期刊
SCIENTIFIC REPORTS
卷 3, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep01119
关键词
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资金
- NNSFC [51173213, 51172290, 51232005, 50802116]
- Program for New Century Excellent Talents in University
- Program for Pearl River New Star of Science and Technology in Guangzhou
- Fundamental Research Funds for the Central Universities [09lgpy18]
- Project of Demonstration Base of Department of Education of Guangdong Province [cgzhzd0901]
Electrospinning offers a powerful route for building one-dimensional (1D) micro/nanostructures, but a common requirement for toxic or corrosive organic solvents during the preparation of precursor solution has limited their large scale synthesis and broad applications. Here we report a facile and low-cost way to prepare 1D porous carbon microfibers by using an electrospun fiber-like natural product, i.e., silk cocoon, as precursor. We surprisingly found that by utilizing a simple carbonization treatment, the cocoon microfiber can be directly transformed into 1D carbon microfiber of ca. 6 mu m diameter with a unique three-dimensional porous network structure composed of interconnected carbon nanoparticles of 10 similar to 40 nm diameter. We further showed that the as-prepared carbon product presents superior electrochemical performance as binder-free electrodes of supercapacitors and good adsorption property toward organic vapor.
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