...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of power sources >Preparation and supercapacitive behaviors of the ordered mesoporous/microporous chromium carbide-derived carbons
【24h】

Preparation and supercapacitive behaviors of the ordered mesoporous/microporous chromium carbide-derived carbons

机译：有序介孔/微孔碳化铬衍生碳的制备及超电容行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of ordered mesoporous/microporous carbon materials derived from chromium carbide-derived carbons (CDCs) are prepared by nanocasting the chromic acetate and furfuryl alcohol precursor into SBA-15 and subsequent chlorination. The structure and morphology of the CDCs are characterized by N_2 adsorption/desorption isotherm, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that all of the synthesized CDCs present large specific surface area and pore volume. Especially, the CDCs-2 prepared at the mass ratio of 1/1 (chromic acetate/furfuryl alcohol) exhibits the chain-like morphology with high surface area (1236 m~2 g~(-1)), large pore volume (0.76 cm~3 g~1), and the good mesopore size centered at 3.43 nm. The electrochemical properties of all the CDCs are studied by cyclic voltammetry, constant current charge/discharge, electrochemical impedance spectroscopy and cycle life measurements in 6 M KOH electrolyte. The results display that the sample CDCs-2 exhibits a high capacitance of 242.7 F g~(-1) at the current density of 1 A g~(-1) and good cycling stability with coulombic efficiency of 100% over 10000 cycles.
机译：通过将乙酸铬和糠醇铬前体纳米浇铸到SBA-15中，然后进行氯化，可以制备出一系列源自碳化铬衍生碳（CDC）的有序介孔/微孔碳材料。 CDC的结构和形态以N_2吸附/解吸等温线，扫描电子显微镜（SEM）和透射电子显微镜（TEM）为特征。结果表明，所有合成的CDC都具有较大的比表面积和孔体积。特别地，以1/1（乙酸铬/糠醇铬）的质量比制备的CDCs-2具有链状形态，具有高表面积（1236 m〜2 g〜（-1）），大孔容（0.76）。 cm〜3 g〜1），良好的中孔尺寸集中在3.43 nm。在6 M KOH电解质中，通过循环伏安法，恒流充电/放电，电化学阻抗谱和循环寿命测量研究了所有CDC的电化学性质。结果表明，样品CDCs-2在1 A g〜（-1）的电流密度下表现出242.7 F g〜（-1）的高电容，在10000次循环中库仑效率达到100％时具有良好的循环稳定性。

著录项

  • 来源
    《Journal of power sources》 |2014年第10期|818-824|共7页
  • 作者

    Chun Wu; Jiao Gao; Qinglan Zhao; Youwei Zhang; Yansong Bai; Xingyan Wang; Xianyou Wang;

  • 作者单位

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion, School of Chemistry, Xiangtan University, Hunan, Xiangtan 411105, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ordered mesoporous/microporous carbon; Chain-like morphology; Supercapacitive performances; Supercapacitor;

    机译：有序中孔/微孔碳;链状形态;超电容性能;超级电容器;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号