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Li Q, Zhao D, Sun S, Zhang X, Zhang Y, Li C, Cheng Y, Zhang J, Che R. Polyvinylpyrrolidone-assisted synthesis of ultrathin multi-nanolayered Cu 2Nb 34O 87-x for advanced Li + storage. J Colloid Interface Sci 2024; 657:716-727. [PMID: 38071820 DOI: 10.1016/j.jcis.2023.11.155] [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: 09/03/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 01/02/2024]
Abstract
The ultrathin multi-nanolayered structure with ultrathin monolayer thickness (<10 nm) and certain interlayer spacing can significantly shorten Li+ paths and alleviate the volume effect for Li+-storage materials. However, unlike layered materials such as MXene and MoS2, shear ReO3-type niobates have difficulty forming ultrathin multi-nanolayered structures due to their crystal structures, which still remains a challenge. Herein, by a polyvinylpyrrolidone (PVP)-assisted solvothermal method, we first synthesize ultrathin multi-nanolayered Cu2Nb34O87-x with oxygen vacancies composed of ultrathin nanolayers (2-10 nm in thickness) and interlayer spacing (1-5 nm). Oxygen vacancies can radically enhance the inherent electronic/ionic conductivity and Li+ diffusion coefficient of this material. The PVP-induced formation mechanism of this material is expounded in detail. The well-preserved ultrathin multi-nanolayered structure and excellent multi-electron electrochemical reversibility (Nb5+ ↔ Nb4+ ↔N b3+ and Cu2+ ↔ Cu+) of this material during cycling are fully verified. Based on an ultrathin multi-nanolayered structure and oxygen vacancies, this material as the anode of lithium-ion batteries is highly competitive among reported shear ReO3-type Cu-Nb-O anodes, displaying a high reversible capacity (315.3 mAh g-1 after 300 cycles at 1 C), durable cycling stability (85.7 % capacity retention after 1000 cycles at 10 C), and outstanding rate performance. Moreover, the application of this material to lithium-ion capacitors generates a large energy density (97.9 Wh kg-1 at 87.5 W kg-1) and a high power density (17,500 W kg-1 at 12.6 Wh kg-1), thus further indicating its fast faradaic pseudocapacitive behavior for practical applications. The results of this work indicate a breakthrough in synthesizing ultrathin multi-nanolayered shear ReO3-type niobates.
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Affiliation(s)
- Qing Li
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Xinyang Key Laboratory of Low-Carbon Energy Materials, Xinyang Normal University, Xinyang 464000, China
| | - Dan Zhao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Shijie Sun
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Xing Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Xinyang Key Laboratory of Low-Carbon Energy Materials, Xinyang Normal University, Xinyang 464000, China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Xinyang Key Laboratory of Low-Carbon Energy Materials, Xinyang Normal University, Xinyang 464000, China
| | - Chao Li
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Xinyang Key Laboratory of Low-Carbon Energy Materials, Xinyang Normal University, Xinyang 464000, China.
| | | | | | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai 200438, China; Zhejiang Laboratory, Hangzhou 311100, China.
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Hu F, Tang H, Wu F, Ding P, Zhang P, Sun W, Cai L, Fan B, Zhang R, Sun Z. Sn Whiskers from Ti 2 SnC Max Phase: Bridging Dual-Functionality in Electromagnetic Attenuation. SMALL METHODS 2024:e2301476. [PMID: 38183383 DOI: 10.1002/smtd.202301476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/07/2023] [Indexed: 01/08/2024]
Abstract
In the ever-evolving landscape of complex electromagnetic (EM) environments, the demand for EM-attenuating materials with multiple functionalities has grown. 1D metals, known for their high conductivity and ability to form networks that facilitate electron migration, stand out as promising candidates for EM attenuation. Presently, they find primary use in electromagnetic interference (EMI) shielding, but achieving a dual-purpose application for EMI shielding and microwave absorption (MA) remains a challenge. In this context, Sn whiskers derived from the Ti2 SnC MAX phase exhibit exceptional EMI shielding and MA properties. A minimum reflection loss of -44.82 dB is achievable at lower loading ratios, while higher loading ratios yield efficient EMI shielding effectiveness of 42.78 dB. These qualities result from a delicate balance between impedance matching and EM energy attenuation via adjustable conductive networks; and the enhanced interfacial polarization effect at the cylindrical heterogeneous interface between Sn and SnO2 , visually characterized through off-axis electron holography, also contributes to the impressive performance. Considering the compositional diversity of MAX phases and the scalable fabrication approach with environmental friendliness, this study provides a valuable pathway to multifunctional EM attenuating materials based on 1D metals.
