Binary graphene-based cathode structure for high-performance lithium-sulfur batteries
Fang,Ruopian1,2; Zhao,Shiyong3; Chen,Ke2,4; Wang,Da-Wei1; Li,Feng2
Source PublicationJournal of Physics: Energy
AbstractAbstract 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.
Keywordgraphene lithium-sulfur batteries high energy denisty
WOS IDIOP:2515-7655-2-1-ab5997
PublisherIOP Publishing
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Document Type期刊论文
Affiliation1.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
Recommended Citation
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).
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