纳米纤维矿物纤蛇纹石为模板合成多孔炭及其在超级电容器中的应用

曹曦; 传秀云; 李爱军; 黄杜斌

纳米纤维矿物纤蛇纹石为模板合成多孔炭及其在超级电容器中的应用

1.
北京大学化学与分子工程学院, 北京 100871;
2.
北京大学地球与空间科学学院, 北京 100871

基金项目: 国家自然科学基金（51774016）；中国博士后科学基金（2017M610017）.

详细信息

作者简介:
传秀云,教授.E-mail:xychuan@pku.edu.cn

通讯作者:
曹曦,博士,博士后.E-mail:xicaochem@pku.edu.cn

中图分类号: TQ127.1⁺1
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- 文章访问数: 450
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- 被引次数: 0
出版历程
- 收稿日期: 2018-02-27
- 录用日期: 2018-06-26
- 修回日期: 2018-05-30
- 刊出日期: 2018-06-28

Preparation of porous carbons using a chrysotile template and their electrochemical performance as supercapacitor electrodes

1.
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
2.
School of Earth and Space Sciences, Peking University, Beijing 100871, China

Funds: National Natural Science Foundation of China (51774016); China Postdoctoral Science Foundation Funded Project (2017M610017).

摘要

摘要: 以天然纳米纤维矿物纤蛇纹石为模板，蔗糖为碳源，合成了具有一维管状形貌的多级孔结构炭材料。通过调控模板与碳源的比例，可以改变炭材料的孔结构分布和比表面积。当纤蛇纹石与蔗糖的质量比为1∶3.0时，模板炭的中大孔比例较高，达到87%，作为双电层电容器（EDLC）储能材料的电化学性能最佳，比电容最大：在6 M KOH三电极条件下，0.5 A/g电流密度条件时容量可达150 F/g，在20 A/g时，比电容仍能保持75%。以10 A/g电流密度循环10 000次，比电容没有明显损失，仍达到119 F/g。
- 多孔炭 /
- 模板法 /
- 纤蛇纹石 /
- 电化学性能
Abstract: Porous carbons were prepared by the template method using chrysotile as the template and sucrose as the carbon precursor. The effect of the weight ratio of the template to the carbon precursor on the porosity and electrochemical performance of the porous carbons was investigated. Results indicate that the pore size distributions and specific surface areas of the porous carbons are changed by the ratio. The porous carbon prepared at a ratio of 1:3 exhibits the highest specific capacitance at different current densities, and best rate capability and cycling stability, which are ascribed to its highest surface area, highest percentage of meso-and macropore volume and its hierarchical porous structure.
- Hierarchically porous carbon /
- Template method /
- Chrysotile /
- Electrochemical performance

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