Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, PR China.
Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, PR China.
J Colloid Interface Sci. 2017 Feb 15;488:20-25. doi: 10.1016/j.jcis.2016.10.083. Epub 2016 Oct 28.
In this paper, we descried a simple method to fabricate three-dimensional (3D) composite materials, WS-nanoflowers @ reduced graphene oxide (WS-NF@rGO), in which rGO crossed-link the isolated WS-NF to construct a 3D conductive network and provided protection against the volume changes of WS during electrochemical processes simultaneously. This unique structure of the WS-NF@rGO composite could not only promote both ion and electron diffusion, but also enhance the electrode stability, thus obtaining a high-capacity and long-cycle anode material for lithium-ion batteries. As a result, the WS-NF@rGO exhibited a reversible capacity of 730mAhg after 150 cycles at 100mAg and maintained a capacity of higher than 260mAhg at 2Ag, thus exhibiting great potential as an anode material for lithium storage.
本文描述了一种简单的方法来制备三维（3D）复合材料 WS-纳米花@还原氧化石墨烯（WS-NF@rGO），其中 rGO 交联孤立的 WS-NF 以构建 3D 导电网络，同时保护 WS 在电化学过程中的体积变化。这种 WS-NF@rGO 复合材料的独特结构不仅可以促进离子和电子的扩散，还可以增强电极的稳定性，从而获得高容量和长循环寿命的锂离子电池阳极材料。结果，WS-NF@rGO 在 100mAg 下循环 150 次后表现出 730mAhg 的可逆容量，并且在 2Ag 下保持高于 260mAhg 的容量，因此作为锂离子存储的阳极材料具有很大的潜力。
