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Zhu R, Li L, Wang Z, Zhang S, Dang J, Liu X, Wang H. Adjustable Dimensionality of Microaggregates of Silicon in Hollow Carbon Nanospheres: An Efficient Pathway for High-Performance Lithium-Ion Batteries. ACS Nano 2022; 16:1119-1133. [PMID: 34936340 DOI: 10.1021/acsnano.1c08866] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Silicon, as an anode candidate with great promise for next-generation lithium-ion batteries (LIBs), has drawn massive attention. However, the deficiencyies of tremendous volume change and intrinsic low electron/ion conductivity will hinder its further development. To cope with these bottlenecks, from the aspect of dimension design concept, the diverse dimensionality of microaggregates derived from cogenetic Si/C nano-building blocks was explored rather than the conventional strategies such as morphology control, structure design, and composition adjustment of Si/C. Herein, constructing silicon-carbon hybrid materials considering component dimensional variation and dimensional hybridization is beneficial to enhance lithium storage performance. Initiating from 0D silicon nanodots evenly immersed in the interior and skeleton of a hollow carbon shell (SHC) nanosphere, the 1D SHC nanospheres interconnected with nitrogen doping carbon necklace fiber, a 2D SHC nanospheres directional arranged plane, and a 3D SHC nanospheres self-aggregated microsphere will be elaborately and favorably designed and composed. Then, three different as-prepared dimensional materials deliver their inherent superiority in chemical, physical, and electronic properties containing 1D high aspect ratio, 2D fast electron/ion diffusion kinetics, and 3D efficient conductive networks, yielding effectively enhanced electrochemical performance, respectively.
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Affiliation(s)
- Ruiyu Zhu
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Lixiang Li
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Zehua Wang
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Shengqiang Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Jie Dang
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Xiaojie Liu
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
| | - Hui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule (Ministry of Education), College of Chemistry & Materials Science, Shaanxi Joint Lab of Graphene (NWU), Northwest University, Xi'an 710127, People's Republic of China
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