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Niu X, Feng Y. First-principles study on the effect of torsional deformation on WSe 2 as an anode material for calcium ion batteries. J Mol Model 2024; 30:211. [PMID: 38877348 DOI: 10.1007/s00894-024-06011-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Accepted: 06/07/2024] [Indexed: 06/16/2024]
Abstract
CONTEXT In this paper, the effects of torsional deformation on the electronic properties of intrinsic WSe2 system and Ca-adsorbed WSe2 system were systematically studied by first-principles method. The results show that Ca can be stably adsorbed on the vacancy (H site) of WSe2 surface in all deformation systems, and the adsorption energy of the system without deformation is the highest. Intrinsic WSe2 is a semiconductor with a direct band gap of 1.53 eV. The torsional deformation makes WSe2 change from a direct band gap semiconductor to an indirect band gap semiconductor and finally to a metal property. The adsorption of Ca makes the conduction band of WSe2 move down and increases the number of peaks in the conduction band region. The new density of state peaks are mainly derived from the contribution of W-d, Se-p, and d orbitals of adsorbed atoms in each adsorption system. Mulliken charge analysis shows that Ca transfers most of the valence electrons to the substrate, and the torsional deformation changes the amount of transferred charge. The twist deformation reduces the diffusion barrier of Ca on WSe2 surface from 0.20 to 0.14 eV. The above results provide a basis for the improved application of WSe2 in ion batteries. METHODS In this study, all the first-principles calculations are based on Materials Studio 8.0 software package. The generalized gradient approximation (GGA) functional Perdew-Burke-Ernzerhof (PBE) is used for the electron exchange correlation interactions in all systems. The optimization algorithm uses Broyden-Fletcher-Goldfarb-Shanno (BFGS) to optimize the model structure and calculate the energy. The measured cutoff energy is optimized to 450 eV, and the radius of the vacuum layer in the Z-axis direction is 20 Å. The K-point of 7 × 7 × 1 is selected by Monkhorst-Pack method. The structural optimization criterion is selected, the convergence radius of the force is 0.01 eV/Å, and the displacement radius between atoms is within 0.001 Å distance. The energy convergence radius of each atom is less than 1.0 × 10-6 eV/atom.
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Affiliation(s)
- Xiaowei Niu
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China.
| | - Yanyan Feng
- Henan Industry and Trade Vocational College, Zhengzhou, 451191, China
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Liu H, Feng Y, Zhang Z. Theoretical study on the effect of torsional deformation on WTe 2 as a cathode material for calcium ion batteries. J Mol Model 2024; 30:148. [PMID: 38662260 DOI: 10.1007/s00894-024-05955-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
CONTEXT In this study, the electronic structure and diffusion barrier of the Ca-adsorbed WTe2 system under different torsion angles were calculated based on the first-principles method. The results show that the structure and properties of the pure WTe2 system and Ca-adsorbed WTe2 system are affected by torsional deformation. When the torsion angle is 6°, the intrinsic WTe2 changes from a direct band gap to an indirect band gap. The torsional deformation does not change the metallicity of the Ca-adsorbed WTe2 system. The Ca-d state electrons contribute to the electron density of WTe2. The calculation of the diffusion barrier shows that the torsion deformation promotes the diffusion of calcium on the surface of WTe2. This study provides a theoretical basis for the regulation of electrode materials. METHODS In this study, Materials Studio 8.0 software was used to construct the WTe2 model and Ca-adsorbed WTe2 model, and CASTEP module was used for first-principles calculation.
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Affiliation(s)
- Hui Liu
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China
| | - Yanyan Feng
- Henan Industry and Trade Vocational College, Zhengzhou, 451191, China
| | - Zhichao Zhang
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China.
