1
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Xu X, Dou H, Zhao Z, Ali R, Zhe R, Zheng L, Bao X, Fan B, Wang HE. Interface control in TiO 2/BaTiO 3 ferroelectric heterostructures: A bidirectional catalytic pathway toward high-performance Li-S batteries. J Colloid Interface Sci 2025; 692:137467. [PMID: 40179660 DOI: 10.1016/j.jcis.2025.137467] [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: 12/29/2024] [Revised: 03/21/2025] [Accepted: 03/27/2025] [Indexed: 04/05/2025]
Abstract
Li-S batteries (LSBs), noted for their high energy density and low cost, face challenges due to sluggish lithium polysulfide (LiPS) redox kinetics and complex phase transformations during charge/discharge cycles. Herein, we introduce a novel hollow nanocomposite, a titanium oxide/barium titanate (TiO2/BaTiO3) heterostructure with an ultrathin carbon coating, designed to act as a bidirectional electrocatalyst, enhancing the sequential conversion of sulfur (S8) to Li2S4 and then to lithium sulfide (Li2S). The ferroelectric nature of BaTiO3 enhances LiPS adsorption, reducing the shuttling effect and improving battery performance. The interface-induced electric field directs LiPS migration to TiO2, facilitating the redox process. An applied electric field polarizes the heterostructure, optimizing the dipole moment of BaTiO3 and further enhancing performance. Electrochemical measurements and theoretical calculations confirm the superior electrocatalytic activity of TiO2/BaTiO3@C for LiPS redox kinetics. The composite electrode achieves a high initial capacity of 836 mAh g-1 at 1C, retaining 64 % of its capacity after 400 cycles with a low fading rate of 0.075 % per cycle. Under practical operation conditions (sulfur areal loading: 6.02 mg cm-2; electrolyte/sulfur (E/S) ratio: 6.5 μL mg-1), the as-fabricated LSBs still demonstrate good areal capacities of 5.18, 4.09, 3.84, 3.64, and 3.15 mAh cm-2, respectively, at current densities from 0.05 to 0.5C. This study elucidates the critical synergy between self-induced electric fields and heterostructure engineering in polysulfide conversion, providing fundamental guidance for designing advanced catalysts in high-energy LSBs and related electrochemical energy systems.
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Affiliation(s)
- Xuanpan Xu
- College of Physics and Electronic Information, Yunnan Normal University, 650500 Kunming, China
| | - Haoyun Dou
- College of Physics and Electronic Information, Yunnan Normal University, 650500 Kunming, China
| | - Ziwei Zhao
- College of Physics and Electronic Information, Yunnan Normal University, 650500 Kunming, China
| | - Rawaid Ali
- College of Physics and Electronic Information, Yunnan Normal University, 650500 Kunming, China
| | - Rongjie Zhe
- MOE Key Laboratory of UV Light Emitting Materials & Technology, Department of Physics, Northeast Normal University, Changchun 130024, China.
| | - Lingxia Zheng
- Department of Applied Chemistry, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, Zhejiang University of Technology, 310014 Hangzhou, China
| | - Xinjun Bao
- School of Textile and Fashion, Hunan Institute of Engineering, 411104 Xiangtan, China.
| | - Baoyan Fan
- College of Materials and New Energy, Chongqing University of Science and Technology, 401331 Chongqing, China
| | - Hong-En Wang
- College of Physics and Electronic Information, Yunnan Normal University, 650500 Kunming, China.
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2
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Zhe R, Dou H, Xu X, Zhao Z, Chen L, Zhao Q, Bao X, Cao G, Wang HE. rGO@TiO 2-x Schottky heterojunction for enhanced bidirectional catalysis in polysulfide conversion. J Colloid Interface Sci 2024; 671:564-576. [PMID: 38820841 DOI: 10.1016/j.jcis.2024.05.199] [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: 04/14/2024] [Revised: 05/07/2024] [Accepted: 05/26/2024] [Indexed: 06/02/2024]
Abstract
The shuttling and sluggish conversion kinetics of lithium polysulfides (LiPSs) lead to poor cycling performance and low energy efficiency in lithium-sulfur batteries (LSBs). In this work, a hierarchically structured nanocomposite, synthesized through a surfactant-directed hydrothermal growth following dopamine-protected pyrolysis, serves as a bidirectional catalyst for LSBs. This nanocomposite comprises N-doped reduced graphene oxide (rGO) nanosheets anchored with uniformly distributed TiO2-x nanoparticles via interfacial N-Ti and C-Ti bonding, resulting in the formation of abundant 2D/0D Schottky heterojunctions (rGO/TiO2-x). Density functional theory (DFT) calculations and in situ Raman characterizations demonstrate that rGO/TiO2-x effectively inhibits the shuttling of LiPSs with enhanced redox kinetics, achieving high utilization of the sulfur cathode and improving the overall reversibility. A high areal capacity is attained at a high sulfur loading and a low electrolyte/sulfur ratio. The initial specific capacity reaches 1010 mA h g-1 at a current density of 0.2C (1C = 1675 mA g-1), and a retention of 86.4 % is attained over 100 cycles. A light-emitting diode (LED) screen using two LSBs with rGO/TiO2-x demonstrates their high potential for practical applications.
