A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

Zhicheng Wang, Siqi Wang, Shiyan Jiao, Wenjian Weng, Kui Cheng, Bin Qian, Hailin Yu, Yimin Chao

Research output: Contribution to journalArticle

8 Citations (Scopus)
11 Downloads (Pure)

Abstract

A series of Ni1-xCux/Sm-doped ceria (Ni1-xCux/SDC) anodes have been prepared through introducing a soluble pore former with the co-pressing and co-sintering process. Uniform hierarchical porous microstructures are formed in Ni0.9Cu0.1/SDC anode with interconnected large pores of 2–5 μm and 100–300 nm small pores on the wall. The solid oxide fuel cell (SOFC) based on such anode exhibits exceptional electrochemical catalytic activity for dry CH4 oxidation and a maximum power density of 379 mW cm−2 is acquired at 600 °C. Durability test results show only 2.4% power density drop is observed after 72 h operation under a constant cell voltage of 0.5 V. The results have demonstrated that the optimization of anode microstructures is an effective way to improve the performance and long-term stability of Ni1-xCux alloy-based anode-supported SOFC.
Original languageEnglish
Pages (from-to)186–192
JournalJournal of Alloys and Compounds
Volume702
Early online date21 Jan 2017
DOIs
Publication statusPublished - 25 Apr 2017

Keywords

  • Hierarchical porous microstructure
  • Ni1-xCux alloy-based anode
  • Solid oxide fuel cells
  • Methane
  • Long-term stability

Cite this