Preparation of activated carbon from bamboo-cellulose fiber and its use for EDLC electrode material
Preparation of activated carbon from bamboo-cellulose fiber and its use for EDLC electrode material
复制标题
DOI：
10.1016/j.jece.2017.03.011
复制
发表时间：
2017-04-01
影响因子：
7.7
通讯作者：
Takeuchi, Kenji
中科院分区：
文献类型：
--
作者：
Fujishige, Masatsugu;Yoshida, Ichiro;Takeuchi, Kenji
对竹纤维素纤维进行碳化和后活化。碳化在氩气氛中在600℃、800℃和1000℃下进行。然后，通过在氩气气氛中将碳化竹和氢氧化钠（NaOH）的固体混合物在720摄氏度下加热来激活它们。所得活性炭(600℃碳化)的最大比表面积为2366m(2)/g，微孔体积为0.71cm(3)/g，中孔体积为0.06cm(3)/g。研究发现，碳化温度对于获得大比表面积的纳米多孔碳非常重要。根据碳化样品的 TEM 图像的功率谱估计层间距的分布。结果表明，基本结构单元（BSU）的层间距从0.49 nm（BC-0600）经0.47 nm（BC-0800）减小到0.45 nm（BC-1000）。采用活性炭作为有机电解质硬币型双电层电容器（EDLC）电极的主体材料。所观察到的活性炭（在 600 摄氏度下碳化）的比电容为 43 F/g (23 F/cm(3))，与商用活性炭 (MSP) 的 44 F/g (22 F/cm(3)) 相当。活性炭（在 800 摄氏度和 1000 摄氏度碳化）的相应值分别为 40 F/g (23 F/cm(3)) 和 17 F/g (12 F/cm(3))。 (C) 2017 Elsevier Ltd. 保留所有权利。
Carbonization and post activation of bamboo-cellulose fiber was carried out. The carbonization was performed at 600 degrees C, 800 degrees C and 1000 degrees C in argon atmosphere. Then, they were activated by heating solid mixture of carbonized bamboo and sodium hydroxide (NaOH) at 720 degrees C in argon atmosphere. The largest specific surface area of the resulting activated carbon (carbonized at 600 degrees C) was 2366 m(2)/g with the micropore volume of 0.71 cm(3)/g and mesopore volume of 0.06 cm(3)/g. It was found that the carbonization temperature is very important to obtain nanoporous carbon with large specific surface area. The distributions of interlayer spacing were estimated from the power spectra of the TEM images of the carbonized samples. It showed the interlayer spacing of basic structural unit (BSU) decreased from 0.49 nm (BC-0600) through 0.47 nm (BC-0800) to 0.45 nm (BC-1000). The activated carbon was used as the host material of the electrodes of coin type electric double-layer capacitor (EDLC) with organic electrolyte. The observed specific capacitance was 43 F/g (23 F/cm(3))for the activated carbon (carbonized at 600 degrees C), comparable to 44 F/g (22 F/cm(3)) of commercial activated carbon (MSP). The corresponding values for the activated carbons (carbonized at 800 degrees C and 1000 degrees C) were 40 F/g (23 F/cm(3)) and 17 F/g (12 F/cm(3)), respectively. (C) 2017 Elsevier Ltd. All rights reserved.