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Affiliation(s)
- Rongjie Zhe
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Haoyun Dou
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Xuanpan Xu
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Ziwei Zhao
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Long Chen
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Qingye Zhao
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China
| | - Xinjun Bao
- School of Textile and Fashion, Hunan Institute of Engineering, 411104 Xiangtan, China.
| | - Guozhong Cao
- Department of Materials Science and Engineering, University of Washington, Seattle, USA.
| | - Hong-En Wang
- College of Physics and Electronic Information, Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, 650500 Kunming, China; Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, 650500 Kunming, China.
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3
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Zhou M, Deng X, Zhang N, Chen B, Li G, Yang H. Boron dopant- and nitrogen defect-decorated C 3N 5 porous nanostructure as an efficient sulfur host for lithium-sulfur batteries. J Colloid Interface Sci 2024; 666:151-161. [PMID: 38593650 DOI: 10.1016/j.jcis.2024.04.023] [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: 01/27/2024] [Revised: 03/19/2024] [Accepted: 04/02/2024] [Indexed: 04/11/2024]
Abstract
Active site implantation and morphology manipulation are efficient protocols for boosting the electrochemical performance of carbon nitrides. As a promising sulfur host for lithium-sulfur batteries (LSBs), in this study, C3N5 porous nanostructure incorporated with both boron (B) atoms and nitrogen (N) defects was constructed (denoted as ND-B-C3N5) using a two-step strategy, i.e., pyrolysis of the mixture of 3-amino-1,2, 4-triazole and boric acid to obtain B-doped C3N5 porous nanostructure and then KOH etching under hydrothermal condition to generate N defects. The doped B atoms in the C3N5 porous nanostructure are in the form of B-N bonds and grafted B-O bonds. N defects are primarily created at the CN-C positions of the triazine unit, leaving behind some N vacancies and cyano groups. Benefiting from the involvement of B dopants and N defects, the optimized ND-B-C3N5-12 sample exhibits ameliorative conductivity, mass transport, lithium polysulfides (LiPSs) adsorption ability, diffusion of Li+ ions, Li2S deposition capacity, sulfur redox polarization, and a reversible solid-solid sulfur redox process. Consequently, the ND-B-C3N5-12/S cathode delivers accelerated redox performance of polysulfides for LSBs, revealing capacities of 1091 ± 44 and 753 ± 20 mAh/g at 0.2C for the initial and 300th cycles, respectively. The ND-B-C3N5-12/S cathode is also endowed with desired sulfur redox activity and stability at 2C for 1000 cycles, holding an initial discharging capacity of 788 ± 24 mAh/g and a low decay rate of 0.05 % per cycle.
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Affiliation(s)
- Minjie Zhou
- Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China; School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China
| | - Xianglin Deng
- Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China; School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China
| | - Na Zhang
- School of Physics and Electronic Science, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China
| | - Bing Chen
- Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China; School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China
| | - Gangyong Li
- Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China; School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China
| | - Haihua Yang
- Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China; School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, 414006, P.R. China.
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4
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Lang X, Wang T, Wang Z, Qu T, Li L, Yao C, Lai Q, Cai K. Ti x+ in-situ intercalation and interlayer modification via titanium foil/vanadium ion solution interface of VO 2.375 as sulfur-wrapped matrix enabling long-life lithium sulfur battery. J Colloid Interface Sci 2024; 659:560-568. [PMID: 38198933 DOI: 10.1016/j.jcis.2024.01.036] [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: 11/12/2023] [Revised: 12/31/2023] [Accepted: 01/05/2024] [Indexed: 01/12/2024]
Abstract
Lithium sulfur battery (LSB) has great potential as a promising next-generation energy storage system owing to ultra-high theoretical specific capacity and energy density. However, the polysulfide shuttle effect and slow redox kinetics are recognized the most stumbling blocks on the way of commercializing LSB. On this account, for the first time, we use Tix+ in-situ intercalation strategy via titanium foil/vanadium ion (V5+) solution interface to modify the layer of vanadium oxide for long cycle LSB. The inserted Tix+ strengthens interlayer interaction and enhances lithium-ion mobility rate. Meanwhile, based on density functional theory (DFT) calculation, the mixed valence of V5+/V4+ in the vanadium oxide structure reduces the stress and strain of lithium-ion intercalation through the interlayer support of titanium ions (Tix+). Also, Tix+ refines the structural stability of the sulfur wrapped composite matrix so as to facilitate the LiPSs transformation, and improve the electrochemical performances. Consequently, the Ti-VO2.375/S cathode delivers a lower capacity decay of 0.037 % per cycle over 1500 cycles with a stable coulombic efficiency around 100 %.
