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Composites of Reduced Graphene Oxide and Fe2O3 Nanoparticles Anchored on MoS2 Nanosheets for Lithium Storage
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-08-31 , DOI: 10.1021/acsanm.0c01709
Wentao Ju 1 , Chunwei Dong 1 , Bo Jin 1 , Yongfu Zhu 1 , Zi Wen 1 , Qing Jiang 1
Affiliation  

Along with the progress of electric vehicles and hybrid electric vehicles, high-performance lithium-ion batteries are needed urgently. Herein, we design and prepare a Fe2O3/MoS2/rGO composite in which the unique three-dimensional heterostructure effectively alleviates the volumetric change during charge/discharge processes and enhances the electronic conductivity of an active material, thus improving the reversible capacity of a battery. Under a low current density (200 mA g–1), Fe2O3/MoS2/rGO delivers a high discharge capacity of 906 mAh g–1 after 100 cycles. Even at a high current density (1000 mA g–1), the discharge capacity reaches 711 mAh g–1 after 500 cycles. In addition, Fe2O3/MoS2/rGO has also a good rate performance (608 mAh g–1 at 1500 mA g–1). The experimental results show that the synthesis of Fe2O3/MoS2/rGO is an effective approach to prepare anode materials that possess the outstanding electrochemical properties for lithium storage.

中文翻译:

还原氧化石墨烯和Fe 2 O 3纳米颗粒的复合材料锚固在MoS 2纳米片上用于锂存储

随着电动汽车和混合动力汽车的发展,迫切需要高性能锂离子电池。本文中,我们设计并制备了Fe 2 O 3 / MoS 2 / rGO复合材料,其中独特的三维异质结构有效地缓解了充电/放电过程中的体积变化并增强了活性材料的电子电导率,从而提高了可逆容量电池。在低电流密度(200 mA g –1)下,Fe 2 O 3 / MoS 2 / rGO经过100个循环后可提供906 mAh g –1的高放电容量。即使在高电流密度(1000 mA g –1),经过500次循环后,放电容量达到711 mAh g –1。此外,铁2 ö 3 / MOS 2 / RGO还具有良好的倍率性能(608毫安克-1在1500毫安克-1)。实验结果表明,Fe 2 O 3 / MoS 2 / rGO的合成是制备具有优异电化学性能的锂存储阳极材料的有效方法。
更新日期:2020-09-25
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