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Dong X, Zhu T, Liu G, Chen J, Li H, Sun J, Gu X, Zhang S. Brominated flame retardants coated separators for high-safety lithium-sulfur batteries. J Colloid Interface Sci 2023; 643:223-231. [PMID: 37060698 DOI: 10.1016/j.jcis.2023.03.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/13/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023]
Abstract
Lithium-sulfur batteries (LSBs) have become highly promising next-generation secondary lithium batteries owing to their high theoretical energy density and abundance of sulfur. Nevertheless, the large-scale application of LSBs is still restricted by the shuttle effect of lithium polysulfide (LiPSs) and the potential fire hazard caused by flammable electrolytes. Herein, three electrolyte-insoluble brominated flame retardants (BFRs) are selected and coated on both sides of commercial polypropylene separators by a facile slurry coating method. The effects of the three BFRs on the safety and electrochemical properties of LSBs are characterized and compared. The coating modification separators greatly improves the flame retardancy of LSBs through radical elimination mechanism. The self-extinguishing time of the electrolyte is reduced from 0.66 s/mg to 0.20 s/mg. Moreover, it is demonstrated that the oxygen (O)-containing BFRs exert a significant adsorption capacity and are more advantageous than O-free BFRs in LSBs. In addition, octabromoether (BDDP) coated separator is more effective in trapping LiPSs than decabromodiphenyl ether (DBDPO) due to higher O content, which can mitigate the shuttle effect and enhance the cycle and rate performance of LSBs. This simple coating strategy for separators with BFRs offers a strongly competitive option for the large-scale production of high-safety LSBs.
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Affiliation(s)
- Xinxin Dong
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Tao Zhu
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Guoqing Liu
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jinxuan Chen
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Hongfei Li
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jun Sun
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xiaoyu Gu
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Sheng Zhang
- State Key Laboratory of Organic-Inorganic Composites, Center for Fire Safety Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
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Pu J, Wang T, Zhu X, Tan Y, Gao L, Chen J, Huang J, Wang Z. Multifunctional Ni/NiO heterostructure nanoparticles doped carbon nanorods modified separator for enhancing Li–S battery performance. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Gu J, Zhang J, Su Y, Yu X. Aramid Fibers Modulated Polyethylene Separator as Efficient Polysulfide Barrier for High-Performance Lithium-Sulfur Batteries. Nanomaterials 2022; 12:2513. [PMID: 35893481 PMCID: PMC9332304 DOI: 10.3390/nano12152513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 02/05/2023]
Abstract
The separators with high absorbability of polysulfides are essential for improving the electrochemical performance of lithium–sulfur (Li–S) batteries. Herein, the aramid fibers coated polyethylene (AF-PE) films are designed by roller coating, the high polarity of AFs can strongly increase the binding force at AF/PE interfaces to guarantee the good stability of the hybrid film. As confirmed by the microscopic analysis, the AF-PE-6 film with the nanoporous structure exhibits the highest air permeability by the optimal coating content of AFs. The high absorbability of polysulfides for AF-PE-6 film can effectively hinder the migration of polysulfides and alleviate the shuttle effect of the Li–S battery. AF-PE-6 cell shows the specific capacity of 661 mAh g−1 at 0.1 C. After 200 charge/discharge cycles, the reversible specific capacity is 542 mAh g−1 with the capacitance retention of 82%, implying the excellent stability of AF-PE-6. The enhanced cell performance is attributed to the porous architecture of the aramid layer for trapping the dissolved sulfur-containing species and facilitating the charge transfer, as confirmed by SEM and EDS after 200 cycles. This work provides a facile way to construct the aramid fiber-coated separator for the inhibition of polysulfides in the Li–S battery.
