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Gao Y, Deng Y, Xia S, Xi X, Zhang Z, Wang Y, Yang D, Li T, Dong A. Encasing Few-Layer MoS 2 within 2D Ordered Cubic Graphitic Cages to Smooth Trapping-Conversion of Lithium Polysulfides for Dendrite-Free Lithium-Sulfur Batteries. Small 2024:e2402412. [PMID: 38647117 DOI: 10.1002/smll.202402412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/09/2024] [Indexed: 04/25/2024]
Abstract
The industrialization of lithium-sulfur (Li-S) batteries faces challenges due to the shuttling effect of lithium polysulfides (LiPSs) and the growth of lithium dendrites. To address these issues, a simple and scalable method is proposed to synthesize 2D membranes comprising a single layer of cubic graphitic cages encased with few-layer, curved MoS2. The distinctive 2D architecture is achieved by confining the epitaxial growth of MoS2 within the open cages of a 2D-ordered mesoporous graphitic framework (MGF), resulting in MoS2@MGF heterostructures with abundant sulfur vacancies. The experimental and theoretical studies establish that these MoS2@MGF membranes can act as a multifunctional interlayer in Li-S batteries to boost their comprehensive performance. The inclusion of the MoS2@MGF interlayer facilitates the trapping and conversion kinetics of LiPSs, preventing their shuttling effect, while simultaneously promoting uniform lithium deposition to inhibit dendrite growth. As a result, Li-S batteries with the MoS2@MGF interlayer exhibit high electrochemical performance even under high sulfur loading and lean electrolyte conditions. This work highlights the potential of designing advanced MoS2-encased heterostructures as interlayers, offering a viable solution to the current limitations plaguing Li-S batteries.
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Affiliation(s)
- Yifan Gao
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yuwei Deng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Shenxin Xia
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Xiangyun Xi
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Zhebin Zhang
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yajun Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325027, China
| | - Dong Yang
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Tongtao Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Angang Dong
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
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Wang L, Huang J, Shen Y, Ma M, Ruan W, Zhang M. ARGET-ATRP-Mediated Grafting of Bifunctional Polymers onto Silica Nanoparticles Fillers for Boosting the Performance of High-Capacity All-Solid-State Lithium-Sulfur Batteries with Polymer Solid Electrolytes. Polymers (Basel) 2024; 16:1128. [PMID: 38675047 PMCID: PMC11054452 DOI: 10.3390/polym16081128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/13/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The shuttle effect in lithium-sulfur batteries, which leads to rapid capacity decay, can be effectively suppressed by solid polymer electrolytes. However, the lithium-ion conductivity of polyethylene oxide-based solid electrolytes is relatively low, resulting in low reversible capacity and poor cycling stability of the batteries. In this study, we employed the activator generated through electron transfer atom transfer radical polymerization to graft modify the surface of silica nanoparticles with a bifunctional monomer, 2-acrylamide-2-methylpropanesulfonate, which possesses sulfonic acid groups with low dissociation energy for facilitating Li+ migration and transfer, as well as amide groups capable of forming hydrogen bonds with polyethylene oxide chains. Subsequently, the modified nanoparticles were blended with polyethylene oxide to prepare a solid polymer electrolyte with low crystallinity and high ion conductivity. The resulting electrolyte demonstrated excellent and stable electrochemical performance, with a discharge-specific capacity maintained at 875.2 mAh g-1 after 200 cycles.
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Affiliation(s)
- Liang Wang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
| | - Junyue Huang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
| | - Yujian Shen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
| | - Mengqi Ma
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
| | - Wenhong Ruan
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China
| | - Mingqiu Zhang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (L.W.); (J.H.); (Y.S.); (M.M.); (M.Z.)
- Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China
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Tang K, Peng X, Zhang Z, Li G, Wang J, Wang Y, Chen C, Zhang N, Xie X, Wu Z. A Highly Dispersed Cobalt Electrocatalyst with Electron-Deficient Centers Induced by Boron toward Enhanced Adsorption and Electrocatalysis for Room-Temperature Sodium-Sulfur Batteries. Small 2024:e2311151. [PMID: 38456785 DOI: 10.1002/smll.202311151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/05/2024] [Indexed: 03/09/2024]
Abstract
As vitally prospective candidates for next-generation energy storage systems, room-temperature sodium-sulfur (RT-Na/S) batteries continue to face obstacles in practical implementation due to the severe shuttle effect of sodium polysulfides and sluggish S conversion kinetics. Herein, the study proposes a novel approach involving the design of a B, N co-doped carbon nanotube loaded with highly dispersed and electron-deficient cobalt (Co@BNC) as a highly conductive host for S, aiming to enhance adsorption and catalyze redox reactions. Crucially, the pivotal roles of the carbon substrate in prompting the electrocatalytic activity of Co are elucidated. The experiments and density functional theory (DFT) calculations both demonstrate that after B doping, stronger chemical adsorption toward polysulfides (NaPSs), lower polarization, faster S conversion kinetics, and more complete S transformation are achieved. Therefore, the as-assembled RT-Na/S batteries with S/Co@BNC deliver a high reversible capacity of 626 mAh g-1 over 100 cycles at 0.1 C and excellent durability (416 mAh g-1 over 600 cycles at 0.5 C). Even at 2 C, the capacity retention remains at 61.8%, exhibiting an outstanding rate performance. This work offers a systematic way to develop a novel Co electrocatalyst for RT-Na/S batteries, which can also be effectively applied to other transition metallic electrocatalysts.
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Affiliation(s)
- Kejian Tang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xiangqi Peng
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Ziying Zhang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Guohao Li
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jie Wang
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Yingxinjie Wang
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Chi Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China
| | - Nan Zhang
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xiuqiang Xie
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Zhenjun Wu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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Li Y, Liu D, Tian Y, Wang C. Design of a sulfur host with CuCo 2O 4 supported on carbon cloth for lithium sulfur batteries. Chem Commun (Camb) 2024; 60:1273-1276. [PMID: 38194281 DOI: 10.1039/d3cc05383k] [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] [Indexed: 01/10/2024]
Abstract
A high-efficiency sulfur host with bimetallic oxide CuCo2O4 cubes supported on carbon cloth has been designed and used in lithium sulfur batteries, which can suppress the "shuttle effect" and boost the redox reaction kinetics. The unique three-dimensional cube-based structure realized a high sulfur loading of 7.1 mg cm-2, and the corresponding assembled lithium sulfur battery delivered excellent cycling stability over 100 cycles at 0.1C.
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Affiliation(s)
- Yinuo Li
- Institute for New Energy Materials and Low-Carbon Technologies, Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
| | - Dan Liu
- Institute for New Energy Materials and Low-Carbon Technologies, Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
| | - Yuan Tian
- Institute for New Energy Materials and Low-Carbon Technologies, Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
| | - Cheng Wang
- Institute for New Energy Materials and Low-Carbon Technologies, Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
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