Composite Cathode Study for Low Temperature SOFC

2019 ◽  
Vol 25 (2) ◽  
pp. 2463-2471 ◽  
Author(s):  
Xinge Zhang ◽  
Mark Robertson ◽  
Cyrille Decès-Petit ◽  
Olivera Kesler
Keyword(s):  
Low Temperature ◽  
Composite Cathode ◽  
Low Temperature Sofc

Influence of Binary Carbonate on the Physical and Chemical Properties of Composite Cathode for Low-Temperature SOFC

2015 ◽  
Vol 1087 ◽  
pp. 177-181 ◽  
Author(s):  
Linda Agun ◽  
Sufizar Ahmad ◽  
Andanastuti Muchtar ◽  
Hamimah Abd Rahman
Keyword(s):  
Low Temperature ◽  
Chemical Properties ◽  
Composite Cathode ◽  
High Energy ◽  
X Ray Diffraction ◽  
Composite Powders ◽  
Molar Ratios ◽  
Energy Ball ◽  
Low Temperature Sofc ◽  
Physical And Chemical

Cathode-carbonate is a prospective material for low-temperature solid oxide fuel cells (LT-SOFCs). The influence of carbonate on the properties of cathode LT-SOFCs was studied. Different amounts of binary carbonate (Li2CO3:Na2CO3) were prepared at molar ratios of 67:33 and 62:38. The cathode composite powders were calcined at 750 °C for 2 h before uniaxial press. X-ray diffraction results confirmed that the carbonate in cathode composite existed as amorphous phase. Therefore, carbonate has a good compatibility with cathode composite powders. High-energy ball milling maintained the composite cathode powders at the nanoscale. The developed cathode composite also gave acceptable porosity values between 26% and 27%. The findings show that that the amount of binary (Li/Na) carbonate in cathode composite influences its properties, indicating potential for LT-SOFCs applications.

Effects of Soaking Duration on the Properties of LSCF–SDCC for Low-Temperature SOFC

2016 ◽  
Vol 1133 ◽  
pp. 28-32
Author(s):  
Linda Agun ◽  
Siti Fairus Jimat ◽  
Hamimah Abd Rahman
Keyword(s):  
Grain Size ◽  
Low Temperature ◽  
High Efficiency ◽  
Composite Cathode ◽  
X Ray Diffraction ◽  
Soaking Time ◽  
Processing Cost ◽  
Time Scanning ◽  
Low Temperature Sofc ◽  
Density Results

Solid oxide fuel cells (SOFCs) offer the advantages of high efficiency, low pollution emission, and low processing cost. SOFC quality is strongly influenced by the preparation process. Composite La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) samarium-doped ceria carbonate (SDCC) cathode for low-temperature SOFCs was developed, and the effect of sintering soaking time on the physical properties of an LSCF–SDCC composite cathode was studied. Composite cathode powders with 50 wt.% LSCF and 50 wt.% SDCC were mixed before undergoing calcination and uniaxial pressing process. The pressed samples were sintered at 600 °C and soaked at 1, 2, and 3 hr. The porosity and density results obtained by the Archimedes method showed a decrement of porosity from 24.92% to 19.62% and an increment of density from 4.03 g cm−1 to 4.15 g cm−1 under 1 hr to 3 hr of soaking time. Scanning electron microscopy reveals that the grain size of the composite cathode surface increases with increasing soaking time. X-ray diffraction results demonstrate that the diffraction angles at 33o and 59o exhibit a decreasing SDCC peak because of the increasing grain size. However, the new peak of lithium chromium oxide (Li2CrO4) appears at an angle of 21.66° for 3 hr soaking time. The findings proved that soaking time influences the microstructure of the composite cathode.

Screening of ceria-based catalysts for internal methane reforming in low temperature SOFC

2010 ◽  
Vol 157 (1-4) ◽  
pp. 263-269 ◽  
Author(s):  
Cyril Gaudillère ◽  
Philippe Vernoux ◽  
Claude Mirodatos ◽  
Gilles Caboche ◽  
David Farrusseng
Keyword(s):  
Low Temperature ◽  
Methane Reforming ◽  
Low Temperature Sofc

Partially reduced Ni0.8Co0.15Al0.05LiO2-δ for low-temperature SOFC cathode

2020 ◽  
Author(s):  
Yuanjing Meng ◽  
Wei Zhang ◽  
Zili He ◽  
Chongqing Liu ◽  
Jie Gao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Sofc Cathode ◽  
Low Temperature Sofc

Enhancement of La0.6Sr0.4Co0.2Fe0.8O3-  Activity by Ion Implantation for Low-Temperature SOFC Cathodes

2014 ◽  
Vol 64 (2) ◽  
pp. 29-39
Author(s):  
Y.-L. Huang ◽  
C. Pellegrinelli ◽  
K. T. Lee ◽  
A. Perel ◽  
E. D. Wachsman
Keyword(s):  
Low Temperature ◽  
Ion Implantation ◽  
Low Temperature Sofc
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