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Luo Y, Ouyang Z, Lin Y, Song X, He S, Zhao J, Xiao Y, Lei S, Yuan C, Cheng B. Revealing the synergistic mechanism of multiply nanostructured V 2O 3 hollow nanospheres integrated with doped N, Ni heteroatoms, in-situ grown carbon nanotubes and coated carbon nanolayers for the enhancement of lithium-sulfur batteries. J Colloid Interface Sci 2022; 612:760-771. [PMID: 35030347 DOI: 10.1016/j.jcis.2021.12.193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 11/16/2022]
Abstract
Lithium sulfur (Li-S) batteries are regarded as one of the most promising future energy storage candidates on account of high theoretical specific capacity of 1675 mAh g-1 and energy density of 2600 Wh kg-1. However, their practical application is seriously hindered due to the poor conductivity and volume expansion of sulfur, the weak redox kinetics of lithium polysulfide (LPS), and the severe shuttle effect of LPS. Herein, V2O3@N,Ni-C nanostructures, multiply integrated with zero-dimensional (0D) V2O3 nanoparticles, 1D carbon nanotubes, 2D carbon coating layers and graphene, 3D hollow spheres, and doped N and Ni heteroatoms, were synthesized via a solvothermal method followed by chemical vapor deposition. After being used as a modifier for traditional commercial separator of Li-S batteries, the shuttle effect of LPS can be effectively suppressed owing to the abundant active physical and chemical adsorption sites derived from large specific surface area, rich porosity, and tremendous polarity of the V2O3 nanoparticles with multiple secondary nanostructure integration. Meanwhile, the transfer of Li+ ions and electrons can be effectively enhanced by the highly conductive 2D carbon network, and the kinetics of redox reaction (Li2Sn ↔ Li2S) can be accelerated by the doped N and Ni heteroatoms, leading to a synergistic promotion on the reutilization of the adsorbed LPS. Additionally, the unique 3D hollow structure can not only enhance the penetration of electrolyte, but also buffer the volume expansion of sulfur to some extent. Therefore, the rate capacity and cycling performance can be significantly enhanced by the multifunction synergism of adsorption, conductivity, catalysis, and volume buffering. An initial discharge capacity of 1590.4 mAh g-1can be achieved at 0.1C, and the discharge capacity of 803.5 mAh g-1can be still exhibited when increasing to 2C. After a long period of 500 cycles, additionally, the discharge specific capacity of 1142.2 mAh g-1 and capacity attenuation of 0.0617% per cycle can be obtained at 1C.
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Affiliation(s)
- Yahui Luo
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Zhiyong Ouyang
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China
| | - Yang Lin
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China
| | - Xueyou Song
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Song He
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Jie Zhao
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Yanhe Xiao
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Shuijin Lei
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Jiangxi 330022, China
| | - Baochang Cheng
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China; Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China.
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Muthuraj D, Murugan R, Pavul Raj RP, Kandregula GR, Ramanujam K. Dual-role Magnesium Aluminate Ceramic Film as an Advanced Separator and Polysulfide Trapper in Li-S battery: Experimental and DFT investigations. NEW J CHEM 2022. [DOI: 10.1039/d1nj05347g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing an advanced separator that could stop the polysulfide shuttling remains a work-in-progress in the Li-S battery domain. Most of the work reported so far concentrates on functionalizing the commercial...
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Ren Z, Li J, Gong Y, Li X, Liang J, Li Y, He C, Zhang Q, Ren X. Efficient capture and conversion of polysulfides by zinc protoporphyrin framework-embedded triple-layer nanofiber separator for advanced Li-S batteries. J Colloid Interface Sci 2021; 609:43-53. [PMID: 34890950 DOI: 10.1016/j.jcis.2021.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 12/16/2022]
Abstract
The practical application of Lithium-sulfur (Li-S) batteries is significantly inhibited by (i) the notable 'shuttle effect' of lithium polysulfides (LiPS), (ii) the corrosion of the lithium interface, and (iii) the sluggish redox reaction kinetics. The functional separator in the Li-S battery has the potential to provide the perfect solution to these problems. Herein a triple-layer multifunctional PVDF-based nanofiber separator, which contains GoTiN/PVDF layer on the top and bottom and ZnTPP/PVDF layer on the middle, is designed. The polarity and porous structure of this multifunctional separator can greatly improve the wettability of electrolytes and enhance the transportation of Li+. With the zinc-based porphyrin framework (ZnTPP) structure, this separator has a strong chemisorption and LiPS conversion ability, which greatly prevent the 'shuttle effect'. Consequently, the designed multilayer separator showed excellent electrochemical performance. As a result, the cell with GoTiN@ZnTPP@GoTiN nanofiber membrane displayed an initial discharge capacity of 1180 mAh/g with a benign capacity retention of 65.9% at 0.5C and high coulombic efficiency of more than 98.5% after 100 cycles. Even at 2C, it can still release a capacity of 798 mAh/g. Moreover, the remarkable capacity of 591 mAh/g could be achieved with a high sulfur load of 5.76 mg/cm2 under a current density of 0.1C. Based on these merits, this novel and scalable multifunctional separator is a promising candidate to replace the conventional PP separator for advanced Li-S batteries to deal with various challenges.
