期刊
JOURNAL OF POWER SOURCES
卷 290, 期 -, 页码 1-7出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.04.057
关键词
Micro-tubular SOFCs; Phase inversion; Polymer binder; Barium sulfate
资金
- U.S. National Science Foundation [DMR-1210792]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1210792] Funding Source: National Science Foundation
Three sulfur-free polymer binders (ethyl cellulose (EC), polyvinylidene fluoride (PVDF), polyetherimide (PEI)) and sulfur-containing polyethersulfone (PESO polymer binder were used to fabricate NiO -BaZr0.1Ce0.7Y0.1Yb0.1O3-delta (BZCYYb) anode substrates. The overall influence of polymer binder on the anode supports was evaluated. Sulfide impurity in the anode substrate was identified when sulfur-containing PESf was used as the polymer binder. Single cells based on different anode supports were characterized in anode-supported MT-SOFCs with the cell configuration of Ni-BZCYYb anode, BZCYYb proton-conducting electrolyte and La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF)-BZCYYb cathode at 650 degrees C, 600 degrees C and 550 degrees C, using humidified hydrogen as fuel and ambient air as oxidant. MT-SOFCs of the anode fabricated using PEI show maximum power density of 0.45 Wcm(-2), 0.34 Wcm(-2) and 0.23 Wcm(-2) at 650 degrees C, 600 degrees C and 550 degrees C respectively, compared with 0.35 Wcm(-2), 0.27 Wcm(-2) and 0.18 Wcm(-2) for cells fabricated with PESE The difference in cell performance was attributed to the phase purity of the anode fabricated by different polymer binders. Sulfur-free polymer binder PEI exhibits advantages over the commonly applied PESf and other sulfur-free polymer binders, pointing to a new direction in the fabrication of micro-tubular oxide substrates for energy conversion and storage. (C) 2015 Elsevier B.V. All rights reserved.
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