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Deng S, Lv Y, Zhao Y, Lu H, Han Z, Wu L, Zhang X. Exquisitely constructing hierarchical carbon nanoarchitectures decorated with sulfides for high-performance Li-S batteries. Dalton Trans 2024; 53:4753-4763. [PMID: 38363131 DOI: 10.1039/d3dt04163h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
The sluggish reaction kinetics and notorious shuttle effect of polysulfides significantly hinder the practical application of lithium-sulfur batteries (LSBs). Therefore, polysulfides are anchored and their conversion reactions are catalyzed to enhance the performance of LSBs. Herein, an exquisite hierarchical carbon nanoarchitecture decorated with sulfides is designed and introduced into LSBs. Systematic experiments show that the nanoarchitecture not only enables rapid electron/ion migration but also functions as an active catalyst to increase polysulfide conversion, thus effectively reducing the shuttle effect. As a result, LSBs with the nanoarchitecture modified separator exhibited outstanding rate capacity (724.9 mA h g-1 at 5C), low self-discharge capacity loss (4.1% capacity loss after 72 h), and exceptional reversible capacity (1518.3 mA h g-1 at 0.1C and 25.6% capacity loss after 100 cycles). Through the design of a multifunctional separator, this study offers an effective way to minimize the shuttle effect and speed up redox conversion. The strategy of constructing nanoarchitectures provides an innovative route for hierarchical heterocatalyst design for LSBs.
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Affiliation(s)
- Siyu Deng
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Yanwei Lv
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Yang Zhao
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Huiqing Lu
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Zuqi Han
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Lili Wu
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
| | - Xitian Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China.
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2
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Li H, Zheng W, Wu H, Fang Y, Li L, Yuan W. Ultra-Dispersed α-MoC 1-x Embedded in a Plum-Like N-Doped Carbon Framework as a Synergistic Adsorption-Electrocatalysis Interlayer for High-Performance Li-S Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306140. [PMID: 37875718 DOI: 10.1002/smll.202306140] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/30/2023] [Indexed: 10/26/2023]
Abstract
The shuttle effect and sluggish redox kinetics of lithium polysulfides (LiPSs) severely hinder the scalable application of lithium-sulfurr (Li-S) batteries. Herein, the highly dispersed α-phase molybdenum carbide nano-crystallites embedded in a porous nitrogen-doped carbon framework (α-MoC1-x @NCF) are developed via a simple metal-organic frameworks (MOFs) assisted strategy and proposed as the multifunctional separator interlayer for Li-S batteries. The inlaid MoC1-x nanocrystals and in situ doped nitrogen atoms provide a strong chemisorption and outstanding electrocatalytic conversion toward LiPSs, whereas the unique plum-like carbon framework with hierarchical porosity enables fast electron/Li+ transfer and can physically suppress LiPSs shuttling. Benefiting from the synergistic trapping-catalyzing effect of the MoC1-x @NCF interlayer toward LiPSs, the assembled Li-S battery achieves high discharge capacities (1588.1 mAh g-1 at 0.1 C), impressive rate capability (655.8 mAh g-1 at 4.0 C) and ultra-stable lifespan (a low capacity decay of 0.059% per cycle over 650 cycles at 1.0 C). Even at an elevated sulfur loading (6.0 mg cm-2 ) and lean electrolyte (E/S is ≈5.8 µL mg-1 ), the battery can still achieve a superb areal capacity of 5.2 mAh cm-2 . This work affords an effective design strategy for the construction of muti-functional interlayer in advanced Li-S batteries.
