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Ye J, Wang Z, Liu Q, Wang Y, Han L, Kong Z, An J, Gao X, Li W, Chen Y, Song J. Rational design of a setaria-like NiTe 2/MoS 2 semi-coherent heterogeneous interface for enhancing diffusion kinetics in potassium-ion batteries. J Colloid Interface Sci 2024; 674:527-536. [PMID: 38943913 DOI: 10.1016/j.jcis.2024.06.193] [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: 06/23/2024] [Accepted: 06/25/2024] [Indexed: 07/01/2024]
Abstract
Constructing unique heterostructures is a highly effective approach for enhancing the K+ storage capability of transition metal selenides. Such structures generate internal electric fields that significantly reduce the charge transfer activation energy. However, achieving a flawless interfacial region that maintains the optimal energy level gradient and degree of lattice matching remains a considerable challenge. In this study, we synthesised Setaria-like NiTe2/MoS2@C heterogeneous interfaces at which three-dimensional MoS2 nanosheets are evenly embedded in NiTe2 nanorods to form stabilised heterojunctions. The NiTe2/MoS2 heterojunctions display distinctive electronic configurations and several active sites owing to their low lattice misfits (δ = 13 %), strong electric fields, and uniform carbon shells. A NiTe2/MoS2@C anode in a potassium-ion battery (KIB) exhibited an impressive reversible capacity of 125.8 mAh/g after 1000 cycles at a rate of 500 mA g-1 and a stable reversible capacity of 111.7 mAh/g even after 3000 cycles at 1000 mA g-1. Even the NiTe2/MoS2@C//perylene tetracarboxylic dianhydride full battery configuration maintained a significant reversible capacity of 92.4 mAh/g after 100 cycles at 200 mA g-1, highlighting its considerable potential for application in KIBs. Calculations further revealed that the well-designed NiTe2/MoS2 heterojunction significantly promotes K+ ion diffusion.
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Affiliation(s)
- Jiajia Ye
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China.
| | - Zifan Wang
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Qingli Liu
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Ying Wang
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Li Han
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Zhen Kong
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Juan An
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Xing Gao
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Wensi Li
- College of Biological and Chemical Engineering, Qilu Institute of Technology, Jinan 250200, PR China
| | - Yang Chen
- Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, Shandong 264005, PR China.
| | - Jibin Song
- College of Chemistry, Beijing University of Chemical Technology, Beijing 10010, PR China.
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2
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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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3
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Li Q, Yu D, Peng J, Zhang W, Huang J, Liang Z, Wang J, Lin Z, Xiong S, Wang J, Huang S. Efficient Polytelluride Anchoring for Ultralong-Life Potassium Storage: Combined Physical Barrier and Chemisorption in Nanogrid-in-Nanofiber. NANO-MICRO LETTERS 2024; 16:77. [PMID: 38190031 PMCID: PMC10774503 DOI: 10.1007/s40820-023-01318-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/05/2023] [Indexed: 01/09/2024]
Abstract
Metal tellurides (MTes) are highly attractive as promising anodes for high-performance potassium-ion batteries. The capacity attenuation of most reported MTe anodes is attributed to their poor electrical conductivity and large volume variation. The evolution mechanisms, dissolution properties, and corresponding manipulation strategies of intermediates (K-polytellurides, K-pTex) are rarely mentioned. Herein, we propose a novel structural engineering strategy to confine ultrafine CoTe2 nanodots in hierarchical nanogrid-in-nanofiber carbon substrates (CoTe2@NC@NSPCNFs) for smooth immobilization of K-pTex and highly reversible conversion of CoTe2 by manipulating the intense electrochemical reaction process. Various in situ/ex situ techniques and density functional theory calculations have been performed to clarify the formation, transformation, and dissolution of K-pTex (K5Te3 and K2Te), as well as verifying the robust physical barrier and the strong chemisorption of K5Te3 and K2Te on S, N co-doped dual-type carbon substrates. Additionally, the hierarchical nanogrid-in-nanofiber nanostructure increases the chemical anchoring sites for K-pTex, provides sufficient volume buffer space, and constructs highly interconnected conductive microcircuits, further propelling the battery reaction to new heights (3500 cycles at 2.0 A g-1). Furthermore, the full cells further demonstrate the potential for practical applications. This work provides new insights into manipulating K-pTex in the design of ultralong-cycling MTe anodes for advanced PIBs.
