期刊
RSC ADVANCES
卷 6, 期 108, 页码 106625-106630出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra24443b
关键词
-
资金
- Beijing Science and Technology Project [D151100003015002]
- National Key Research and Development Program of China [2016YFB0100200]
Sulfurized polyacrylonitrile (S@pPAN) composites have been synthesized in a high pressure reactor under certain vapor pressure. According to elemental analysis, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), the hydrogen content and the degree of graphitization in S@pPAN composites decreases with increasing synthesis vapor pressure, indicating that a suitably high vapor pressure is helpful in promoting the reaction between polyacrylonitrile and elemental sulfur and finally making the conductive molecular structure of sulfurized polyacrylonitrile more complete. The results show that the sulfurized polyacrylonitrile composite prepared under 5 MPa vapor pressure (S@pPAN-5) delivers a high initial discharge specific capacity of 1821 mA h g(-1) and the capacity remains at 1357 mA h g(-1) (616.8 mA h g(composite)(-1)) after 100 cycles with a retention rate of 88% calculated from the 2nd discharge capacity.
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