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Zhang S, Ao X, Huang J, Wei B, Zhai Y, Zhai D, Deng W, Su C, Wang D, Li Y. Isolated Single-Atom Ni-N 5 Catalytic Site in Hollow Porous Carbon Capsules for Efficient Lithium-Sulfur Batteries. Nano Lett 2021; 21:9691-9698. [PMID: 34748344 DOI: 10.1021/acs.nanolett.1c03499] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lithium-sulfur (Li-S) batteries suffer from multiple complex and often interwoven issues, such as the low electronic conductivity of sulfur and Li2S/Li2S2, shuttle effect, and sluggish electrochemical kinetics of lithium polysulfides (LiPSs). Guided by theoretical calculations, a multifunctional catalyst of isolated single-atom nickel in an optimal Ni-N5 active moiety incorporated in hollow nitrogen-doped porous carbon (Ni-N5/HNPC) is constructed and acts as an ideal host for a sulfur cathode. The host improved electrical conductivity, enhanced physical-chemical dual restricting capability toward LiPSs, and, more importantly, boosted the redox reaction kinetics by the Ni-N5 active moiety. Therefore, the Ni-N5/HNPC/S cathode exhibits superior rate performance, long-term cycling stability, and good areal capacity at high sulfur loading. This work highlights the important role of the coordination number of active centers in single-atom catalysts and provides a strategy to design a hollow nanoarchitecture with single-atom active sites for high-performance Li-S batteries.
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Affiliation(s)
- Shaolong Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Xin Ao
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
| | - Jing Huang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, P. R. China
| | - Bin Wei
- Department of Quantum and Energy Materials, International Iberian Nanotechnology Laboratory, Braga 4715-330, Portugal
| | - Yanliang Zhai
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang 163318, P. R. China
| | - Dong Zhai
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Weiqiao Deng
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Chenliang Su
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, P. R. China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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