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Affiliation(s)
- Hongxi Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Engineering Technology Research Centre of Advanced Insulating Coating, South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, 519175, China
| | - Wen Zheng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Engineering Technology Research Centre of Advanced Insulating Coating, South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, 519175, China
| | - Hongzheng Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Engineering Technology Research Centre of Advanced Insulating Coating, South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, 519175, China
| | - Yaobing Fang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Engineering Technology Research Centre of Advanced Insulating Coating, South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, 519175, China
| | - Li Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Wenhui Yuan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Engineering Technology Research Centre of Advanced Insulating Coating, South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, 519175, China
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3
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Chen L, Cao G, Li Y, Zu G, Duan R, Bai Y, Xue K, Fu Y, Xu Y, Wang J, Li X. A Review on Engineering Transition Metal Compound Catalysts to Accelerate the Redox Kinetics of Sulfur Cathodes for Lithium-Sulfur Batteries. NANO-MICRO LETTERS 2024; 16:97. [PMID: 38285078 PMCID: PMC10825111 DOI: 10.1007/s40820-023-01299-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/25/2023] [Indexed: 01/30/2024]
Abstract
Engineering transition metal compounds (TMCs) catalysts with excellent adsorption-catalytic ability has been one of the most effective strategies to accelerate the redox kinetics of sulfur cathodes. Herein, this review focuses on engineering TMCs catalysts by cation doping/anion doping/dual doping, bimetallic/bi-anionic TMCs, and TMCs-based heterostructure composites. It is obvious that introducing cations/anions to TMCs or constructing heterostructure can boost adsorption-catalytic capacity by regulating the electronic structure including energy band, d/p-band center, electron filling, and valence state. Moreover, the electronic structure of doped/dual-ionic TMCs are adjusted by inducing ions with different electronegativity, electron filling, and ion radius, resulting in electron redistribution, bonds reconstruction, induced vacancies due to the electronic interaction and changed crystal structure such as lattice spacing and lattice distortion. Different from the aforementioned two strategies, heterostructures are constructed by two types of TMCs with different Fermi energy levels, which causes built-in electric field and electrons transfer through the interface, and induces electron redistribution and arranged local atoms to regulate the electronic structure. Additionally, the lacking studies of the three strategies to comprehensively regulate electronic structure for improving catalytic performance are pointed out. It is believed that this review can guide the design of advanced TMCs catalysts for boosting redox of lithium sulfur batteries.
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Affiliation(s)
- Liping Chen
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Guiqiang Cao
- Institute of Advanced Electrochemical Energy and School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Yong Li
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Guannan Zu
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Ruixian Duan
- Institute of Advanced Electrochemical Energy and School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China
| | - Yang Bai
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Kaiyu Xue
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Yonghong Fu
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China
| | - Yunhua Xu
- Yulin University, Yulin, 719000, People's Republic of China
| | - Juan Wang
- Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, Xi'an University of Architecture and Technology, Xi'an, 710055, People's Republic of China.
| | - Xifei Li
- Institute of Advanced Electrochemical Energy and School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
- School of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China.
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4
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Al-Tahan MA, Miao B, Xu S, Cao Y, Hou M, Shatat MR, Asad M, Luo Y, Shrshr AE, Zhang J. The "dual-layer sulfur cathode" strategy: An In 2S 3/Bi 2S 3@rGO heterostructure as an interlayer/modified separator for boosting the areal capacities of lithium-sulfur batteries. J Colloid Interface Sci 2024; 654:753-763. [PMID: 37866047 DOI: 10.1016/j.jcis.2023.10.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/24/2023]
Abstract
The specific energies and energy densities of lithium-sulfur (Li-S) batteries are influenced by various cell parameters, including the sulfur loading, the sulfur weight percentage in the cathode, and the electrolyte/sulfur ratio. An In2S3/Bi2S3@rGO heterostructure was obtained by growing indium sulfide nanoparticles on the surface of bismuth sulfide nanoflowers in a graphene oxide (GO) solution via a one-step solvothermal approach. This structure was introduced as a modified separator/dual-layer sulfur cathode for Li-S batteries. The Bi2S3/In2S3 heterointerfaces act as active sites to speed up interfacial electron transfer, along with the entrapment, diffusion, and transformation of lithium polysulfides. A Li-S cell containing a dual-layer sulfur cathode (thin layer of In2S3/Bi2S3@rGO sandwiched between two thick layers of sulfur) and coupled with an In2S3/Bi2S3@rGO-coated separator suppressed the polysulfide shuttle effect. The cell based on the dual-layer sulfur cathode technology and operated at a current rate of 0.3C achieved a high capacity (7.1 mAh cm-2) after the 200th cycle, giving an electrolyte/sulfur ratio (10 µL mg-1) under a high sulfur loading (11.53 mg cm-2). These results demonstrate the unique nature of the dual-layer sulfur cathode technique, which can yield high energy density Li-S batteries with high sulfur loadings and low electrolyte/sulfur ratios.
