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ZnFe 2 O 4 /MoS 2 /rGO composite as an anode for rechargeable Lithium-ion batteries
Journal of Electroanalytical Chemistry ( IF 4.5 ) Pub Date : 2018-08-01 , DOI: 10.1016/j.jelechem.2018.06.041
Lixue Jiang , Wang Gao , Bo Jin , Huan Li , Shanshan Li , Guoren Zhu , Qing Jiang

Abstract The transition metal oxide ZnFe2O4 can be used as a promising anode material for lithium-ion batteries because of its higher theoretical capacity (1072 mA h g−1), and MoS2 has also received extensive attention because of its low cost and environmental friendliness. However, the expansion and contraction of the volume during charge and discharge limit the commercial application of ZnFe2O4 and MoS2. We synthesize ZnFe2O4/MoS2/reduced graphite oxide (ZnFe2O4/MoS2/rGO) ternary composite material by a simple two-step hydrothermal synthesis method and subsequent heat treatment. ZnFe2O4/MoS2/rGO displays a good electrochemical performance due to a synergistic effect of MoS2 with a three-dimensional spherical structure and rGO as a conductive agent. At a current density of 200 mA g−1, the discharge capacity still reaches 1568 mAh g−1 after 100 cycles. At the same time, high-rate performance is also good (638 mAh g−1 at 1800 mA g−1).

中文翻译:

ZnFe 2 O 4 /MoS 2 /rGO复合材料作为可充电锂离子电池的负极

摘要 过渡金属氧化物 ZnFe2O4 具有较高的理论容量(1072 mA h g-1),可作为一种很有前景的锂离子电池负极材料,而 MoS2 也因其低成本和环境友好而受到广泛关注。然而,充放电过程中体积的膨胀和收缩限制了ZnFe2O4和MoS2的商业应用。我们通过简单的两步水热合成方法和后续热处理合成了 ZnFe2O4/MoS2/还原氧化石墨(ZnFe2O4/MoS2/rGO)三元复合材料。由于具有三维球形结构的 MoS2 和作为导电剂的 rGO 的协同作用,ZnFe2O4/MoS2/rGO 显示出良好的电化学性能。在 200 mA g−1 的电流密度下,100 次循环后放电容量仍达到 1568 mAh g-1。同时,高倍率性能也很好(638 mAh g-1 at 1800 mA g-1)。
更新日期:2018-08-01
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