Institute of Metal Research, CAS
Design graphene materials for advanced lithium sulfur batteries
Li Feng, Fang Ruopian, Zhou Guangmin, and Cheng Hui-Ming
Shenyang National Laboratory for Materials Science
, Institute of Metal Research, Chinese Academy of Sciences
Wenhua Road, Shenyang 110016, PR China.
Lithium-sulfur (Li-S) batteries have attracted great interest as potential energy storage devices for electrical vehicles and other applications needing large-scale electricity storage because of their high theoretical energy density of 2567 W h kg−1, which is more than five times that of state-of-the-art lithium ion batteries based on conventional insertion compound cathodes. Other advantages are that elemental sulfur is low cost, has low toxicity and is an abundant resource. However, the practical application of Li-S batteries is greatly hampered by high solubility of the reaction polysulfide products and the low electrical conductivity of sulfur. Graphene materials play a key role in this field, which can use the electrode materials, conductive networks, coating layers and its hybrid materials. In this study, we reported that we designed and combined sulfur/graphene cathode materials with high sulfur loading and content. The results obtained lay insight for the design and development of high-capacity, high-power, long-life and high-energy lithium-sulfur batteries. We also proposed the new design of graphene/sulfur cathode (sandwich structure, integrated structure and flexible structure and three dimensional structure).
1. G.M. Zhou, et al, Fibrous hybrid of graphene and sulfur nanocrystals for high-performance lithium-sulfur batteries, ACS Nano 7(6): 5367-5375 (2013).
2. Z.H. Sun, et al, Highly conductive porous vn nanoribbon/graphene composite as chemical anchor of polysulfides for high-energy Li-S batteries, Nature Communication 8: 14627 (2017)
3. L. Li, et al, Stabilizing sulfur cathodes using nitrogen-doped graphene as a chemical immobilizer for Li-S batteries, Carbon 108: 120-126 (2016)
4. L-C. Yin, et al, Understanding the interactions between lithium polysulfides and N-doped graphene using density functional theory calculations, Nano Energy 25: 203-210 (2016)
5. RP Fang, et al, Towards more reliable lithium-sulfur batteries: an all-graphene cathode structure, ACS Nano 10(9): 8676-8682 (2016)
6. G.M. Zhou, et al, A graphene foam electrode with high sulfur loading for flexible and high energy Li-S batteries, Nano Energy 11: 356-365 (2015).
7. G.J. Hu, et al, 3D graphene-foam reduced- graphene- oxide hybrid nested hierarchical networks for high-performance Li-S batteries, Advanced Materials 28(8):1603-1609 (2016)
8. G.M. Zhou, et al, A flexible integrated electrode for advanced Li-S batteries, Advanced Materials 27 (4), 641-647 (2015).
9. G.M. Zhou, et al, A graphene-pure-sulfur sandwich structure for ultrafast, long-life lithium-sulfur batteries, Advanced Materials 26(4): 625-631 (2014).
Feng LI is a professor of the Institute of Metal Research, Chinese Academy of Sciences (IMR, CAS). He received his Ph.D. in materials science at IMR, CAS in 2001 supervised by Prof. Hui-Ming Cheng. He mainly works on the novel carbon based materials for lithium ion batteries, lithium sulfur battery, supercapacitors and new devices. He has published about 200 papers on peer-reviewed journals such as Energy & Environmental Science, Adv. Mater., Nano Energy., ACS Nano, etc with more 15000 citations and H-index about 55. He was named in the list of Thomson Reuters’ Highly Cited Researchers in the category of Materials Science in 2016.