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Affiliation(s)
- Mohammed A Al-Tahan
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China; Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Baoji Miao
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China.
| | - Sankui Xu
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China
| | - Yange Cao
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China
| | - Mengyao Hou
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China
| | - Mohamed R Shatat
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Muhammad Asad
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China
| | - Yanwei Luo
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China
| | - Aml E Shrshr
- School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China; Henan International Joint Laboratory of Nano-Photoelectric Magnetic Material, Henan University of Technology, Zhengzhou 450001, China; College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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5
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Xing H, Niu Y, Wang J, Liu Y, Yao X, Xu Y. Embedding cobalt (II, III) oxide nanoparticles into nitrogen-doped carbon nanotubes-grafted hollow polyhedrons as sulfur hosts for ultralong-life lithium-sulfur batteries. J Colloid Interface Sci 2023; 649:832-843. [PMID: 37390531 DOI: 10.1016/j.jcis.2023.06.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/01/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
The sluggish reaction kinetics and unfavorable shuttling effect are regarded as obstacles to the practical application of lithium-sulfur (Li-S) batteries. To resolve these inherent drawbacks, we synthesized novel multifunctional Co3O4@NHCP/CNT as the cathode materials consisting of carbon nanotubes (CNTs)-grafted N-doped hollow carbon polyhedrons (NHCP) embedded with cobalt (II, III) oxide (Co3O4) nanoparticles. The results indicate that the NHCP and interconnected CNTs could provide favorable channels for electron/ion transport and physically restrict the diffusion of lithium polysulfides (LiPSs). Furthermore, N doping and in-situ Co3O4 embedding could endow the carbon matrix with strong chemisorption and effective electrocatalytic activity toward LiPSs, thus prominently promoting the sulfur redox reaction. Benefiting from these synergistic effects, the Co3O4@NHCP/CNT electrode exhibits a high initial capacity of 1322.1 mAh/g at 0.1 C, and a capacity retention of 710.4 mAh/g after 500 cycles at 1 C. Impressively, even at a relatively high current density of 4 C, the Co3O4@NHCP/CNT electrode achieves a high capacity of 653.4 mAh/g and outstanding long-term cycle stability for 1000 cycles with a low decay rate of 0.035% per cycle. Hence, the design of N-doped CNTs-grafted hollow carbon polyhedrons coupled with transition metal oxides would provide effective promising perspective for developing high-performance Li-S batteries.
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Affiliation(s)
- Haiyang Xing
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yao Niu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jing Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yali Liu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xianghua Yao
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China
| | - Youlong Xu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China.
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6
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Wang Q, Liu A, Qiao S, Zhang Q, Huang C, Lei D, Shi X, He G, Zhang F. Mott-Schottky MXene@WS 2 Heterostructure: Structural and Thermodynamic Insights and Application in Ultra Stable Lithium-Sulfur Batteries. CHEMSUSCHEM 2023; 16:e202300507. [PMID: 37314096 DOI: 10.1002/cssc.202300507] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/15/2023]
Abstract
Due to the "shuttle effect" and low conversion kinetics of polysulfides, the cycle stability of lithium sulfur (Li-S) battery is unsatisfactory, which hinders its practical application. The Mott-Schottky heterostructures for Li-S batteries not only provide more catalytic/adsorption active sites, but also facilitate electrons transport by a built-in electric field, which are both beneficial for polysulfides conversion and long-term cycle stability. Here, MXene@WS2 heterostructure was constructed by in-situ hydrothermal growth for separator modification. In-depth ultraviolet photoelectron spectroscopy and ultraviolet visible diffuse reflectance spectroscopy analysis reveals that there is an energy band difference between MXene and WS2 , confirming the heterostructure nature of MXene@WS2 . DFT calculations indicate that the Mott-Schottky MXene@WS2 heterostructure can effectively promote electron transfer, improve the multi-step cathodic reaction kinetics, and further enhance polysulfides conversion. The built-in electric field of the heterostructure plays an important role in reducing the energy barrier of polysulfides conversion. Thermodynamic studies reveal the best stability of MXene@WS2 during polysulfides adsorption. As a result, the Li-S battery with MXene@WS2 modified separator exhibits high specific capacity (1613.7 mAh g-1 at 0.1 C) and excellent cycling stability (2000 cycles with 0.0286 % decay per cycle at 2 C). Even at a high sulfur loading of 6.3 mg cm-2 , the specific capacity could be retained by 60.0 % after 240 cycles at 0.3 C. This work provides deep structural and thermodynamic insights into MXene@WS2 heterostructure and its promising prospect of application in high performance Li-S batteries.
