Engineering Nano-Sized Silicon Anodes with Conductive Networks toward a High Average Coulombic Efficiency of 90.2% via Plasma-Assisted Milling
By
Zuo, YZ (Zuo, Yezhan) [1] ; Xiong, XY (Xiong, Xingyu) [1] ; Yang, ZZ (Yang, Zhenzhong) [1] ; Sang, YH (Sang, Yihui) [1] ; Zhang, HL (Zhang, Haolin) [1] ; Meng, FB (Meng, Fanbo) [2] ; Hu, RZ (Hu, Renzong) [1]
(provided by Clarivate)
Source
NANOMATERIALS
Volume14Issue8
DOI10.3390/nano14080660
Article Number
660
Published
APR 2024
Indexed
2024-05-11
Document Type
Article
Abstract
Si-based anode is considered one of the ideal anodes for high energy density lithium-ion batteries due to its high theoretical capacity of 4200 mAh g(-1). To accelerate the commercial progress of Si material, the multi-issue of extreme volume expansion and low intrinsic electronic conductivity needs to be settled. Herein, a series of nano-sized Si particles with conductive networks are synthesized via the dielectric barrier discharge plasma (DBDP) assisted milling. The p-milling method can effectively refine the particle sizes of pristine Si without destroying its crystal structure, resulting in large Brunauer-Emmett-Teller (BET) values with more active sites for Li+ ions. Due to their unique structure and flexibility, CNTs can be uniformly distributed among the Si particles and the prepared Si electrodes exhibit better structural stability during the continuous lithiation/de-lithiation process. Moreover, the CNT network accelerates the transport of ions and electrons in the Si particles. As a result, the nano-sized Si anodes with CNTs conductive network can deliver an extremely high average initial Coulombic efficiency (ICE) reach of 90.2% with enhanced cyclic property and rate capability. The C-PMSi-50:1 anode presents 615 mAh g(-1) after 100 cycles and 979 mAh g(-1) under the current density of 5 A g(-1). Moreover, the manufactured Si||LiNi0.8Co0.1Mn0.1O2 pouch cell maintains a high ICE of >85%. This work may supply a new insight for designing the nano-sized Si and further promoting its commercial applications.
Keywords
Author Keywordsplasma-assisted millinginitial coulombic efficiencysilicon anodestructural engineeringlithium-ion battery
Keywords PlusBATTERYELECTRODES
Author Information
Corresponding Address
Hu, Renzong
(corresponding author)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
Affiliation
South China University of Technology
South China University of Technology Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials
South China University of Technology School of Materials Science and Engineering
Corresponding Address
Meng, Fanbo
(corresponding author)
Nanjing Normal Univ, Sch Energy & Mech Engn, Nanjing 210023, Peoples R China
E-mail Addresses
msfanbomeng@njnu.edu.cn
Addresses
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
2 Nanjing Normal Univ, Sch Energy & Mech Engn, Nanjing 210023, Peoples R China
E-mail Addresses
msfanbomeng@njnu.edu.cnmsrenzonghu@scut.edu.cn
Categories/ Classification
Research AreasChemistryScience & Technology - Other TopicsMaterials SciencePhysics
Citation Topics
2 Chemistry
2.62 Electrochemistry
2.62.138 Lithium-Ion Battery
Sustainable Development Goals
11 Sustainable Cities and Communities
Web of Science Categories
Chemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, Applied