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Affiliation(s)
- Qinghua Li
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Dandan Yu
- College of Materials and Chemistry, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Jian Peng
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia
| | - Wei Zhang
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
| | - Jianlian Huang
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Zhixin Liang
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Junling Wang
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Zeyu Lin
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Shiyun Xiong
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Jiazhao Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia
| | - Shaoming Huang
- Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
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4
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Zhou Q, Yuan L, Li T, Qiao S, Ma M, Wang Y, Chong S. Boosting cobalt ditelluride quantum-rods anode materials for excellent potassium-ion storage via hierarchical physicochemical encapsulation. J Colloid Interface Sci 2023; 646:493-502. [PMID: 37209549 DOI: 10.1016/j.jcis.2023.05.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/07/2023] [Accepted: 05/11/2023] [Indexed: 05/22/2023]
Abstract
The exploration of anode materials that can store large-sized K-ion to solve the poor kinetics and large volume expansion issues has become the key scientific bottlenecks hindering the development of potassium-ion batteries (PIBs). Herein, ultrafine CoTe2 quantum rods physiochemically encapsulated by graphene and nitrogen-doped carbon (CoTe2@rGO@NC) are regarded as anode electrodes for PIBs. Dual physicochemical confinement and quantum size effect not only enhance electrochemical kinetics but also restrain large lattice stress during repeated K-ion insertion/extraction process. Superior electronic conductivity, K-ion adsorption, and diffusion ability can be acquired for CoTe2@rGO@NC, confirmed through first-principles calculations and kinetics study. K-ion insertion/extraction proceeds via a typical conversion mechanism relying on Co as the redox site, where the robust chemical bond of COCo plays an important role in maintaining the electrode stability. Accordingly, CoTe2@rGO@NC contributes a high initial capacity of 237.6 mAh·g-1 at 200 mA·g-1, a long lifetime over 500 cycles with low-capacity decay of 0.10% per cycle. This research will lay the materials science foundation for the construction of quantum-rod electrodes.
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Affiliation(s)
- Qianwen Zhou
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Lingling Yuan
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518063, PR China
| | - Ting Li
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518063, PR China
| | - Shuangyan Qiao
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Meng Ma
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Yikun Wang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Shaokun Chong
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518063, PR China.
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5
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Kumar V, Mishra RK, Choi GJ, Ryu JW, Kumar P, Gwag JS. Optical and dielectric response of two-dimensional WX 2 (X = Cl, O, S, Se, Te) monolayers: A comprehensive study based on density functional theory. LUMINESCENCE 2023. [PMID: 36740829 DOI: 10.1002/bio.4453] [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: 09/20/2022] [Revised: 01/17/2023] [Accepted: 02/01/2023] [Indexed: 02/07/2023]
Abstract
Here, we study the dielectric and optical properties of two-dimensional (2D) WX2 monolayers, where X is Cl, O, S, Se, and Te. First principle electronic band structure calculations reveal that all materials are direct band gap semiconductors except WO2 and WCl2 , which are found to be indirect band gap semiconducting 2D materials. The dielectric response of these materials is also systematically investigated. The obtained results suggest that these materials are suitable as dielectric materials to suppress unwanted signal noise. The optical properties of these 2D materials, such as absorption, reflection and extinction coefficients, refractive index, and optical conductivity, are also calculated from the dielectric function. It is found that these materials exhibit excellent optical response. The present electronic, dielectric, and optical findings indicate that WX2 monolayers have an opportunity in electronic, optical, and optoelectronic device applications.