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Affiliation(s)
- Qian Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Anmin Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Shaoming Qiao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Qiang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Chunhong Huang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Da Lei
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Xiaoshan Shi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Gaohong He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Fengxiang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, P. R. China
- School of Chemical Engineering, Dalian University of Technology, Panjin, 124221, P. R. China
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7
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Sun R, Qu M, Peng L, Yang W, Wang Z, Bai Y, Sun K. Regulating Electrochemical Kinetics of CoP by Incorporating Oxygen on Surface for High-Performance Li-S Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302092. [PMID: 37292041 DOI: 10.1002/smll.202302092] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/11/2023] [Indexed: 06/10/2023]
Abstract
Lithium-sulfur (Li-S) batteries are widely studied because of their high theoretical specific capacity and environmental friendliness. However, the further development of Li-S batteries is hindered by the shuttle effect of lithium polysulfides (LiPSs) and the sluggish redox kinetics. Since the adsorption and catalytic conversion of LiPSs mainly occur on the surface of the electrocatalyst, regulating the surface structure of electrocatalysts is an advisable strategy to solve the obstacles in Li-S batteries. Herein, CoP nanoparticles with high oxygen content on surface embedded in hollow carbon nanocages (C/O-CoP) is employed to functionalize the separators and the effect of the surface oxygen content of CoP on the electrochemical performance is systematically explored. Increasing the oxygen content on CoP surface can enhance the chemical adsorption to lithium polysulfides and accelerate the redox conversions kinetics of polysulfides. The cell with C/O-CoP modified separator can achieve the capacity of 1033 mAh g-1 and maintain 749 mAh g-1 after 200 cycles at 2 C. Moreover, DFT calculations are used to reveal the enhancement mechanism of oxygen content on surface of CoP in Li-S chemistry. This work offers a new insight into developing high-performance Li-S batteries from the perspective of surface engineering.
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Affiliation(s)
- Rui Sun
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Meixiu Qu
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Lin Peng
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Weiwei Yang
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Zhenhua Wang
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yu Bai
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Kening Sun
- Beijing Key Laboratory of Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
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8
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Su Z, Qiu W, He Y, Zeng Y, Xie D, Xiao X, Nan J, Zuo X. A strontium ferrite modified separator for adsorption and catalytic conversion of polysulfides for excellent lithium-sulfur batteries. Dalton Trans 2023. [PMID: 37335253 DOI: 10.1039/d3dt01126g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Lithium-sulfur batteries (LSBs) have emerged as one of the ideal contenders for the upcoming generation of high energy storage devices due to their superb energy density. Nonetheless, the shuttle effect generated by intermediate lithium polysulfides (LiPSs) during cell cycling brings about capacity degradation and poor cycling stability of LSBs. Here, a versatile SrFe12O19 (FSO) and acetylene black (AB) modified PP separator is first presented to inhibit the shuttle effect. Thanks to the strong chemical interaction of Fe and Sr with polysulphides in FSO, it can trap LiPSs and provide catalytic sites for their conversion. Therefore, the cell using the FSO/AB@PP separator has a high initial discharge specific capacity (930 mA h g-1) at 2 C and lasts for 1000 cycles with a remarkably low fading rate (0.036% per cycle), while those using PE and AB@PP separators have inferior initial specific capacities (255 mA h g-1 and 652 mA h g-1, respectively) and fail within 600 cycles. This work proposes a novel approach for addressing the shuttle of LiPSs from a bimetallic oxide modified separator.
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Affiliation(s)
- Zhuoying Su
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Wenjuan Qiu
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Yuming He
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Ying Zeng
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Dongming Xie
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Xin Xiao
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Junmin Nan
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
| | - Xiaoxi Zuo
- School of Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
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9
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Zhu J, Zeng L, Song Y, Peng F, Wang Y, He T, Deng L, Zhang P. High performance sulfur/carbon cathode for Na-S battery enabled by electrocatalytic effect of Sn-doped In 2S 3. J Colloid Interface Sci 2023:S0021-9797(23)00943-8. [PMID: 37248161 DOI: 10.1016/j.jcis.2023.05.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/14/2023] [Accepted: 05/21/2023] [Indexed: 05/31/2023]
Abstract
Room-temperature sodium-sulfur (RT Na-S) batteries have been attracting enormous interests due to their low-cost, high capacity and environmental benignity. However, the shuttle effect and the sluggish electrochemical reaction activity of sodium polysulfides (NaPSs) seriously restrict their practical application. To solve these issues, we rationally designed an advanced Sn-doped In2S3/S/C cathode for RT Na-S batteries by magnetron sputtering in this work, which exhibited a high reversible capacity (1663.5 mAh g-1 at 0.1 A g-1) and excellent cycling performance (902.9 mAh g-1 after 50 cycles). The in situ electrochemical impedance spectroscopy indicated that the Sn-doped In2S3 coating can accelerate charge-transfer kinetics and facilitate the diffusion of Na+. Furthermore, theoretical calculation revealed that doping of Sn into In2S3 can reduce the energy band gap, thus accelerating the electron transfer and promoting the electrochemical conversion of active species. It is demonstrated that adjusting the electronic structure is a reliable method to improve the electrocatalytic effect of catalyst and significantly improve the performance of S cathode in RT Na-S batteries.