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Fu T, Feng Y, Gao W, Li X. First-principles calculations of bulk XTe 2 (X = Mo, W) as anode materials for Ca ion battery. J Mol Model 2024; 30:34. [PMID: 38206361 DOI: 10.1007/s00894-024-05829-z] [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: 12/12/2023] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
CONTEXT Transition metal chalcogenides are excellent anode materials for calcium ion batteries (CIBs). In this study, the structural stability, electronic structure, and diffusion barrier of bulk XTe2 (X = Mo, W) were studied by first-principles calculations within the framework of density functional theory. The density of states analysis shows the metal behavior of XTe2 (X = Mo, W) during calcification. The voltage ranges of CayMoTe2 and CayWTe2 are 1.53-0.45 V and 1.48-0.41 V (y = 0-5), respectively. The diffusion barrier of Ca+ through XTe2 indicates that the compressive strain promotes the diffusion of calcium through XTe2. XTe2 is considered to be a promising electrode material for CIBs. METHODS In this paper, the transition metal chalcogenides model is constructed by Material Studio 8.0, and the first-principles calculation is carried out by CASTEP module.
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Affiliation(s)
- Tao Fu
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China
| | - Yuan Feng
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China
| | - Wei Gao
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China
| | - Xian Li
- Zhengzhou Railway Vocational Technical College, Zhengzhou, 450052, China.
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Yang X, Miao Z, Zhong Q, Zhang X, Zhang Z, Yang Z, Yu J. ZnS/SnS 2 Heterostructures Encapsulated in N-Doped Carbon Nanofibers for High-Performance Alkali Metal-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46881-46894. [PMID: 37769236 DOI: 10.1021/acsami.3c09151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Heterogeneous composite ZnS/SnS2 is designed to meet various requirements for alkali metal-ion batteries. The composite is prepared using an electrostatic spinning method and encapsulated in N-doped carbon fibers after high-temperature vulcanization. The special structure of the composite provides a dependable interconnection and fast conductive network for alkali metal ions. The conductive carbon network shortens the diffusion path and greatly improves the migration efficiency of the alkali metal ions in the electrode. As expected, when the current density is 0.1 A g-1, the ZnS/SnS2@NCNFs maintain a high discharge capacity of more than 1437.5, 1321.2, and 861.6 mA h g-1 for lithium-ion, sodium-ion, and potassium-ion batteries, respectively. What is more, a full cell using a prelithiated composite anode and a LiFePO4 cathode is tested and shows excellent electrochemical performance. This work provides new perspectives for the development of novel anodes that can efficiently store alkali metal ions, as well as for the fine-structure design of materials.
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Affiliation(s)
- Xiao Yang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Zhengrui Miao
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Qi Zhong
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Xiangxiang Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Ze Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Zhenyu Yang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
| | - Ji Yu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, P. R. China
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Wu H, Wang K, Li M, Wang Y, Zhu Z, Du Z, Ai W, He S, Yuan R, Wang B, He P, Wu J. Double-Walled NiTeSe-NiSe 2 Nanotubes Anode for Stable and High-Rate Sodium-Ion Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300162. [PMID: 36866502 DOI: 10.1002/smll.202300162] [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: 01/06/2023] [Revised: 02/09/2023] [Indexed: 06/02/2023]
Abstract
Electrodes made of composites with heterogeneous structure hold great potential for boosting ionic and charge transfer and accelerating electrochemical reaction kinetics. Herein, hierarchical and porous double-walled NiTeSe-NiSe2 nanotubes are synthesized by a hydrothermal process assisted in situ selenization. Impressively, the nanotubes have abundant pores and multiple active sites, which shorten the ion diffusion length, decrease Na+ diffusion barriers, and increase the capacitance contribution ratio of the material at a high rate. Consequently, the anode shows a satisfactory initial capacity (582.5 mA h g-1 at 0.5 A g-1 ), a high-rate capability, and long cycling stability (1400 cycles, 398.6 mAh g-1 at 10 A g-1 , 90.5% capacity retention). Moreover, the sodiation process of NiTeSe-NiSe2 double-walled nanotubes and underlying mechanism of the enhanced performance are revealed by in situ and ex situ transmission electron microscopy and theoretical calculations.
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Affiliation(s)
- Han Wu
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Ke Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Mengjun Li
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Yutao Wang
- Nanostructure Research Center, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Zhu Zhu
- Nanostructure Research Center, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Zhuzhu Du
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Wei Ai
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Song He
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Ruilong Yuan
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Binwu Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Pan He
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
- Key laboratory of Flexible Electronics of Zhejiang Province, Ningbo institute of Northwestern Polytechnical University, 218 Qingyi Road, Ningbo, 315103, P. R. China
| | - Jinsong Wu
- Nanostructure Research Center, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
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