LSGM electrolytes

Anode-supported SOFCs with LSGM electrolytes (5-fJ.m thick) and SDC interlayers (2-fim thick) were fabricated by pulsed laser deposition [243],... 

Horita et al. [97] studied the electrochemical polarization performance of Laj x SrxCo03 (x = 0.2, 0.3, 0.4) cathodes on (La, Sr) (Gd, Mg)03, LSGM electrolyte. With an increase of Sr content in LSC, the conductivity increases above 1400 Scm-1 (for x = 0.3, 0.4). The temperature dependence of the conductivity shows metallic behavior, especially above x = 0.3. The polarization activity for the 02 reduction increases with the Sr content in LSC. The cathodic polarization curves at the porous... 

To prevent low-temperature LSGM electrolytes from inter-reacting with Ni in the anode and forming a nonconductive barrier layer [36],... 

Smo.sSro.sCoOa has been used as a cathode material for the LSGM electrolyte, and a low cathodic overpotential of less than 50 mV at 0.5 A/cm was obtained at 873 K [203]. BaCoOa was also investigated as a novel cathode material for the... 

LSGM electrolyte. Bao,6Lao.4Co03 showed a high surface activity for oxygen dissociation and exhibited the same level of cathodic overpotential as Smo.5Sro.5Co03 as shown in Fig. 6.17 [204]. 

Figure 7-24 Single Cell Performance of LSGM Electrolyte (50 p,m thick)... 

Figure 7.23 Typicai singie cell paformance of LSGM electrolyte (500-m thick).

TOTO attempted to fabricate micro tubes in various types. Eventually, they adopted the anode-supported tubular cells with the LSGM electrolyte. The adoption of anode-supported cells much thinner LSGM electrolyte can be used, leading to higher benefits in performance. On the other hand, technological difficulty in the fabrication process becomes more visible to avoid interdiffusion between cell components. Details are also described in a separate chapter of this book. 

Basic Properties of the LSGM Electrolyte System 4.5.1 Phase Diagram of La-Sr-Ga-Mg-0... 

Performance of a Single Cell Using LSGM Electrolyte... 

---