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Affiliation(s)
- Jianhui Zhu
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Linchao Zeng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yumin Song
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, PR China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Yanyi Wang
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Tingshu He
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Peixin Zhang
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
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10
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Kang X, Jin Z, Peng H, Cheng Z, Liu L, Li X, Xie L, Zhang J, Dong Y. The role of selenium vacancies functionalized mediator of bimetal (Co, Fe) selenide for high-energy-density lithium-sulfur batteries. J Colloid Interface Sci 2023; 637:161-172. [PMID: 36701862 DOI: 10.1016/j.jcis.2023.01.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/08/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
Lithium-sulfur (Li-S) batteries are currently only in the basic research stage and have not been commercialized, which is mainly affected by the poor conductivity of sulfur/lithium sulfide (S/Li2S), volume expansion effect of sulfur and the shuttle effect of lithium polysulfides (LiPSs). Herein, a three dimensional (3D) carbon nanotubes (CNTs) decorated cubic Co9Se8-x/FeSe2-y (0 < x < 8, 0 < y < 2) composite (Co9Se8-x/FeSe2-y@CNTs) is developed, and used as the functionalized mediator on polypropylene (PP) in Li-S batteries. Benefiting from the good electrical conductivity, large number of Se vacancies and the triple block/adsorption/catalytic effects of Co9Se8-x/FeSe2-y@CNTs, the cell with Co9Se8-x/FeSe2-y@CNTs//PP modified separator delivers a high reversible capacity (1103.5 mA h g-1) at 1C after three cycles activation at 0.5C and remains 446 mA g h-1 after 750 cycles with a 0.08% capacity decay rate each cycle. Moreover, at 0.2C, a high areal capacity of 3.63 mA h cm-2 after 100 cycles with a high sulfur loading of 4.1 mg cm-2 is obtained. The in-situ XRD tests revealing the transition path of α-S8 → Li2S → β-S8 during the first charge-discharge process, then β-S8 → Li2S → β-S8 conversion reaction in the next cycles, and firstly determine the sulfur-selenide active intermediates (Se1.1S6.9) during cycles. The work provides a new insight into the development of bimetallic selenide composites by defect engineering with highly adsorptive and catalytic properties for Li-S batteries.
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Affiliation(s)
- Xiyang Kang
- College of Science, Henan Agricultural University, Zhengzhou 450002, China; College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ziqian Jin
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Huaiqi Peng
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Zihao Cheng
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Lijie Liu
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Xin Li
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Lixia Xie
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Yutao Dong
- College of Science, Henan Agricultural University, Zhengzhou 450002, China.
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11
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Zhan M, Hong Y, Fang Z, Qiu D. Visible light-driven photocatalytic degradation of Microcystin-LR by Bi 2WO 6/Reduced graphene oxide heterojunctions: Mechanistic insight, DFT calculation and degradation pathways. CHEMOSPHERE 2023; 321:138105. [PMID: 36764614 DOI: 10.1016/j.chemosphere.2023.138105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Developing heterostructure photocatalysts for removing Microcystin-LR (MC-LR) under visible light was of positive significance to control the risk of Microcystins and ensure the safety of water quality. Herein, the Bi2WO6/Reduced graphene oxide (RGO) nanocomposites were prepared via a simple one-spot hydrothermal method for the first time to degrade MC-LR. The optimized Bi2WO6/RGO (Bi2WO6/RGO3%) achieved a removal efficiency of 82.3% toward MC-LR, with 1.9-fold higher efficiencies than Bi2WO6, and it showed superior reusability and high stability after 5 cycles. The degradation efficiency of MC-LR demonstrated a negative trend with the initial concentration of MC-LR, fulvic acid, and initial algal density increased, while MC-LR removal rate for the presence of anions was in the order of Cl- > CO3-2 > NO3- > H2PO4-. The degradation efficiency of MC-LR could reach up to 82.3% within 180 min in the neutral condition. The active species detection experiments and EPR measurements demonstrated that the holes (h+), hydroxide radicals (∙OH), and superoxide radicals (∙O2-) participated in the degradation of MC-LR. The DFT calculations showed that 0.56 of electron transferred from Bi2WO6 to RGO, indicating RGO introduction could prevent the recombination of photoelectrons and holes and was beneficial for MC-LR degradation. Finally, the possible intermediate products and degradation pathways were also proposed by the LC-MS/MS analysis.
