Binary graphene-based cathode structure for high-performance lithium-sulfur batteries

doi:10.1088/2515-7655/ab5997

IMR OpenIR

	Binary graphene-based cathode structure for high-performance lithium-sulfur batteries
	Fang,Ruopian 1,2; Zhao,Shiyong 3; Chen,Ke 2,4; Wang,Da-Wei 1; Li,Feng 2
	2020
发表期刊	Journal of Physics: Energy
卷号	2 期号:1
摘要	Abstract Lithium-sulfur (Li-S) batteries are highly appealing for the next-generation of energy storage because of their high energy density and low-cost features. However, the practical implementation of Li-S batteries has been hindered by fast performance degradation of the sulfur cathode, especially at a high cathode loading. Here, we propose a strategic design of binary graphene foam (BGF) as the cathode scaffold, with the incorporation of nitrogen-doped graphene and highly porous graphene. The nitrogen-doped graphene provides chemical adsorption sites for migrating polysulfides, and the highly porous graphene could increase the cathode conductivity and accelerate lithium ion transport. The freestanding foam-like cathode structure further offers a robust, interconnected, conductive framework to promote the redox reaction even at a high cathode loading. Therefore, the Li-S battery with the S/BGF electrode exhibits a high specific areal capacity over 10 mAh cm–2 and good cycling stability over 300 cycles. This approach offers insights into multifunctional electrode structure design, with targeted functions for high-performance Li-S batteries.
关键词	graphene lithium-sulfur batteries high energy denisty
DOI	10.1088/2515-7655/ab5997
语种	英语
WOS记录号	IOP:2515-7655-2-1-ab5997
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80642
专题	中国科学院金属研究所
作者单位	1.School of Chemical Engineering, The University of New South Wales, Sydney, 2052, Australia 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, Liaoning 110016, People’s Republic of China 3.Department of Chemical Engineering & Fuels and Energy Technology Institute, Curtin University, Perth, Western Australia 6102, Australia 4.School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, People’s Republic of China
推荐引用方式 GB/T 7714	Fang,Ruopian,Zhao,Shiyong,Chen,Ke,et al. Binary graphene-based cathode structure for high-performance lithium-sulfur batteries[J]. Journal of Physics: Energy,2020,2(1).
APA	Fang,Ruopian,Zhao,Shiyong,Chen,Ke,Wang,Da-Wei,&Li,Feng.(2020).Binary graphene-based cathode structure for high-performance lithium-sulfur batteries.Journal of Physics: Energy,2(1).
MLA	Fang,Ruopian,et al."Binary graphene-based cathode structure for high-performance lithium-sulfur batteries".Journal of Physics: Energy 2.1(2020).