中文版 | English
Title

A Hierarchical Si/C Nanocomposite of Stable Conductive Network Formed Through Thermal Phase Separation of Asphaltenes for High-Performance Li-Ion Batteries

Author
Corresponding AuthorYang, Fan; Xu, Zhenghe
Publication Years
2022-08-01
DOI
Source Title
ISSN
1613-6810
EISSN
1613-6829
Volume18
Abstract
Silicon is one of the most promising anode materials for lithium-ion batteries. However, the huge volume change of silicon during lithiation/delithiation triggers continuous growth of solid-electrolyte interphase, loss of conductive contacts and structural collapse of the electrode, which causes a rapid deterioration of battery capacities. Inspired by the polyaromatic molecular nature and phase separation of asphaltenes in bitumen during thermal cracking, a hierarchical Si/C nanocomposite of robust carbon coatings and a firmly connected carbon framework on the silicon surface is synthesized by controlling the concentration of asphaltenes as carbon source and hence desired phase separation during the subsequent carbonization. The electrode made using this special Si/C nanocomposite exhibits a high reversible capacity of 1149 mAh g(-1) after 600 cycles with a capacity retention of 98.5% and the operation ability at a high mass loading over 10 mg cm(-2) or an area capacity of 23.8 mAh cm(-2), which represents one of the highest area capacities reported in open literature but with much more stable and prolonged operations. This simple and efficient strategy is easy to scale up for commercial production to meet the rapid growth of the electric vehicle industry.
Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
National Natural Science Foundation of China[21808101] ; Leading Talents of Guangdong Province Program[2016LJ06C536] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Research Foundation for Advanced Talents[20200207] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001]
WOS Research Area
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS Subject
Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS Accession No
WOS:000836902600001
Publisher
EI Accession Number
20223412622553
EI Keywords
Anodes ; Carbon ; Carbonization ; Commercial vehicles ; Deterioration ; Lithium-ion batteries ; Nanocomposites ; Silicon ; Solid electrolytes
ESI Classification Code
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Automobiles:662.1 ; Heavy Duty Motor Vehicles:663.1 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Materials Science:951
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:4
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/375576
DepartmentDepartment of Materials Science and Engineering
Affiliation
1.Southern Univ Sci & Technol, Shenzhen Key Lab Interfacial Sci & Engn Mat, Key Univ Lab Highly Efficient Utilizat Solar Ener, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Jiaxing Res Inst, Adv Mat Innovat Ctr, Jiaxing 314031, Peoples R China
First Author AffilicationDepartment of Materials Science and Engineering
Corresponding Author AffilicationDepartment of Materials Science and Engineering;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Materials Science and Engineering
Recommended Citation
GB/T 7714
Tan, Wen,Wang, Lina,Lu, Zhouguang,et al. A Hierarchical Si/C Nanocomposite of Stable Conductive Network Formed Through Thermal Phase Separation of Asphaltenes for High-Performance Li-Ion Batteries[J]. Small,2022,18.
APA
Tan, Wen,Wang, Lina,Lu, Zhouguang,Yang, Fan,&Xu, Zhenghe.(2022).A Hierarchical Si/C Nanocomposite of Stable Conductive Network Formed Through Thermal Phase Separation of Asphaltenes for High-Performance Li-Ion Batteries.Small,18.
MLA
Tan, Wen,et al."A Hierarchical Si/C Nanocomposite of Stable Conductive Network Formed Through Thermal Phase Separation of Asphaltenes for High-Performance Li-Ion Batteries".Small 18(2022).
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