Three-dimensional carbon framework as a promising anode material for high performance sodium ion storage devices
Three-dimensional carbon framework as a promising anode material for high performance sodium ion storage devices
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DOI：
10.1016/j.cej.2018.07.150
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发表时间：
2018-12
影响因子：
15.1
通讯作者：
Peiyu Wang;Bingjun Yang;Guoheng Zhang;Li Zhang;H. Jiao;Jiangtao Chen;Xingbin Yan
中科院分区：
文献类型：
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作者：
Peiyu Wang;Bingjun Yang;Guoheng Zhang;Li Zhang;H. Jiao;Jiangtao Chen;Xingbin Yan
本文介绍了一种用于钠离子电池（SIB）和混合电容器（SIHC）的三维碳骨架（3DCF）负极材料的制备方法。以乙醇/氢氧化钠为电解质，采用电解结合煅烧工艺制备了3DCF。所得到的3DCF具有独特的结构，具有互连的多孔结构和缺陷特征，这有利于钠离子的存储。当用作SIB的阳极材料时，3DCF显示出高的比容量和倍率性能，以及优异的长期循环性能。以海藻酸钠活性炭（SDAC）为阴极，以3DCF为阳极组装了SIHC器件，在0 ~ 4.0V的电压窗口内，最佳的3DCF//SDAC器件具有133.2Wh kg− 1的高能量密度和20.0kW kg− 1的高功率输出，以及4000次循环的长期循环寿命。这一工作为制备新型纳米结构电极材料和构建高性能钠离子存储器件提供了机会。
This paper presents a way to prepare three-dimensional carbon framework (3DCF) anode material for sodium ion batteries (SIBs) and hybrid capacitors (SIHCs). Based on ethanol/sodium hydroxide electrolyte, 3DCFs are synthesized by electrolysis combined with subsequent calcination process. The obtained 3DCFs have the unique structure with interconnected, porous structure and defective features, which facilitates the sodium ion storage. When used as anode material for SIBs, 3DCFs display high specific capacity and rate capability, and excellent long-term cyclability. We have also assembled the SIHC devices by employing the 3DCFs as anode and sodium alginate derived activated carbon (SDAC) as cathode, the optimal 3DCFs//SDAC devices display high energy density of 133.2 Wh kg−1and high power output of 20.0 kW kg−1within the voltage window of 0–4.0 V, as well as long-term cycling life for 4000 cycles. This work provides opens up opportunities for fabricating novel nano-structured electrode material and constructing high performance sodium ion storage devices.