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Affiliation(s)
- Xiaoshi Lang
- Institute of Advanced Chemical Power Source, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Tan Wang
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhenhua Wang
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Tingting Qu
- Institute of Advanced Chemical Power Source, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China; MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
| | - Lan Li
- Institute of Advanced Chemical Power Source, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Chuangang Yao
- Institute of Advanced Chemical Power Source, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China
| | - Qinzhi Lai
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, Hebei Province, China
| | - Kedi Cai
- Institute of Advanced Chemical Power Source, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China.
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5
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Luo D, Yu H, Zeng L, Li X, He H, Zhang C. Phase-Stabilized Crystal Etching to Unlock An Oxygen-Vacancy-Rich Potassium Vanadate For Ultra-Fast Zn Storage. SMALL METHODS 2023:e2301083. [PMID: 37750470 DOI: 10.1002/smtd.202301083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/14/2023] [Indexed: 09/27/2023]
Abstract
Despite holding the advantages of high theoretical capacity and low cost, the practical application of layered-structured potassium vanadates in zinc ion batteries (ZIBs) has been staggered by the sluggish ion diffusion, low intrinsic electronic conductivity, and unstable crystal structure. Herein, for the first time, a phase stabilized crystal etching strategy is proposed to innovate an oxygen-vacancy-rich K0.486 V2 O5 nanorod composite (Ov-KVO@rGO) as a high-performance ZIB cathode. The in situ ascorbic acid assisted crystal etching process introduces abundant oxygen-vacancies into the K0.486 V2 O5 lattices, not only elaborately expanding the lattice spacing for faster ion diffusion and more active sites due to the weakened interlayer electrostatic interaction, but also enhancing the electronic conductivity by accumulating electrons around the vacancies, which is also evidenced by density functional theory calculations. Meanwhile, the encapsulating rGO layer ably stabilizes the K0.486 V2 O5 crystal phase otherwise is hard to endure subject to such a harsh chemical etching. As a result, the optimized Ov-KVO@rGO electrode delivers record-high rate capabilities with 462 and 272.39 mAh g-1 at 0.2 and 10 A g-1 , respectively, outperforming all previously reported potassium vanadate cathodes and most other vanadium-based materials. This work highlights a significant advancement of layer-structured vanadium based-materials towards practical application in ZIBs.
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Affiliation(s)
- Dan Luo
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Huaibo Yu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Li Zeng
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Xiaolong Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Hanna He
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Chuhong Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
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6
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Guo J, Jiang H, Wang K, Yu M, Jiang X, He G, Li X. Enhancing Electron Conductivity and Electron Density of Single Atom Based Core-Shell Nanoboxes for High Redox Activity in Lithium Sulfur Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301849. [PMID: 37093540 DOI: 10.1002/smll.202301849] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/28/2023] [Indexed: 05/03/2023]
Abstract
Herein, an integrated structure of single Fe atom doped core-shell carbon nanoboxes wrapped by self-growing carbon nanotubes (CNTs) is designed. Within the nanoboxes, the single Fe atom doped hollow cores are bonded to the shells via the carbon needles, which act as the highways for the electron transport between cores and shells. Moreover, the single Fe atom doped nanobox shells is further wrapped and connected by self-growing carbon nanotubes. Simultaneously, the needles and carbon nanotubes act as the highways for electron transport, which can improve the overall electron conductivity and electron density within the nanoboxes. Finite element analysis verifies the unique structure including both internal and external connections realize the integration of active sites in nano scale, and results in significant increase in electron transfer and the catalytic performance of Fe-N4 sites in both Li2 Sn lithiation and Li2 S delithiation. The Li-S batteries with the double-shelled single atom catalyst delivered the specific capacity of 702.2 mAh g-1 after 550 cycles at 1.0 C. The regional structure design and evaluation method provide a new strategy for the further development of single atom catalysts for more electrochemical processes.