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Affiliation(s)
- Feiyue Hu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Haifeng Tang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Fushuo Wu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Pei Ding
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Peigen Zhang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Wenwen Sun
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Longzhu Cai
- The State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Bingbing Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Rui Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - ZhengMing Sun
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
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Liu M, Zhao B, Pei K, Qian Y, Yang C, Liu Y, Cao H, Zhang J, Che R. An Ion-Engineering Strategy to Design Hollow FeCo/CoFe 2 O 4 Microspheres for High-Performance Microwave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300363. [PMID: 36929568 DOI: 10.1002/smll.202300363] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Although assembled hollow architectures have received considerable attention as lightweight functional materials, their uncontrollable self-aggregation and tedious synthetic methods hinder precise construction and modulation. Therefore, this study proposes a bi-ion synergistic regulation strategy to design assembled hollow-shaped cobalt spinel oxide microspheres. Dominated by the coordination-etching effects of F- and the hydrolysis-complex contributions of NH4 + , the unique construction is formed attributed to the dynamic cycles between metal complexes and precipitates. Meanwhile, their basic structures are perfectly retained after reduction treatment, enabling FeCo/CoFe2 O4 bimagnetic system to be obtained. Subsequently, in-depth analyses are conducted. Investigations reveal that multiscale magnetic coupling networks and enriched air-material heterointerfaces contribute to the remarkable magnetic-dielectric behavior, supported by the advanced off-axis electron holography technique. Consequently, the obtained FeCo/CoFe2 O4 composites exhibit excellent microwave absorption performances with minimal reflection losses (RLmin ) as high as -51.6 dB, an effective absorption bandwidth (EAB) of 4.7 GHz, and a matched thickness of 1.4 mm. Thus, this work provides an informative guide for rationally assembling building blocks into hollow architectures as advanced microwave absorbers through bi-ion and even multi-ion synergistic engineering mechanisms.
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Affiliation(s)
- Min Liu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Biao Zhao
- School of Microelectronics, Fudan University, Shanghai, 200433, P. R. China
| | - Ke Pei
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Yuetong Qian
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Chendi Yang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Yihao Liu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Hui Cao
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | | | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
- Zhejiang Laboratory, Hangzhou, 311100, P. R. China
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Qiao M, Tian Y, Wang J, Li X, He X, Lei X, Zhang Q, Ma M, Meng X. Magnetic-Field-Induced Vapor-Phase Polymerization to Achieve PEDOT-Decorated Porous Fe 3O 4 Particles as Excellent Microwave Absorbers. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mingtao Qiao
- College of Materials Science and Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi, P. R. China
| | - Yurui Tian
- School of Environmental and Municipal Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi, P. R. China
| | - Jiani Wang
- College of Materials Science and Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi, P. R. China
| | - Xiang Li
- College of Materials Science and Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi, P. R. China
| | - Xiaowei He
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, Shaanxi, P. R. China
| | - Xingfeng Lei
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, Shaanxi, P. R. China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, Shaanxi, P. R. China
| | - Mingliang Ma
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, P. R. China
| | - Xiaorong Meng
- School of Chemistry and Chemical Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, Shaanxi, P. R. China
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Qiao M, Tian Y, Li J, He X, Lei X, Zhang Q, Ma M, Meng X. Core-shell Fe 3O 4@SnO 2 nanochains toward the application of radar-infrared-visible compatible stealth. J Colloid Interface Sci 2021; 609:330-340. [PMID: 34896833 DOI: 10.1016/j.jcis.2021.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 10/19/2022]
Abstract
Multiband-compatible stealth materials play an increasingly crucial role in the field of modern military defence because they can enable the targeted objects to dodge advance detection technologies. In this study, chain-like Fe3O4@poly(ethyleneglycol dimethacrylate-co-methacrylic acid) nanocomposites were constructed as precursors through the magnetic field-induced distillation precipitation polymerisation. Then, the liquid-phase seed-mediated growth method, together with subsequent calcination, was applied to introduce SnO2 shells and remove poly(ethyleneglycol dimethacrylate-co-methacrylic acid) shells, which led to the successful preparation of innovative core-shell Fe3O4@SnO2 nanochains. The unique microstructure and appropriate components endowed nanochains with multiple functional applications. The minimum reflection loss value was approximately -39.4 dB (5.67 GHz), exhibiting excellent microwave absorption performance. The possible microwave absorption mechanisms involve interfacial polarisation, space charge polarisation, natural resonance, and multiple reflections and scatterings. The optimal infrared reflectivity reached 0.64, 0.51, and 0.37 in three atmospheric windows, indicating outstanding infrared stealth performance, which was attributed to the intense infrared reflection of SnO2 shells. Furthermore, three nanochains showed different colours (dark green, brick red, and bright orange), revealing selection absorption for visible light. This can be attributed to the combined effect of visible responses of SnO2 shells along with Bragg diffraction from the periodic arrangement of Fe3O4 particles in a single nanochain. Thus, core-shell Fe3O4@SnO2 nanochains can be considered as promising radar-infrared-visible compatible stealth materials. This discovery opens a new means to exploit multiband-compatible stealth materials.
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Affiliation(s)
- Mingtao Qiao
- College of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, PR China; School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, PR China.
| | - Yurui Tian
- School of Environmental and Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, PR China
| | - Jiaxin Li
- College of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, PR China
| | - Xiaowei He
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, PR China
| | - Xingfeng Lei
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, PR China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710129, PR China.
| | - Mingliang Ma
- School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033, PR China
| | - Xiaorong Meng
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, PR China.
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