Efficiency of 3D-Ordered Macroporous La0.6 Sr0.4 Co0.2 Fe0.8 O3 as an Electrocatalyst for Aprotic Li-O2 Batteries

ChemistryOpen
Junfang ChengLi Jian

Abstract

Li-O2 batteries (LOBs) with an extremely high theoretical energy density have been reported to be the most promising candidates for future electric storage systems. Porous catalysts can be beneficial for LOBs. Herein, 3D-ordered macroporous La0.6Sr0.4Co0.2Fe0.8O3 perovskite oxides (3D-LSCF) are applied as cathode catalysts in LOBs. With a high Brunauer-Emmett-Teller surface area (21.8 m2 g-1) and unique honeycomb-like macroporous structure, the 3D-LSCF catalysts possess a much higher efficiency than La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) nanoparticles. The unique 3D-ordered macropores play a significant role in the product deposition as well as oxygen and electrolyte transmission, which are crucial for the discharge-charge processes of LOBs.

References

Feb 8, 2008·Nature·M Armand, J-M Tarascon
Dec 16, 2011·Nature Materials·Peter G BruceJean-Marie Tarascon
Nov 20, 2012·Angewandte Chemie·Robert BlackLinda F Nazar
Sep 24, 2013·Journal of the American Chemical Society·Dengyun ZhaiLarry A Curtiss
Sep 24, 2013·Chemical Society Reviews·Zhong-Li WangXin-Bo Zhang
Feb 19, 2016·ACS Applied Materials & Interfaces·Ahilan VigneshSangaraju Shanmugam

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Methods Mentioned

BETA
X‐ray
scanning electron microscopy

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