Conductivity of SDC and (Li/Na)2CO3 composite electrolytes in reducing and oxidising atmospheres

SDC/Na2CO3 nanocomposite: New freeze drying based synthesis and application as electrolyte in low-temperature solid oxide fuel cells

“…The SDC9010 sample shows the highest proton conductivity as compared to other nanocomposite samples, which means the optimized volume fraction of Na 2 CO 3 in the nanocomposite is 24% corresponding to weight fraction of 10%. This result is not in agreement with the previous studies reported by A. Bodé n. [29] In their study, it is concluded that the conductivity continuously increases with increasing the carbonate content based on the EIS measurement. EIS technique, despite its versatility, is not suitable for the composite electrolyte, which is a multi-ion-conducting system.…”

“…With increasing the volume fraction of Na 2 CO 3 from 13% to 41% (c/o Table 1), the thickness of Na 2 CO 3 coating increase and it becomes difficult for SDC to form a continuous phase; however, it can be seen clearly from Fig. 2(aed) that the Na 2 CO 3 phase in all the nanocomposite sample is evenly distributed without any agglomeration or crystal formed, which is different to what Huang et al [28] or Bodé n et al [29] i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 7 ( 2 0 1 2 ) 1 9 3 8 0 e1 9 3 8 7…”

Effect of sintering temperature on surface morphology and electrical properties of samarium-doped ceria carbonate for solid oxide fuel cells

“…These results were in accordance with the increase in crystallite sizes of the SDCC composite. Therefore, the mixture of (Li/Na) carbonate and SDC particles was not incorporated into the SDC lattice and mainly surrounded the SDC particles in amorphous form, which is in agreement with results of previous reports [22,25].…”

“…Bodèn et al [22] achieved high ionic conductivity and low activation energy for the composite electrolyte with 80% SDC and 20% (Li/Na) carbonate. They found that conductivity strongly depends on the carbonate content.…”

INFLUENCE OF SINTERING TEMPERATURE ON NiO-SDCC ANODE FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS (LT-SOFCs)

“…Only a few studies on anode-supported SOFCs operating at low temperatures have been conducted. Samariumdoped cerium oxide (SDC) mixed with lithium carbonate (Li 2 CO 3 ) and sodium carbonate (Na 2 CO 3 ) has potential as composite electrolyte for SOFCs operating at less than 600°C [17][18][19]. Jarot et al [20] reported that NiO-SDC (C-carbonates) can be used as SOFC anode substrate at low operating temperatures (< 600°C).…”