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Affiliation(s)
- Vipin Kumar
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Rajneesh Kumar Mishra
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Gyu Jin Choi
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Jeong Won Ryu
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Pushpendra Kumar
- Department of Physics, Manipal University Jaipur, Jaipur, Rajasthan, 303007, India.,MSRC, Manipal University Jaipur, Jaipur, Rajasthan, 303007, India
| | - Jin Seog Gwag
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
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6
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Zhu Q, Li W, Wu J, Tian N, Li Y, Yang J, Liu B. Filling Selenium into Sulfur Vacancies in Ultrathin Tungsten Sulfide Nanosheets for Superior Potassium Storage. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51994-52006. [PMID: 36349939 DOI: 10.1021/acsami.2c16173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The development of WS2 as an anode for potassium-ion batteries (PIBs) is severely confined by the low K+ storage capacity and poor intrinsic electrical conductivity. Our previous study demonstrated that the creation of sulfur vacancies (VS) in WS2 can enhance its K+ storage capability. However, it is a big challenge to keep the stability of VS while reserving the excellent activity. Herein, we design Se-filled WS2 nanosheets with VS (VS-WS2-Se NS) for PIBs. The Se heteroatom filling into the VS can not only stabilize and activate them, rendering more active sites to adsorb K+, but also further enhance the electrical conductivity. Consequently, the VS-WS2-Se NS anode presents significantly promoted storage capacity and reaction kinetics, superior to the pristine WS2 and WS2 with only VS. Remarkably, the VS-WS2-Se NS anode exhibits the highest specific capacity of 363.9 mA h g-1 at 0.05 A g-1. Simultaneously, a high reversible capacity of 144.2 mA h g-1 after 100 cycles at 2.0 A g-1 is shown. Ex situ analyses demonstrated that the potassium storage mechanism involves the intercalation and conversion reaction between WS2 and K+. Moreover, DFT calculations revealed that the Se filling into VS can further enhance the electrical conductivity and reduce the K-insertion energy barriers of WS2 and thus account for the outstanding electrochemical performance. This study demonstrates that engineering the vacancies by the heteroatom filling strategy offers a novel and feasible route for designing high-performance electrode materials in various energy-storage systems.
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Affiliation(s)
- Qing Zhu
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
| | - Wenhao Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
| | - Jinxin Wu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
| | - Ningchen Tian
- Nation Quality Supervision and Inspection Center of Graphite Products, Chenzhou423000, P. R. China
| | - Yanwei Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
| | - Jianwen Yang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
| | - Botian Liu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin541004, P. R. China
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7
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Yoon J, Lim J, Shin M, Lee JY, Choi JW. Recent progress in nanomaterial-based bioelectronic devices for biocomputing system. Biosens Bioelectron 2022; 212:114427. [PMID: 35653852 DOI: 10.1016/j.bios.2022.114427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 11/25/2022]
Abstract
Bioelectronic devices have received the massive attention because of their huge potential to develop the core electronic components for biocomputing system. Up to now, numerous bioelectronic devices have been reported such as biomemory and biologic gate by employment of biomolecules including metalloproteins and nucleic acids. However, the intrinsic limitations of biomolecules such as instability and low signal production hinder the development of novel bioelectronic devices capable of performing various novel computing functions. As a way to overcome these limitations, nanomaterials have the great potential and wide applicability to grant and extend the electronic functions, and improve the inherent properties from biomolecules. Accordingly, lots of nanomaterials including the conductive metal, graphene, and transition metal dichalcogenide nanomaterials are being used to develop the remarkable functional bioelectronic devices like the multi-bit biomemory and resistive random-access biomemory. This review discusses the nanomaterial-based superb bioelectronic devices including the biomemory, biologic gates, and bioprocessors. In conclusion, this review will provide the interdisciplinary information about utilization of various novel nanomaterials applicable for biocomputing system.
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Affiliation(s)
- Jinho Yoon
- Department of Chemical & Biomolecular Engineering, Sogang University, Seoul, Republic of Korea; Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ, United States
| | - Joungpyo Lim
- Department of Chemical & Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Minkyu Shin
- Department of Chemical & Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Ji-Young Lee
- Department of Chemical & Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Jeong-Woo Choi
- Department of Chemical & Biomolecular Engineering, Sogang University, Seoul, Republic of Korea.