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Affiliation(s)
- Mingming Zhan
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Yu Hong
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Zhi Fang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Daping Qiu
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
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12
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Ma L, Zhang Y, Zhang C, Zhu H, Zhang S, Yan M, Liang C, Zhang Y, Chen Y, Chen L, Wei W, Zhou L. A separator modified by barium titanate with macroscopic polarization electric field for high-performance lithium-sulfur batteries. NANOSCALE 2023; 15:5899-5908. [PMID: 36876719 DOI: 10.1039/d3nr00263b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The detrimental "shuttling effect" of lithium polysulfides and the sluggish kinetics of the sulfur redox reaction in lithium-sulfur batteries (LSBs) impede the practical application. Considering the high polar chemistry facilitates the anchoring of polysulfides, ferroelectric materials have gradually been employed as functionalized separators to suppress the "shuttling effect". Herein, a functional separator coated with BaTiO3 with a macroscopic polarization electric field (poled-BaTiO3) is designed for retarding the problematic shuttle effect and accelerating redox kinetics. Theoretical calculations and experiments revealed that resultant positive charged alignments on the poled-BaTiO3 coating can chemically immobilize polysulfides, effectively improving the cyclic stability of LSBs. Moreover, the simultaneous reinforcement of the built-in electric field in the poled-BaTiO3 coating can also improve Li-ion transportation for accelerating redox kinetics. Benefiting from these attributes, the as-developed LSB attains an initial discharge capacity of 1042.6 mA h g-1 and high cyclic stability of over 400 cycles at 1 C rate. The corresponding LSB pouch cell was also assembled to validate the concept. This work is anticipated to provide new insight into the development of high-performing LSBs through engineering ferroelectric-enhanced coatings.
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Affiliation(s)
- Li Ma
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
- Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi, 417000, China
| | - Youquan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Chunxiao Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Hai Zhu
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, Hunan, 410022, P. R. China
| | - Shuai Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Mingyang Yan
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Chaoping Liang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Yan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Yuejiao Chen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Libao Chen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Weifeng Wei
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
| | - Liangjun Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, People's Republic of China.
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13
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Shrshr AE, Dong Y, Al-Tahan MA, Han L, Kang X, Guan H, Zhang J. Novel hydrothermal synthesis of Mn-TaS 3@rGO nanocomposite as a superior multifunctional mediator for advanced Li-S batteries. J Colloid Interface Sci 2023; 633:1042-1053. [PMID: 36516680 DOI: 10.1016/j.jcis.2022.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/24/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022]
Abstract
Because of its high theoretical capacity and energy density, the lithium-sulfur (Li-S) battery is a desirable next-generation energy storage technology. However, the shuttle effect of lithium polysulfide and the slow sulfur reaction kinetics remain significant barriers to Li-S battery application. In this work, tantalum trisulfide (TaS3) and selective manganese-doped tantalum trisulfide (Mn-TaS3) nanocomposites on reduced graphene oxide surface were developed via a one-step hydrothermal method for the first time and introduced as a novel multifunctional mediator in the Li-S battery. The surface engineering of Mn-TaS3@rGO with abundant defects not only exhibits the strong adsorption performance on lithium polysulfides (LiPSs) but also demonstrates the remarkable electrocatalytic effect on both the LiPSs conversion reaction in symmetric cell and the Li2S nucleation/dissolution processes in potentiostatic experiments, which would substantially promote the electrochemical performance of LSB. The cell assembled with Mn-TaS3@rGO/PP modified separator could significantly improve the cell conductivity and effectively accelerate the redox conversion of active sulfur during the charging/discharging process, which delivers exceptional long-term cycling with 683 mA h g-1 retention capacity after the 1000th cycle at 0.3C under the sulfur loading of 2.7 mg cm-2. Even at the E/S ratio as low as 5.0 µL mg-1, the reversible specific capacity of 692 mA h g-1 can be offered at 0.2C over 300 cycles. This research indicates that the novel Mn-TaS3@rGO multifunctional mediator is successfully fabricated and applied in Li-S batteries with extraordinary electrochemical performances and gives a strategy to explore the construction of a modified functional separator.
