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首页> 外文期刊>International Journal of Electrochemical Science >Cerium Oxides as Oxygen Reduction Catalysts for Lithium-Air Batteries
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Cerium Oxides as Oxygen Reduction Catalysts for Lithium-Air Batteries

机译：氧化铈作为锂空气电池的减氧催化剂

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In this work, CeO2 of different morphologies were fabricated and used as the cathode catalysts foroxygen reduction reaction (ORR) of lithium-air batteries. Due to its easy shift between reduced andoxidized states, the discharge potential of lithium-air battery using CeO2 as the cathode catalyst is-2 nearly 0.1 V higher than that of the cathodes without a catalyst at the current density of 0.05 mA cm .-1 Simultaneously, it shows a higher capacity of 2128 mAh g . The morphologies effect on thedischarging performance is further investigated. CeO2 nano-particles (NP-CeO2) with a high surface2 -1 area of 63.1 m g exhibits the superior capacity. Not only surface area but also crystal structure ofcerium oxides play a great role on their electro-catalytic performance in lithium-air batteries.
机译：在这项工作中，制备了不同形态的CeO2，并将其用作锂空气电池的氧还原反应（ORR）的阴极催化剂。由于其在还原态和氧化态之间的容易转换，使用CeO2作为阴极催化剂的锂空气电池的放电电势比无催化剂的阴极在电流密度为0.05 mA cm .-1时的放电电势高2到近0.1V。同时，它显示出2128 mAh g的更高容量。进一步研究了形态对放电性能的影响。具有高表面2 -1面积为63.1 m g的CeO2纳米颗粒（NP-CeO2）表现出优异的容量。在锂空气电池中，不仅氧化铈的表面积而且其氧化物的晶体结构都对其电催化性能起着重要作用。

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