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HomeAdvanced Engineering ForumAdvanced Engineering Forum Vol. 44Characterization of Sulfur/Graphitized Mesocarbon...

Characterization of Sulfur/Graphitized Mesocarbon Microbeads Composite Cathodes for Li-S Batteries

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Abstract:

Cathode optimization is vital for improving the performance of Li-S batteries. Various carbon materials with special morphologies have been proposed and verified to form optimized sulfur/carbon (S/C) cathodes owning high cycling and rate performances. However, the high cost and complexity of material preparation processes hinder their commercialization. Herein, graphitized mesocarbon microbeads (g-MCMB) were used to form sulfur/carbon cathodes for Li-S battery. By simply dry-mixing sulfur powder with g-MCMB, S/g-MCMB cathodes were formed and characterized by galvanostatic charge-discharge tests, electrochemical impedance spectroscopy and scanning electron microscopy. Compared with S/C cathodes using acetylene black, S/g-MCMB cathodes show better cycling performance, but worse rate performance, which can be attributed to the size and morphologies of g-MCMB particles.

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Advanced Engineering Forum Vol. 44

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Periodical:

Advanced Engineering Forum (Volume 44)

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87-94

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https://doi.org/10.4028/www.scientific.net/AEF.44.87

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Online since:

January 2022

Authors:

Yong Gang Xu*, Xiang Yu Yan, Jing Xiang, Han Wen Ou, Wen Yao Yang

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Cathode Optimization, Graphitized Mesocarbon Microbeads, Li-S Batteries

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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