Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries
Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries
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豆渣碳材料作为优质锂离子电池负极材料
DOI：
10.1016/j.electacta.2016.10.202
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发表时间：
2016-12-20
影响因子：
6.6
通讯作者：
Chen, Han
中科院分区：
文献类型：
--
作者：
Ru, Haohui;Xiang, Kaixiong;Chen, Han
以豆渣为原料，通过石墨化处理和化学活化，对改性碳的结构进行调控。利用x射线衍射、拉曼光谱仪、扫描电子显微镜和透射电子显微镜等技术对其微观结构和电化学性能进行了研究。采用电化学方法对其电化学性能进行了研究。经2800℃热处理后，得到的BDC-2800石墨化程度高，循环性能优异，在0.1℃下循环100次后，容量从423 mAh g（-1）衰减到396 mAh g（-1）。化学处理的碳也表现出增强的电化学性能，特别是对于koh处理的样品。BDC-K在0.1℃时的比电荷容量为801 mAhg(-1)，在1℃时的倍率容量为643 mAhr g（-1）。此外，在1℃下循环500次后，该样品的容量保持率为94%。这种良好的电化学性能主要归功于其高表面积和丰富的介孔结构。(C) 2016 Elsevier Ltd.版权所有。
The structures of modified carbons from bean dregs were regulated via graphitization treatment and chemical activation. The microstructure and electrochemical performance were studied using X-ray diffraction, Raman spectrometer, SEM and TEM techniques. The electrochemical performance was investigated using electrochemical methods. After heat-treatment at 2800 degrees C, the obtained BDC-2800 possessed a high degree of graphitization and showed an outstanding cycling performance, delivering capacity decay from 423 to 396 mAh g(-1) at 0.1 C after 100 cycles. The chemical-treated carbons also demonstrated enhanced electrochemical performance, especially for the KOH-treated sample. The BDC-K displayed superior specific charge capacity of 801 mAhg(-1) at 0.1 C, and showed an impressive rate capability of 643 mAhr g(-1) at 1 C. In addition, this sample delivered capacity retention of 94% after 500 cycles at 1 C. This good electrochemical performance was mainly due to its high surface area and abundant mesoporous structure. (C) 2016 Elsevier Ltd. All rights reserved.