Impregnated LaCo0.3Fe0.67Pd0.03O3-δ as a promising electrocatalyst for “symmetrical” intermediate-temperature solid oxide fuel cells
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The higher cost of solid oxide fuel cells (SOFCs) compared with the cost of conventional energy conversion devices has greatly hindered their wide application. The symmetrical SOFCs that use identical material as both cathode and anode can greatly reduce the fabrication cost. The key point for the development of symmetrical SOFCs is to find a promising electrode catalyst. Herein, we report a LaCo0.3Fe0.67Pd0.03O3-δ (LCFPd) material with superior catalytic activity under both oxidizing and reducing atmospheres due to the slight Pd-doping. An LCFPd-infiltrated Sm0.2Ce0.8O1.9 (SDC) electrode possesses competitive oxygen reduction activity compared with a Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) cathode and exhibits even better fuel oxidation activity than the state-of-the-art Ni-SDC composite anode. In addition, the superiority of LCFPd is demonstrated through the high and stable power outputs that can be obtained from a symmetrical SOFC with an LCFPd-based electrode as both cathode and anode.
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Su, Chao; Wang, Wei; Liu, M.; Tadé, Moses; Shao, Zongping (2015)Symmetrical solid oxide fuel cells (SOFCs) have attracted increasing attention due to their potential for improved thermomechanical compatibility of the electrolyte and the electrodes, reduced fabrication cost, and enhanced ...
Yang, Guangming; Su, Chao; Ran, Ran; Tade, Moses; Shao, Zongping (2014)Advanced symmetric solid oxide fuel cells (SOFCs) with a reducible electrode were proposed. Specifically, La2NiO4 + La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) [or Sm0.2Ce0.8O1.9 (SDC)] composite electrodes were successfully ...
Nano La0.6Ca0.4Fe0.8Ni0.2O3-delta decorated porous doped ceria as a novel cobalt-free electrode for "symmetrical" solid oxide fuel cellsYang, G.; Su, C.; Chen, Y.; Tade, Moses; Shao, Zongping (2014)Here we report that the nano La0.6Ca0.4Fe0.8Ni0.2O3−δ (LCFN) decorated Sm0.2Ce0.8O1.9 (SDC) composite oxide, prepared by the solution infiltration method, could function well as a cobalt-free electrode material for ...