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Efficiency of 3D-Ordered Macroporous La0.6Sr0.4Co0.2Fe0.8O3 as an Electrocatalyst for Aprotic Li-O2 Batteries |
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| Authors: | Dr Junfang Cheng Dr Yuexing Jiang Dr Lu Zou Dr Ming Zhang Dr Guozhu Zhang Dr Ziling Wang Dr Yizhen Huang Prof Bo Chi Prof Jian Pu Prof Li Jian |
| Institution: | 1. Center for Fuel Cell Innovation, Huazhong University of Science and Technology, Wuhan, 430074 China
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku Fukuoka, 819-0395 Japan;2. Center for Fuel Cell Innovation, Huazhong University of Science and Technology, Wuhan, 430074 China;3. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002 China;4. Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580 Japan |
| 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. |
| Keywords: | Li-O2 batteries perovskite phases nanostructures overpotential catalytic efficiency |