High-performance Si-Containing anode materials in lithium-ion batteries: A superstructure of Si@Co-NC composite works effectively
文献类型：期刊论文
| 作者 | Li, Qiongguang3,4; Wang, Yanhong4,5; Yu, Jing4; Yuan, Menglei3,4; Tan, Qiangqiang4,5; Zhong, Ziyi1,6; Su, Fabing2,4,5 |
| 刊名 | Green Energy and Environment
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 7期号:1页码:116-129 |
| 关键词 | Expansion - Anodes - Lithium-ion batteries - Shells (structures) - Carbonization - Work function - Carbon - Nanoparticles - Silicon - Zeolites - Crystal atomic structure - Synthesis (chemical) |
| ISSN号 | 20962797 |
| DOI | 10.1016/j.gee.2020.08.007 |
| 英文摘要 | To mitigate the massive volume expansion of Si-based anode during the charge/discharge cycles, we synthesized a superstructure of Si@Co鈥揘C composite via the carbonization of zeolite imidazolate frameworks incorporated with Si nanoparticles. The Si@Co鈥揘C is comprised of Si-nanoparticle core and N-doped/Co-incorporated carbon shell, and there is void space between the core and the shell. When using as anode material for LIBs, Si@Co鈥揘C displayed a super performance with a charge/discharge capacity of 191.6/191.4 mA h g鈭? and a coulombic efficiency of 100.1% at 1000 mA g鈭? after 3000 cycles, and the capacity loss rate is 0.022% per cycle only. The excellent electrochemical property of Si@Co鈥揘C is because its electronic conductivity is enhanced by doping the carbon shell with N atoms and by incorporating with Co particles, and the pathway of lithium ions transmission is shortened by the hollow structure and abundant mesopores in the carbon shell. Also, the volume expansion of Si nanoparticles is well accommodated in the void space and suppressed by the carbon host matrix. This work shows that, through designing a superstructure for the anode materials, we can synergistically reduce the work function and introduce the confinement effect, thus significantly enhancing the anode materials' electrochemical performance in LIBs. 漏 2020 Institute of Process Engineering, Chinese Academy of Sciences |
| 学科主题 | Doping (Additives) |
| 项目编号 | We gratefully acknowledge the financial supports by the National Natural Science Foundation of China (No. 51772295 ), and Z. Zhong thanks the support of GTIIT for the collaboration, and the start-up fund provided by GTIIT. |
| 出版者 | KeAi Publishing Communications Ltd. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61308]  |
| 作者单位 | 1.Technion Israel Institute of Technology (IIT), Haifa; 32000, Israel 2.Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang; 110142, China 3.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 4.State Key Laboratory of Multiphase Complex Systems, CAS Key Laboratory of Green Process Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 5.Zhongke Langfang Institute of Process Engineering, Fenghua Road No 1, Langfang Economic & Technical Development Zone, Hebei Province; 065001, China 6.College of Engineering, Guangdong Technion Israel Institute of Technology (GTIIT), 241 Daxue Road, Jinping District, Shantou; 515063, China |
| 推荐引用方式 GB/T 7714 | Li, Qiongguang,Wang, Yanhong,Yu, Jing,et al. High-performance Si-Containing anode materials in lithium-ion batteries: A superstructure of Si@Co-NC composite works effectively[J]. Green Energy and Environment,2022,7(1):116-129. |
| APA | Li, Qiongguang.,Wang, Yanhong.,Yu, Jing.,Yuan, Menglei.,Tan, Qiangqiang.,...&Su, Fabing.(2022).High-performance Si-Containing anode materials in lithium-ion batteries: A superstructure of Si@Co-NC composite works effectively.Green Energy and Environment,7(1),116-129. |
| MLA | Li, Qiongguang,et al."High-performance Si-Containing anode materials in lithium-ion batteries: A superstructure of Si@Co-NC composite works effectively".Green Energy and Environment 7.1(2022):116-129. |
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来源：过程工程研究所
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