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Title: Coralline-like n-doped hierarchically porous carbon derived from enteromorpha as a host matrix for lithium-sulfur battery
Authors: Ji, S
Imtiaz, S 
Sun, D
Xin, Y
Li, Q
Huang, T
Zhang, Z
Huang, Y
Keywords: Biomass
Hierarchical porous carbon
Lithium-sulfur battery
Issue Date: 2017
Publisher: Wiley-VCH Verlag
Source: Chemistry - a European journal, 2017, v. 23, no. 72, p. 18208-18215 How to cite?
Journal: Chemistry - a European journal 
Abstract: Coralline-like N-doped hierarchically porous carbon (CNHPC) was prepared through a hydrothermal carbonization process using a sea pollutant enteromorpha as the starting material. The addition of a small amount of glucose during carbonization improved the yield of carbon, and the inherent N contents, especially for pyrrolic N and pyridinic N atoms. After loading 40 wt. % sulfur, the CNHPC/S composite, as a cathode in a Li-S battery, exhibited an initial discharge capacity of 1617 mAh g−1 (96.5 % of theoretical capacity) at 0.1 C and a capacity loss of 0.05 % per charge-discharge cycle after 500 cycles at 0.5 C with a stable Coulombic efficiency of 100 % in carbonate based electrolyte. Such a great performance can be attributed to the coralline-like hierarchically porous infrastructure and inherently abundant N doping. Given the conversion of waste pollutants into valuable energy-storage materials and the easy process, this work features a promising approach to prepare C/S cathodes for Li-S batteries. The special structural and textural characteristics of CNHPC might be attractive to other practical applications such as supercapacitors and catalysis.
ISSN: 0947-6539
EISSN: 1521-3765
DOI: 10.1002/chem.201703357
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