Synthesis and electrochemical performance of sulfur-carbon composite cathode for lithium-sulfur batteries.

Autor:	Li, Lan, Li, Long-Yan, Guo, Xiao-Dong, Zhong, Ben-He, Chen, Yan-Xiao, Tang, Yan
Předmět:	CARBON ENERGY density NANOSTRUCTURED materials CALCIUM carbonate X-ray diffraction CYCLIC voltammetry
Zdroj:	Journal of Solid State Electrochemistry; Jan2013, Vol. 17 Issue 1, p115-119, 5p
Abstrakt:	In this paper, porous carbon was synthesized by an activation method, with phenolic resin as carbon source and nanometer calcium carbonate as activating agent. Sulfur-porous carbon composite material was prepared by thermally treating a mixture of sublimed sulfur and porous carbon. Morphology and electrochemical performance of the carbon and sulfur-carbon composite cathode were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectra (EIS), and galvanostatic charge-discharge test. The composite containing 39 wt.% sulfur obtained an initial discharge capacity of about 1,130 mA h g under the current density of 80 mA g and presented a long electrochemical stability up to 100 cycles. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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