花瓣状纳米硫和球状纳米硫的制备及性能

doi:10.11896/cldb. 21080095

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Abstract Lithium-sulfur batteries are considered as the most promising new generation of energy storage devices because of high energy density and environmental friendliness. However, the problems of polysulfide shuttle effect and volume expansion are the current challenges for Li-S batteries. In this work, nano-sulfur with different morphology and stable regular structure were prepared by chemical synthesis method. The aim of this work is to provide more active sites for batteries in the process of charge and discharge, to reduce the loss of active substances in the positive electrode effectively, to improve the electrochemical performance of batteries. The results showed that the flower-S exhibited an initial capacity of 740.72 mAh/g after 100 cycles at 0.1C and capacity remained at 362.07 mAh/g. The sphere-S exhibited an initial capacity of 825.30 mAh/g after 100 cycles at 0.1C and capacity remained at 418.06 mAh/g, the capacity attenuation rate was only 0.493% per cycle.

Key words： lithium-sulfur battery cathode material flower-S sphere-S discharge specific capacity

Published: 10 March 2023 Online: 2023-03-14

CLC number:

TM912

Fund:National Natural Science Foundation of China (51201121), Shaanxi International Science and Technology Cooperation Exchange Program(2016KW-055), Shaanxi Province Key R & D Program Key Industry Innovation Chain (Group) Project (2019ZDLGY04-04),and Shanxi Province Science and Technology Major Special Project (20191102006).

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	Articles by authors
	CUI Chunjuan
	ZHAO Yanan
	LIU Yue
	WU Chongyang
	ZHANG Kai
	WANG Yan
	WEI Jian

Cite this article:

CUI Chunjuan,ZHAO Yanan,LIU Yue, et al. Preparation and Properties of Petal-shaped Nano-sulfur and Spherical Nano-sulfur[J]. Materials Reports, 2023, 37(5): 21080095-11.

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http://www.mater-rep.com/EN/10.11896/cldb. 21080095 OR http://www.mater-rep.com/EN/Y2023/V37/I5/21080095

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