4271-4280.

Idrees，Asim.,Jiang，Xuening.,Liu，Gang.,Luo，Hao.,Zhang，Qingyu.,...&Xu，Baomin.(2019).An optimized synthesis route for high performance composite cathode based on a layered perovskite oxide of PrBa 0.92 Co 2 O 6-Δ with cationic deficiency.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,44(8),4271-4280.

Idrees，Asim,et al."An optimized synthesis route for high performance composite cathode based on a layered perovskite oxide of PrBa 0.92 Co 2 O 6-Δ with cationic deficiency".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 44.8(2019):4271-4280.