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Xia X, Zhang Z, He J, Wang D, Zhao W, Wang Q. Synthesis of Organopolysilazane Nanoparticles as Lithium-Ion Battery Anodes with Superior Electrochemical Performance via the Two-Step Stöber Method. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19507-19518. [PMID: 38569131 DOI: 10.1021/acsami.4c00536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
The Stöber method, a widely utilized sol-gel technique, stands as a green and reliable approach for preparing nanostructures on a large scale. In this study, we employed an enhanced Stöber method to synthesize organopolysilazane nanoparticles (OPSZ NPs), utilizing polysilazane oligomers as the primary precursor material and ammonia as the catalytic agent. By implementing a two-step addition process, control over crucial parameters facilitated the regulation of the nanoparticle size. Generally, maintaining relatively low concentrations of organopolysilazane and catalyst while adjusting the water/acetonitrile ratio can effectively enhance the surface energy of the organopolysilazane, resulting in the uniform formation of small spherical particles. The average particle size of the synthesized OPSZ NPs is about 140 nm, which were monodispersed and characterized by scanning electron microscopy, transmission electron microscopy, and dynamic light scattering. Furthermore, the composition of OPSZ NPs after pyrolysis was confirmed as SiC2.054N0.206O1.631 with 5.44 wt % free carbon structure by X-ray diffraction and energy-dispersive X-ray spectroscopy. Notably, the electrochemical performance assessment of SiCNO NPs as potential electrode materials for lithium-ion batteries exhibited promising outcomes. Specifically, at 1 A g-1 current density, the specific capacity is 585.45 mA h g-1 after 400 cycles, and the minimum capacity attenuation per cycle is only 0.1076 mA h g-1 (0.0172% of the original capacity), which indicates excellent energy storage capacity and cycle stability. In summary, this research contributes to the development of advanced anode materials for next-generation energy storage systems, marking a stride toward sustainable energy solutions.
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Affiliation(s)
- Xin Xia
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
| | - Zhenpeng Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
| | - Jianjiang He
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
| | - Deshuo Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
| | - Wei Zhao
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
| | - Qingfu Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao 266042, China
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Wu P, Zheng Z, Shi B, Liu C, Chen S, Xu B, Liu A. SiOC Phase Control and Carbon Nanoribbon Growth by Introducing Oxygen at Atom Level for Lithium-Ion Batteries. SMALL METHODS 2022; 6:e2201299. [PMID: 36333213 DOI: 10.1002/smtd.202201299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Poor intrinsic conductivity and the presence of irreversible lithiation phase affect the electrochemical performance of silicon oxycarbide anode materials. Even though it can be improved by increasing free carbon content or composition, scarification of reversible capacity and initial Coulombic efficiency (ICE) remain as challenge. Here, polycarbosilane (PCS) with alternating distribution of silicon and carbon atoms is employed as precursor of SiOC ceramics. Air oxidation cross-linking is used to regulate the content of oxygen and carbon elements in PCS at atom level, so as to explore a solution to improve the intrinsic conductivity and reversible lithium phase content of SiOC ceramics. This strategy provides extremely excellent rate capability, areal/volumetric capacity, and ICE. This is also the first concept for feasible precursor structure design to control the SiOC glass phase and regulate the growth of C nanoribbon that can improve the intrinsic conductivity and reversible capacity of SiOC ceramic anode materials.
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Affiliation(s)
- Pengfei Wu
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shenzhen Research Institute, Xiamen University, Shenzhen, 518000, P. R. China
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 001-0021, Japan
| | - Zhicheng Zheng
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shenzhen Research Institute, Xiamen University, Shenzhen, 518000, P. R. China
| | - Benyang Shi
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shenzhen Research Institute, Xiamen University, Shenzhen, 518000, P. R. China
| | - Chao Liu
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Shaohong Chen
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shenzhen Research Institute, Xiamen University, Shenzhen, 518000, P. R. China
| | - Binbin Xu
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030000, P. R. China
| | - Anhua Liu
- Key Laboratory of High-Performance Ceramic Fibers of Ministry of Education, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shenzhen Research Institute, Xiamen University, Shenzhen, 518000, P. R. China
- Fujian Key Laboratory of Advanced Materials, Xiamen University, Xiamen, 361005, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030000, P. R. China
- College of Chemistry & Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
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Chen J, Ding J, Shan J, Wang T, Zhou R, Zhuang Q, Kong J. Recent advances in precursor-derived ceramics integrated with two-dimensional materials. Phys Chem Chem Phys 2022; 24:24677-24689. [DOI: 10.1039/d2cp02678c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This review focused on the recent advances in precursor-derived ceramics integrated with two-dimensional materials. Their fabrication methods, structures and applications were discussed in detail and the perspectives in this field were presented.
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Affiliation(s)
- Jianxin Chen
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jichao Ding
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jiahui Shan
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Tianyi Wang
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Rui Zhou
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Qiang Zhuang
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jie Kong
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
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