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Affiliation(s)
- Aml E Shrshr
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Yutao Dong
- College of Science, Henan Agricultural University, Zhengzhou 450002, China.
| | - Mohammed A Al-Tahan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China; Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Lifeng Han
- Key Laboratory of Surface and Interface Science and Technology, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
| | - Xiyang Kang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Hui Guan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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14
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Dey S, Singh G. WS 2 Nanosheet Loaded Silicon-Oxycarbide Electrode for Sodium and Potassium Batteries. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4185. [PMID: 36500808 PMCID: PMC9736738 DOI: 10.3390/nano12234185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Transition metal dichalcogenides (TMDs) such as the WS2 have been widely studied as potential electrode materials for lithium-ion batteries (LIB) owing to TMDs' layered morphology and reversible conversion reaction with the alkali metals between 0 to 2 V (v/s Li/Li+) potentials. However, works involving TMD materials as electrodes for sodium- (NIBs) and potassium-ion batteries (KIBs) are relatively few, mainly due to poor electrode performance arising from significant volume changes and pulverization by the larger size alkali-metal ions. Here, we show that Na+ and K+ cyclability in WS2 TMD is improved by introducing WS2 nanosheets in a chemically and mechanically robust matrix comprising precursor-derived ceramic (PDC) silicon oxycarbide (SiOC) material. The WS2/SiOC composite in fibermat morphology was achieved via electrospinning followed by thermolysis of a polymer solution consisting of a polysiloxane (precursor to SiOC) dispersed with exfoliated WS2 nanosheets. The composite electrode was successfully tested in Na-ion and K-ion half-cells as a working electrode, which rendered the first cycle charge capacity of 474.88 mAh g-1 and 218.91 mAh g-1, respectively. The synergistic effect of the composite electrode leads to higher capacity and improved coulombic efficiency compared to the neat WS2 and neat SiOC materials in these cells.
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15
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Ma W, Shao Z, Yao J, Zhao K, Ma X, Wu L, Zhang X. Mott-Schottky electrocatalyst selectively mediates the sulfur species conversion in lithium-sulfur batteries. J Colloid Interface Sci 2022; 631:114-124. [DOI: 10.1016/j.jcis.2022.11.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/31/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
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16
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Guan H, Dong Y, Kang X, Han Y, Cheng Z, Han L, Xie L, Chen W, Zhang J. Extraordinary electrochemical performance of lithium–sulfur battery with 2D ultrathin BiOBr/rGO sheet as an efficient sulfur host. J Colloid Interface Sci 2022; 626:374-383. [DOI: 10.1016/j.jcis.2022.06.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/18/2022] [Accepted: 06/26/2022] [Indexed: 10/31/2022]
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17
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Dong Y, Zhang R, Peng H, Han D, Zheng X, Han Y, Zhang J. Active Sulfur-Host Material VS 4 with Surface Defect Engineering: Intercalation-Conversion Hybrid Cathode Boosting Electrochemical Performance of Li-S Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32474-32485. [PMID: 35802905 DOI: 10.1021/acsami.2c06067] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Transition-metal sulfides as late-model electrocatalysts usually remain inactive in lithium-sulfur (Li-S) batteries in spite of their advantages to accelerate the rapid conversion of lithium polysulfides (LiPSs). Herein, a series of cobalt-doped vanadium tetrasulfide/reduced graphene oxide (x%Co-VS4/rGO) composites with an ultrathin layered structure as an active sulfur-host material are prepared by a one-pot hydrothermal method. The well-designed two-dimensional ultrathin 3%Co-VS4/rGO with heteroatom architecture defects (defect of Co-doping and defect of S-vacancies) can significantly improve the adsorption ability on LiPSs, the electrocatalytic activity in the Li2S potentiostatic deposition, and the active sulfur reduction/oxidation conversion reactions and greatly boost the electrochemical performances of Li-S batteries. On the one hand, the ultrathin 3%Co-VS4/rGO possesses good conductivity inheriting from rGO which contributes to the capacity of internal redox reactions on lithiation from VS4. On the other hand, the hybrid architectures provide strong adsorption and excellent electrocatalytic ability on LiPSs, which benefit from the surface defects caused by heteroatom doping. The S@3%Co-VS4/rGO cathode displays a high specific capacity of 1332.6 mA h g-1 at 0.2 C and a low-capacity decay of only 0.05% per cycle over 1000 cycles at 3 C with a primary capacity of 633.1 mA h g-1. Furthermore, when the sulfur loading (single-side coating) reaches 4.48 mg cm-2, it still can deliver 756.2 mA h g-1 after the 100th cycle at 0.2 C with 89.5% capacity retention. In addition, the in situ X-ray diffraction test reveals that the sulfur conversion mechanism is the processes of α-S8 → Li2S → β-S8 (first cycle) and then β-S8 ↔ Li2S during the subsequent cycles. The designing strategy with heteroatom doping and self-intercalation capacity adopted in this work would provide novel inspiration for fabricating advanced sulfur-host materials to achieve excellent electrochemical capability in Li-S batteries.
