Cobalt-free cathode material SrFe0.9Nb0.1O3− for intermediate-temperature solid oxide fuel cells

Novel cobalt-free cathode material (Nd0.9La0.1)2(Ni0.74Cu0.21Al0.05)O4+δ for intermediate-temperature solid oxide fuel cells

“…ASRs values of 0.266, 0.121, 0.070, and 0.048 Ω cm 2 are obtained at 650, 700, 750, and 800 1C in air, respectively. These ASR values are much lower than those for other cobalt-free cathodes reported by various groups, such as La 2 NiO 4 þ δ [24], Pr 2 Ni 0.6 -Cu 0.4 O 4 [25], SrFe 0.9 Nb 0.1 O 3 À δ [26], La 0.6 Sr 0.4 Fe 0.8 Cu 0.2 O 3 À δ [27], and Ba 0.5 Sr 0.5 Zn 0.2 Fe 0.8 O 3 À δ [21]. The lower ASR value of the NLNCA cathode shows high catalytic activity for oxygen reduction at intermediate temperatures.…”

Evaluation of double perovskite Sr2FeTiO6−δ as potential cathode or anode materials for intermediate-temperature solid oxide fuel cells

“…Recently, many "cobalt-free" cathode materials are reported, which show high compatibility with other cell components and good long term stability as well as favorable electrochemical performance [28][29][30][31][32][33][34].…”

“…Moreover, the cost of the iron is lower than that of cobalt, and it is beneficial for industrial application. Thus, Fe-based composite oxides as promising cathodes for SOFCs have attracted much attention in recent years, such as Ba 0.5 Sr 0.5 Zn 0.2 Fe 0.8 O 3 À δ [32], SrFe 0.9 Nb 0.1 O 3 À δ [33] and La 0.6 Sr 0.4 Fe 0.8 Cu 0.2 O 3 À δ [34].…”

The effect of sintering temperature on the performance of IT-SOFC SrFe0.9Sb0.1O3- perovskite oxide

“…It has been shown that moderate doping has no significant effect on the ionic conductivity of dopant derivatives. In the early work, SrFeO 3−δ based cubic perovskite oxide, SrFe 1−x Mo x O 3−δ , and SrFe 0.9 Nb 0.1 O 3−δ have confirmed the positive electrode material with good potential for the electrochemical performance of medium temperature solid oxide fuel cells [7,8] . In particular, Ling et al [9] have studied a cobalt-free SrFe 0.9 Sb 0.1 O 3−δ cathode material for proton-conducting SOFCs with stable BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ electrolyte, and confirmed the applicability of mixed conductive cathode materials.…”