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8
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Soares DM, Singh G. Weyl semimetal orthorhombic Td-WTe 2as an electrode material for sodium- and potassium-ion batteries. NANOTECHNOLOGY 2021; 32:505402. [PMID: 34488215 DOI: 10.1088/1361-6528/ac23f3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Alkali metals such as sodium and potassium have become promising candidates for the next generation of monovalent-ion batteries. However, a challenge for these battery technologies lies in the development of electrode materials that deliver high capacity and stable performance even at high cycling currents. Here we study orthorhombic tungsten ditelluride or Td-WTe2as an electrode material for sodium- (SIB) and potassium-ion batteries (KIB) in propylene carbonate (PC) based electrolyte. Results show that despite larger Shannon's radius of potassium-ions and their sluggish diffusion in Td-WTe2due to higher overpotential, at 100 mA.g-1KIB-half cells showed higher cycling stability and low capacity decay of 4% versus 16% compared to SIB-half cells. Likewise, in a rate capability test at 61stcycle (at 50 mA.g-1), the KIB-half cells yielded charge capacity of 172 mAh.g-1versus 137 mAh.g-1of SIB-half cells. The superior electrochemical performance of Td-WTe2electrode material in KIB-half cells is explained based on the concept of Stokes' radius-smaller desolvation activation energy resulted in higher mobility of potassium-ions in PC-based electrolyte. In addition, the likely mechanisms of electrochemical insertion and extraction of Na- and K-ions in Td-WTe2are also discussed.
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Affiliation(s)
- Davi Marcelo Soares
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, 66506, United States of America
| | - Gurpreet Singh
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, 66506, United States of America
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9
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Construction of CoS2 nanoparticles embedded in well-structured carbon nanocubes for high-performance potassium-ion half/full batteries. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1057-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Wang M, Xu S, Cha JJ. Revisiting Intercalation‐Induced Phase Transitions in 2D Group VI Transition Metal Dichalcogenides. ADVANCED ENERGY AND SUSTAINABILITY RESEARCH 2021. [DOI: 10.1002/aesr.202100027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mengjing Wang
- Department of Mechanical Engineering and Materials Science Yale University 15 Prospect St New Haven CT 06511 USA
| | - Shiyu Xu
- Department of Mechanical Engineering and Materials Science Yale University 15 Prospect St New Haven CT 06511 USA
| | - Judy J. Cha
- Department of Mechanical Engineering and Materials Science Yale University 15 Prospect St New Haven CT 06511 USA
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Chong S, Wei X, Wu Y, Sun L, Shu C, Lu Q, Hu Y, Cao G, Huang W. Expanded MoSe 2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13158-13169. [PMID: 33719396 DOI: 10.1021/acsami.0c22430] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The cost-efficient and plentiful Na and K resources motivate the research on ideal electrodes for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Here, MoSe2 nanosheets perpendicularly anchored on reduced graphene oxide (rGO) are studied as an electrode for SIBs and PIBs. Not only does the graphene network serves as a nucleation substrate for suppressing the agglomeration of MoSe2 nanosheets to eliminate the electrode fracture but also facilitates the electrochemical kinetics process and provides a buffer zone to tolerate the large strain. An expanded interplanar spacing of 7.9 Å is conducive to fast alkaline ion diffusion, and the formed chemical bondings (C-Mo and C-O-Mo) promote the structure integrity and the charge transfer kinetics. Consequently, MoSe2@5%rGO exhibits a reversible specific capacity of 458.3 mAh·g-1 at 100 mA·g-1, great cyclability with a retention of 383.6 mAh·g-1 over 50 cycles, and excellent rate capability (251.3 mAh·g-1 at 5 A·g-1) for SIBs. For PIBs, a high first specific capacity of 365.5 mAh·g-1 at 100 mA·g-1 with a low capacity fading of 51.5 mAh·g-1 upon 50 cycles and satisfactory rate property are acquired for MoSe2@10%rGO composite. Ex situ measurements validate that the discharge products are Na2Se for SIBs and K5Se3 for PIBs, and robust chemical bonds boost the structure stability for Na- and K-ion storage. The full batteries are successfully fabricated to verify the practical feasibility of MoSe2@5%rGO composite.
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Affiliation(s)
- Shaokun Chong
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Xuedong Wei
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemistry & Material Science, Shanxi Normal University, Linfen 041004, PR China
| | - Yifang Wu
- Northwest Institute for Nonferrous Metal Research, Xi'an 710016, PR China
| | - Lan Sun
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Chengyong Shu
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Qianbo Lu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Yingzhen Hu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Guozhong Cao
- Department of Materials and Engineering, University of Washington, Seattle, Washington 98195-2120, United States
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China
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