Tailorable Negative Permittivity of Carbon Materials Derived from Microcrystalline Cellulose at Different Carbonizing Temperature
Tailorable Negative Permittivity of Carbon Materials Derived from Microcrystalline Cellulose at Different Carbonizing Temperature
复制标题
微晶纤维素碳材料在不同碳化温度下可定制的负介电常数
DOI：
10.1149/2162-8777/abb4a3
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发表时间：
2020-09
影响因子：
2.2
通讯作者：
Liu Yao
中科院分区：
文献类型：
--
作者：
Wang Yingjie;Ren Huan;Cheng Chuanbing;Xu Ciqun;Fan Guohua;Liu Yao
在这项工作中，研究了不同碳化温度下微晶纤维素前体衍生的碳材料的电导率、介电常数行为和微观结构。通过形成的自建碳渗透网络观察到电渗透。实现了类等离子体负介电常数特性，该特性由德鲁德模型很好地描述了，这是由自构建碳网络中自由电子的等离子体振荡产生的。同时，负介电常数的大小和离散度与碳化温度密切相关。这项工作为利用碳材料获得可调负介电常数特性提供了一种便捷的方法，这在储能电容器和电磁屏蔽应用中具有巨大的潜力。
In this work, electrical conductivity, permittivity behavior and microstructure of carbon materials derived from microcrystalline cellulose precursor at different carbonization temperature were investigated. Electrical percolation was observed with the self-constructed carbon percolative network formed. Plasma-like negative permittivity property was realized, which was well described by Drude model, resulting from the plasma oscillations of free electrons in self-constructed carbon networks. Meanwhile, magnitude and dispersion of the negative permittivity were closely associated with the carbonization temperature. This work provided a convenient way to obtain tunable negative permittivity properties with carbon materials, which have great potential in energy-storage capacitor and electromagnetic shielding applications.
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影响因子：
4.1
作者：
H. Bardeleben;J. Cantin;K. Zellama;A. Zeinert
通讯作者：
H. Bardeleben;J. Cantin;K. Zellama;A. Zeinert
影响因子：
10.9
作者：
Hiroyuki Sugimoto;M. Norimoto
通讯作者：
Hiroyuki Sugimoto;M. Norimoto
通过精确控制微观结构，实现银/二氧化硅随机超材料的双负特性
影响因子：
11
作者：
Xie, Peitao;Zhang, Zidong;Fan, Runhua
通讯作者：
Fan, Runhua
柔性石墨烯/PDMS超复合材料中可调谐负介电常数
影响因子：
3.7
作者：
Sun, Kai;Dong, Jiannan;Guo, Zhanhu
通讯作者：
Guo, Zhanhu
影响因子：
--
作者：
PINES, D;BOHM, D
通讯作者：
BOHM, D