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Li Y, Wang D, Liu Z, Liu X, Fu J, Zhang C, Zhang R, Wen G. Integrating highly active graphite nanosheets into microspheres for enhanced lithium storage properties of silicon. RSC Adv 2023; 13:4102-4112. [PMID: 36756567 PMCID: PMC9890553 DOI: 10.1039/d2ra06977f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/03/2023] [Indexed: 01/31/2023] Open
Abstract
Integrating silicon (Si) and graphitic carbon into micron-sized composites by spray-drying holds great potential in developing advanced anodes for high-energy-density lithium-ion batteries (LIBs). However, common graphite particles as graphitic carbon are always too large in three-dimensional size, resulting in inhomogeneous hybridization with nanosized Si (NSi); in addition, the rate capability of graphite is poor owing to sluggish intercalation kinetics. Herein, we integrated graphite nanosheets (GNs) with NSi to prepare porous NSi-GN-C microspheres by spray-drying and subsequent calcination with the assistance of glucose. Two-dimensional GNs with average thickness of ∼80 nm demonstrate superior lithium storage capacity, high conductivity, and flexibility, which could improve the electronic transfer kinetics and structural stability. Moreover, the porous structure buffers the volume expansion of Si during the lithiation process. The obtained NSi-GN-C microspheres manifest excellent electrochemical performance, including high initial coulombic efficiency of 85.9%, excellent rate capability of 94.4% capacity retention after 50 repeated high-rate tests, and good cyclic performance for 500 cycles at 1.0 A g-1. Kinetic analysis and in situ impedance spectra reveal dominant pseudocapacitive behavior with rapid and stable Li+ insertion/extraction processes. Ex situ morphology characterization demonstrates the ultra-stable integrated structure of the NSi-GN-C. The highly active GN demonstrates great potential to improve the lithium storage properties of Si, which provides new opportunity for constructing high-performance anodes for LIBs.
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Affiliation(s)
- Yan Li
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China
| | - Dong Wang
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China .,Shangdong Si-Nano Materials Technology Co., Ltd. Zibo 255000 P. R. China
| | - Zhichao Liu
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China
| | - Xianzheng Liu
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China
| | - Jie Fu
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China
| | - Chunjie Zhang
- School of Materials Science and Engineering, Harbin Institute of TechnologyHarbin 150001P. R. China
| | - Rui Zhang
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China
| | - Guangwu Wen
- School of Materials Science and Engineering, Shandong University of Technology Zibo 255000 P. R. China .,Shangdong Si-Nano Materials Technology Co., Ltd. Zibo 255000 P. R. China
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Lu L, Zhang B, Song J, Gao H, Wu Z, Shen H, Li Y, Lei W, Hao Q. Synthesis of MnO-Sn cubes embedding in nitrogen-doped carbon nanofibers with high lithium-ion storage performance. NANOTECHNOLOGY 2021; 33:115403. [PMID: 34874284 DOI: 10.1088/1361-6528/ac4064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/06/2021] [Indexed: 06/13/2023]
Abstract
In this paper, a carbon nanofiber (CNF) hybrid nanomaterial composed of MnO-Sn cubes embedding in nitrogen-doped CNF (MnO-Sn@CNF) is synthesized through electrospinning and post-thermal reduction processes. It exhibits good electrochemical lithium-ion storage performance as the anode, such as high reversible capacity, outstanding cycle performance (754 mAh g-1at 1 A g-1after 1000 cycles), and good rate capability (447 mAh g-1at 5 A g-1). The excellent electrochemical properties are derived from a unique nanostructure design. MnO-Sn@CNF has a three-dimensional conductive network with a stable core-shell structure, which improves the electrical conductivity and mechanical stability of the materials. In addition, the mesopores on the surface of carbon fibers can shorten the diffusion distance of lithium ions and promote the combination of active sites of the material with lithium ions. The internal MnO and Sn form a heterostructure, which enhances the stability of the physical structure of the electrode material. This material design method provides a reference strategy for the development of high-performance lithium-ion batteries anode.
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Affiliation(s)
- Longgang Lu
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Bin Zhang
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Juanjuan Song
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Haiwen Gao
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Zongdeng Wu
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Honglong Shen
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Yujunwen Li
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Wu Lei
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
| | - Qingli Hao
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, 210094, People's Republic of China
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Yao J, Zhang C, Yang G, Sha M, Dong Y, Fu Q, Wu Y, Zhao H, Wu M, Lei Y. Bismuth Nanoparticles Confined in Carbonaceous Nanospheres as Anodes for High-Performance Potassium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31766-31774. [PMID: 34197069 DOI: 10.1021/acsami.1c09286] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bismuth (Bi) has been considered as a promising alloying-type anode for potassium-ion batteries (PIBs), owing to its high theoretical capacity and suitable working voltage plateaus. However, Bi suffers from dramatic volume fluctuation and significant pulverization during the discharge/charge processes, resulting in fast capacity decay. Herein, we synthesize Bi nanoparticles confined in carbonaceous nanospheres (denoted as Bi@C) for PIBs by first utilizing BiOCl nanoflakes as a hard template and a Bi precursor. The construction of the loose structure buffers the mechanical stresses resulting from the volume expansion of Bi during the alloying reaction and avoids the fracture of the electrode structure, thus improving the cycling performance. Moreover, the carbonaceous layers increase the electronic conductivity and disperse the Bi nanoparticles, enhancing the charge transportation and ionic diffusion, which further promotes the rate capability of Bi@C. It exhibits a superior capacity (389 mAh g-1 at 100 mA g-1 after 100 cycles), excellent cycling stability (206 mAh g-1 at 500 mA g-1 over 1000 cycles), and an improved rate capability (182 mAh g-1 at 2.0 A g-1). This work provides a new structuring strategy in alloying materials for boosting reversible and stable potassium-ion storage.
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Affiliation(s)
- Jie Yao
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Chenglin Zhang
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Guowei Yang
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Mo Sha
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Yulian Dong
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Qun Fu
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yuhan Wu
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Huaping Zhao
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
| | - Minghong Wu
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yong Lei
- Institut für Physik & IMN MacroNano (ZIK), Technische Universität Ilmenau, Ilmenau 98693, Germany
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