Journal
CHEMICAL ENGINEERING JOURNAL
Volume 396, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.125237
Keywords
Solid oxide fuel cells; Cathode; Oxygen reduction reaction; Perovskite; CO2 tolerance
Categories
Funding
- One-Hundred Young Talents Program of Guangdong University of Technology, China [220413180]
- Foundation for Youth Innovative Talents in Higher Education of Guangdong Province, China [2018KQNCX060]
- Joint Funds of Basic and Applied Basic Research Foundation of Guangdong Province, China [2019A1515110322]
- Research Grant Council, University Grants Committee, Hong Kong SAR, China [PolyU 152064/18E]
- Research Incentive Performance Program of Chongqing Science and Technology Bureau, China [cstc2018jszx-zdyfxmX0016]
Ask authors/readers for more resources
Achieving superior electrocatalytic activity and thermal/chemical stability of cathode materials is the key to high-performance and durable solid oxide fuel cells (SOFC). Here, we present a barium and praseodymium co-substituted perovskite Bi0.7Pr0.1Ba0.2FeO3-delta (BPBF), a cubic-symmetry oxide phase, as a candidate cathode material for SOFC, with a focus on its crystalline structure, oxygen transport, electrocatalytic activity, as well as structural and chemical stability. The BPBF-based cathode delivers superior electroactivity, with a polarization area-specific-resistance as low as 0.056 Omega cm(2) at 700 degrees C in symmetrical cells. Surprisingly, when exposed to both air and 1 vol% CO2-containing air at 600 degrees C for 100 h, the electrode activity remains constant. The prominent thermal and chemical (CO2 tolerance) stability can be ascribed to co-substitution of barium and praseodymium and high acidity of bismuth ions. Endowed with favorable electrocatalytic activity and excellent durability, the BPBF-based material can be a promising cathode to facilitate commercialization of SOFC technology.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available