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Affiliation(s)
- Jiao Guo
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Helong Jiang
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Kuandi Wang
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Miao Yu
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Xiaobin Jiang
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Gaohong He
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
| | - Xiangcun Li
- State Key Laboratory of Fine Chemicals, Chemical Engineering Department, Dalian University of Technology, Dalian, 116024, China
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7
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Cheng Z, Wang M, Dong Y, Han Y, Yan X, Xie L, Zheng X, Han L, Zhang J. Two-birds with one stone: Improving both cathode and anode electrochemical performances via two-dimensional Te-CoTe 2/rGO ultrathin nanosheets as sulfur hosts in lithium-sulfur batteries. J Colloid Interface Sci 2023; 649:86-96. [PMID: 37336157 DOI: 10.1016/j.jcis.2023.06.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/21/2023]
Abstract
A Te-doped CoTe2 film could be grown in situ on reduced graphene oxide (rGO) to develop a Te-CoTe2/rGO composite with an ultrathin layered structure, which has multiple protective effects on both the sulfur positive electrode and lithium negative electrode in lithium sulfur (Li-S) batteries. The Te-CoTe2/rGO composite as a sulfur host not only shows a strong adsorbing ability for lithium polysulfides (LiPSs) but can also accelerate the conversion reaction of active material sulfur during the charging/discharging process. More importantly, this host can turn the shuttle effect from an unfavorable factor to a favorable factor, which could improve the electrochemical performance of the lithium anode with uniform lithium plating/stripping resulting from the intermediate polytellurosulfide species (Li2TexSy), which could be generated on the cathode surface via Te reacting with soluble Li2Sn (4 ≤ n ≤ 8). As a result, the S@Te-CoTe2/rGO cathode shows a discharge capacity of 970.0 mA h g-1 in the first cycle at 1 C and retains a high capacity of 545.5 mA h g-1 after 1000 cycles, corresponding to a low capacity decay rate of only 0.043% per cycle. In addition, in situ X-ray diffraction (XRD) and in situ Raman were used to explore the sulfur conversion process. This study not only demonstrates that a two-dimensional (2D) ultrathin Te-CoTe2/rGO composite is successfully developed with multiple effects on Li-S batteries but also opens a new pathway for designing unique sulfur hosts to promote the electrochemical performance of Li-S batteries.
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Affiliation(s)
- Zihao Cheng
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Meili Wang
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Yutao Dong
- College of Science, Henan Agricultural University, Zhengzhou 450002, China.
| | - Yumiao Han
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xueli Yan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Lixia Xie
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Xin Zheng
- College of Science, Henan Agricultural University, Zhengzhou 450002, China
| | - 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
| | - Jianmin Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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8
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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: 11] [Impact Index Per Article: 5.5] [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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9
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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: 4.0] [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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10
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Wu J, Ye T, Wang Y, Yang P, Wang Q, Kuang W, Chen X, Duan G, Yu L, Jin Z, Qin J, Lei Y. Understanding the Catalytic Kinetics of Polysulfide Redox Reactions on Transition Metal Compounds in Li-S Batteries. ACS NANO 2022; 16:15734-15759. [PMID: 36223201 DOI: 10.1021/acsnano.2c08581] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Because of their high energy density, low cost, and environmental friendliness, lithium-sulfur (Li-S) batteries are one of the potential candidates for the next-generation energy-storage devices. However, they have been troubled by sluggish reaction kinetics for the insoluble Li2S product and capacity degradation because of the severe shuttle effect of polysulfides. These problems have been overcome by introducing transition metal compounds (TMCs) as catalysts into the interlayer of modified separator or sulfur host. This review first introduces the mechanism of sulfur redox reactions. The methods for studying TMC catalysts in Li-S batteries are provided. Then, the recent advances of TMCs (such as metal oxides, metal sulfides, metal selenides, metal nitrides, metal phosphides, metal carbides, metal borides, and heterostructures) as catalysts and some helpful design and modulation strategies in Li-S batteries are highlighted and summarized. At last, future opportunities toward TMC catalysts in Li-S batteries are presented.
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Affiliation(s)
- Jiao Wu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
- School of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Tong Ye
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
- School of Material and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Yuchao Wang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Peiyao Yang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Qichen Wang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Wenyu Kuang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Xiaoli Chen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Gaohan Duan
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Lingmin Yu
- School of Material and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Zhaoqing Jin
- Military Power Sources Research and Development Center, Research Institute of Chemical Defense, Beijing 100191, China
| | - Jiaqian Qin
- Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand
| | - Yongpeng Lei
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
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