Oxygen Reduction and Evolution in an Ionic Liquid Electrocatalyzed by a Highly Active Au Nanoparticles/Graphene Hybrid

Oxygen Reduction and Evolution in an Ionic Liquid Electrocatalyzed by a Highly Active Au Nanoparticles/Graphene Hybrid
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高活性金纳米颗粒/石墨烯杂化物电催化离子液体中的氧还原和放出

DOI:
10.1002/celc.201600876
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发表时间:
2017-05
期刊:
影响因子:
4
通讯作者:
Ouchi Yukio
Ouchi Yukio
中科院分区:
化学3区
文献类型:
--
作者:
Qiu Xingyuan;Zhou Wei;Qi Chengzi;Cheng Danhong;Ouchi Yukio

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通过使用简便的方法制备了还原氧化石墨烯(RGO)片和金纳米颗粒(AuNP)的混合物,其主要特征为Au(111)平面,平均直径为8 nm。 RGO/AuNPs杂化物对室温离子液体(RTIL)中的氧还原反应(ORR)和析氧反应(OER)表现出高双功能电催化活性。与商用 Pt/C 材料的性能相比,RGO/AuNPs 获得了更高的 ORR 电流密度以及更好的 ORR/OER 可逆性,这表明这种新型混合材料可以用作开发基于 IL 的可充电金属空气电池的有前景的催化剂。
A hybrid of reduced graphene oxide (RGO) sheets and gold nanoparticles (AuNPs), which mainly feature Au(111) planes and have an average diameter of 8 nm, has been prepared by using a facile approach. The RGO/AuNPs hybrid exhibits high bifunctional electrocatalytic activity toward the oxygen reduction reaction (ORR) as well as the oxygen evolution reaction (OER) in room‐temperature ionic liquid (RTIL). Compared with the performance of a commercial Pt/C material, a higher ORR current density as well as a much better reversibility of ORR/OER has been obtained on RGO/AuNPs, suggesting that this novel hybrid material could be employed as a promising catalyst for the development of IL‐based rechargeable metal−air batteries.
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