Dhawa, Tanumoy and Chattopadhyay, Shreyasi and De, Goutam and Mahanty, Sourindra (2019) Carbon@carbon double hollow spheres as efficient cathode host for high rate Li-S battery. Materials Chemistry and Physics, 225. pp. 309-315. ISSN 0254-0584

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Abstract

Development of carbon materials for lithium-sulfur (Li-S) battery that can confine the sulfur species effectively while serving as a conductive matrix for high rate performance has attracted intense research interest. Herein, we report designing of a double hollow spherical carbon (C@C) by using RF resin coated SiO2 as an exo-template. The developed C@C/S cathode could host about 69.1 wt% of S and exhibits a high specific capacity of 1396 mAh g(-1) at 0.05 C corresponding to 83.5% of S utilization. Furthermore, the cathode could sustain a current rate of 5 C (8.4 A g(-1)) and still delivers a reasonable capacity of 320 mAh g(-1) with excellent electrochemical stability at this high rate with no apparent capacity fading for 100 cycles. The present results highlight the importance of morphological pre-design for developing advanced carbon materials as Li-S cathode host.

Item Type:	Article
Subjects:	Electronics
Divisions:	Nano-Structured Materials
Depositing User:	Bidhan Chaudhuri
Date Deposited:	14 Nov 2019 07:04
Last Modified:	14 Nov 2019 07:04
URI:	http://cgcri.csircentral.net/id/eprint/4591

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