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Lin Y, Ouyang Z, He S, Song X, Luo Y, Zhao J, Xiao Y, Lei S, Yuan C, Cheng B. An individual sandwich hybrid nanostructure of cobalt disulfide in-situ grown on N doped carbon layer wrapped on multi-walled carbon nanotubes for high-efficiency lithium sulfur batteries. J Colloid Interface Sci 2021; 610:560-572. [PMID: 34838317 DOI: 10.1016/j.jcis.2021.11.102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 02/03/2023]
Abstract
Binding and trapping of lithium polysulfide (LPS) are being conceived as the most effective strategies to improve lithium-sulfur (Li-S) battery performance. Therefore, exploiting a simple but cost-effective approach for the absorption and conversion of LPS and the transfer of electrons and Li+ ions is of paramount importance. Herein, sandwich structure MWCNTs@N-doped-C@CoS2 integrated with multiple nanostructures of zero-dimensional (0D) CoS2 nanoparticles, 1D carbon nanotubes (CNTs), and 2D N-doped amorphous carbon layer was obtained, where MWCNTs was firstly uniformly attached with a polydopamine (PDA) of excellent adhesion, followed by hydrothermal method, the Co2+ nanoparticles were in-situ grown on the PDA by the formation of complex compound of Co2+ and N atoms in PDA, and then the CoS2 nanoparticles were in-situ grown on CNTs in a point-surface contact way by a bridging of N-doped amorphous carbon layer derived from the carbonization of attached PDA after the vulcanization at 500 °C under Ar atmosphere. The multifunction synergism of absorption, conductivity, and the kinetics of LPS redox is significantly improved, consequently effectively suppressing the shuttle effect and tremendously increasing the utilization rate of active substance. For the Li-S battery assembled with MWCNTs@N-doped-C@CoS2-modified separator, its rate capacity and cycling performance can be greatly enhanced. It can exhibit a high initial discharge capacity of 1590 mAh g-1 at 0.1 C, a stable long-term cycling performance with a relatively low capacity decay of 0.07% per cycle during 500 cycles at 1 C, and a reversible capacity of 772 mAh g-1 and a capacity decay of 0.04% per cycle during 250 cycles at 2 C. Even at a large current density of 4 C, an initial specific discharge capacity of 634 mAh g-1 can still be delivered. With a high sulfur loading of 5.0 mg cm-2, additionally, an outstanding cycling stability can also be well maintained at 685 mAh g-1 at 0.1 C after 50 cycles. This work provides a novel and simple but effective strategy to develop such sandwich hybrid materials comprised of polar metal sulfides and conductive networks via an effective bridging to help realize durable and stable Li-S battery.
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Affiliation(s)
- Yang Lin
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China; Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China
| | - Zhiyong Ouyang
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China
| | - Song He
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Xueyou Song
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Yahui Luo
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Jie Zhao
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Yanhe Xiao
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Shuijin Lei
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Jiangxi 330022, PR China
| | - Baochang Cheng
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, PR China; Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, PR China.
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Ma Y, Zhu M, Li S, Li B. Siloxane based copolymer sulfur as binder-free cathode for advances lithium-sulfur batteries. J Colloid Interface Sci 2020; 574:190-196. [PMID: 32315866 DOI: 10.1016/j.jcis.2020.04.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 11/19/2022]
Abstract
One of the reasons why lithium-sulfur batteries have not yet been commercialized is a great attenuation of the capacity, although their theoretical capacity is ultrahigh. To alleviate this problem, we developed multifunctional organic matter, 3-aminopropyltriethoxysilane (APS), for preparing a uniform hybrid consists of silica 3D network skeleton and copolymerized sulfur nanoparticles (cpS). In this hybrid, abundant amidogen in APS induced polymerization with sulfur, which formed uniform copolymerized sulfur nanoparticles (nano sulfur), restraining the shuttle effect of polysulfides. Meanwhile, polycondensation APS not only acted as an efficiently binder, affording compact cathodes, but also formed a stable 3D silica structure to encapsulate sulfur nanoparticles, relieving the volume change of sulfur. Consequently, this binder-free cpS composite exhibited much enhanced electrochemical performances, including a high capacity of 1187.8 mAh·g-1 at 0.1 C and a low capacity fading of 0.0654% per cycle for 500 cycles at 1 C. This study paved the way for high-energy-density batteries by simply applying a low-cost, environmentally-friendly, powerful network polymer cathode material.
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Affiliation(s)
- Yuxuan Ma
- Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China
| | - Mengqi Zhu
- Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China
| | - Songmei Li
- Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China.
| | - Bin Li
- Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science & Engineering, Beihang University, Beijing 100191, China.
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