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首页> 外文期刊>ACS applied materials & interfaces >Bifunctional Hybrid Catalysts with Perovskite LaCo0.8Fe0.2O3 Nanowires and Reduced Graphene Oxide Sheets for an Efficient Li-O-2 Battery Cathode
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Bifunctional Hybrid Catalysts with Perovskite LaCo0.8Fe0.2O3 Nanowires and Reduced Graphene Oxide Sheets for an Efficient Li-O-2 Battery Cathode

机译：双官能杂交催化剂用Perovskite LacO0.8Fe0.2O3纳米线和用于高效的Li-O-2电池阴极的石墨烯氧化物片材

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摘要

In this paper, bifunctional catalysts consisting of perovskite LaCo0.8Fe0.2O3 nanowires (LCFO NWs) with reduced graphene oxide (rGO) sheets were prepared for use in lithiumoxygen (LiO2) battery cathodes. The prepared LCFO@rGO composite was explored as a cathode catalyst for LiO2 batteries, resulting in an outstanding discharge capacity (ca. 7088.2 mAh g(-1)) at the first cycle. Moreover, a high stability of the O-2-cathode with the LCFO@rGO catalyst was achieved over 56 cycles under the capacity limit of 500 mAh g(-1) with a rate of 200 mA g(-1), as compared to the Ketjenblack carbon and LCFO NWs. The enhanced electrochemical performance suggests that these hybrid composites of perovskite LCFO NWs with rGO nanosheets could be a perspective bifunctional catalyst for the cathode oxygen reduction and oxygen evolution reactions in the development of next-generation LiO2 battery cathodes.
机译：本文制备了由钙钛矿LacO0.8Fe0.2O3纳米线（LCFO NWS）组成的双官能催化剂，用于制备石墨烯氧化物（RGO）片材，用于锂氧氧氧（LiO 2）电池阴极。 将制备的LCFO @ rgo复合材料探索为LiO 2电池的阴极催化剂，导致第一循环中的放电容量（约7088.2mahg（-1））。 此外，与...相比 Ketjenblack Carbon和LCFO NWS。 增强的电化学性能表明，具有rgo纳米片的钙钛矿LCFO NWS的这些杂化复合材料可以是用于阴极氧还原和下一代LiO 2电池阴极的氧进化反应的透视双官能催化剂。

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