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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Fe1-xS/reduced graphene oxide composite as anode material for aqueous rechargeable Ni/Fe batteries
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Fe1-xS/reduced graphene oxide composite as anode material for aqueous rechargeable Ni/Fe batteries

机译：Fe1-xs /氧化石墨烯氧化物复合物作为用于含水可充电Ni / Fe电池的阳极材料

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摘要

Owing to the abundant resources of Ni and Fe elements, aqueous Ni/Fe battery has emerged as an attractive electrochemical energy storage device. However, the performance of the Ni/Fe battery is largely limited by the low specific capacity and poor discharge rate capacity of the Fe electrodes. Herein, we report a new Fe1-xS/reduced graphene oxide composite (Fe1-xS@rGO composite) as anode material for high performance Ni/Fe batteries. In the composite, the highly conductive rGO sheets wrap the Fe1-xS particle sheets, creating a compact sheet-particle interface and thereby greatly improving the conductivity of the anode electrode. Moreover, the Fe1-xS particle sheets of nanosized architectures and the rGO sheets can effectively prevent the crystal unit cell changes and the aggregation/dissolution of the Fe1-xS particle sheets. Consequently, the resultant Fe1-xS@rGO electrode delivers a specific capacity of similar to 320, 282, 270 and 120 mAh g(-1) at a current density of 0.3, 0.6, 1, and 10 A g(-1), respectively, exhibiting high specific capacity and high rate capacity. Moreover, the Fe1-xS@rGO electrode exhibits a long cycling stability, with 83.3% of initial capacity retained after 100 cycles at 1 A g(-1). These results suggest that the Fe1-xS@rGO composite is a promising anode material for practical Ni/Fe battery. (C) 2019 Published by Elsevier B.V.
机译：由于Ni和Fe元素的丰富资源，Ni / Fe电池水溶液作为有吸引力的电化学能量存储装置。然而，Ni / Fe电池的性能主要受到Fe电极的低特定容量和差的放电速率容量的限制。在此，我们将新的Fe1-XS / X型氧化烯氧化物复合物（Fe1-Xs @ Rgo复合材料）作为高性能Ni / Fe电池的阳极材料报告为阳极材料。在复合材料中，高导电RGO片材包裹Fe1-XS颗粒片，形成紧凑的片粒界面，从而大大提高了阳极电极的导电性。此外，纳米型架构和RGO板的Fe1-XS粒子片可以有效地防止晶体单元电池变化和Fe1-XS颗粒片的聚集/溶解。因此，所得Fe1-XS @ Rgo电极以0.3,0.6,1和10Ag（-1）的电流密度，相似的特定容量与320,282,270和120mAhg（-1）相似，分别表现出高特定容量和高速率容量。此外，Fe1-XS @ rgo电极具有长的循环稳定性，8.3.3％的初始容量在100℃下在100℃（-1）下保留。这些结果表明FE1-XS @ RGO复合材料是实用的Ni / Fe电池的有前途的阳极材料。 （c）2019年由elestvier b.v发布。

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