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Affiliation(s)
- Yutao Dong
- College of Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Ran Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Huaiqi Peng
- College of Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Dandan Han
- College of Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Xianfu Zheng
- College of Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Yumiao Han
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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18
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Kang X, Dong Y, Guan H, Al-Tahan MA, Zhang J. Manipulating the electrocatalytic activity of sulfur cathode via distinct cobalt sulfides as sulfur host materials in lithium-sulfur batteries. J Colloid Interface Sci 2022; 622:515-525. [PMID: 35525150 DOI: 10.1016/j.jcis.2022.04.156] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/26/2022] [Accepted: 04/26/2022] [Indexed: 01/08/2023]
Abstract
For the better development of lithium-sulfur (Li-S) batteries, it is necessary to fabricate sulfur hosts with cheap, rapid sulfur reaction dynamic and inhibiting the shuttling effect of lithium polysulfides (LiPSs). Herein, four hollow cubic materials with two kinds of nitrogen-doped carbon derived from Prussian blue analogues (PBA) precursor, Co9S8/MnS/NC@NC-400, CoS2/MnS/NC@NC-500, CoS1.097/MnS/NC@NC-600 and CoS1.097/MnS/NC@NC-700, are reported when the vulcanization temperatures are regulated at 400 °C, 500 °C, 600 °C and 700 °C, respectively. Among them, Co9S8/MnS/NC@NC-400, CoS2/MnS/NC@NC-500 and CoS1.097/MnS/NC@NC-600 have the similar hollow cubic structure, which can physically confine the LiPSs's shuttle, however, the Co vacancies of CoS1.097 in the CoS1.097/MnS/NC@NC-600 can promote the rearrangement of surface electrons, which is beneficial to the diffusion of Li+/e-, improving the electrochemical reaction kinetics. As for the CoS1.097/MnS/NC@NC-700 with the same substance but almost collapsed structure, the CoS1.097/MnS/NC@NC-600 can accommodate the volume expansion of sulfur conversion. In the four sulfur-host materials, the CoS1.097/MnS/NC@NC-600 not only displays the outstanding adsorption ability on LiPSs, but also presents the best electrocatalytic activity in the Li2S potentiostatic deposition experiments and active sulfur reduction/oxidation conversion reactions, greatly promoting the electrochemical performances of Li-S batteries. The S@CoS1.097/MnS/NC@NC-600 cathode can deliver 1010.2 mA h g-1 at 0.5 C and maintain 651.1 mA h g-1 after 200 cycles. In addition, the in-situ X-ray diffraction (in-situ XRD) test reveals that the sulfur conversion mechanism is the processes of the α-S8 → Li2S → β-S8 (first cycle), then β-S8 ↔ Li2S during the subsequent cycles. Based on the fundamental understanding of the design and preparation of CoxSy/MnS/NC@NC hosts with the desired adsorption and catalysis functions, the work can provide new insights and reveal the defect-engineering to develop the advanced Li-S batteries.
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Affiliation(s)
- Xiyang Kang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yutao Dong
- College of Science, Henan Agricultural University, Zhengzhou 450002, Henan, China.
| | - Hui Guan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Mohammed A Al-Tahan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China; Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China.
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19
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In Situ Growth of W2C/WS2 with Carbon-Nanotube Networks for Lithium-Ion Storage. NANOMATERIALS 2022; 12:nano12061003. [PMID: 35335817 PMCID: PMC8953370 DOI: 10.3390/nano12061003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 12/10/2022]
Abstract
The combination of W2C and WS2 has emerged as a promising anode material for lithium-ion batteries. W2C possesses high conductivity but the W2C/WS2-alloy nanoflowers show unstable performance because of the lack of contact with the leaves of the nanoflower. In this study, carbon nanotubes (CNTs) were employed as conductive networks for in situ growth of W2C/WS2 alloys. The analysis of X-ray diffraction patterns and scanning/transmission electron microscopy showed that the presence of CNTs affected the growth of the alloys, encouraging the formation of a stacking layer with a lattice spacing of ~7.2 Å. Therefore, this self-adjustment in the structure facilitated the insertion/desertion of lithium ions into the active materials. The bare W2C/WS2-alloy anode showed inferior performance, with a capacity retention of ~300 mAh g−1 after 100 cycles. In contrast, the WCNT01 anode delivered a highly stable capacity of ~650 mAh g−1 after 100 cycles. The calculation based on impedance spectra suggested that the presence of CNTs improved the lithium-ion diffusion coefficient to 50 times that of bare nanoflowers. These results suggest the effectiveness of small quantities of CNTs on the in situ growth of sulfides/carbide alloys: CNTs create networks for the insertion/desertion of lithium ions and improve the cyclic performance of metal-sulfide-based lithium-ion batteries.
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