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Precision integration of uniform molecular-level carbon into porous silica framework for synergistic electrochemical activation in high-performance lithium–ion batteriesoa mark
  • Oh, Seungbae ;
  • Dong, Xue ;
  • Woo, Chaeheon ;
  • Zhang, Xiaojie ;
  • Kim, Yeongjin ;
  • Choi, Kyung Hwan ;
  • Lee, Bom ;
  • Kim, Ji Hee ;
  • Kang, Jinsu ;
  • Bang, Hyeon Seok ;
  • Jeon, Jiho ;
  • Oh, Hyung Suk ;
  • Yu, Hak Ki ;
  • Mun, Junyoung ;
  • Choi, Jae Young
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Publication Year
2024-06-01
Journal
EcoMat
Publisher
John Wiley and Sons Inc
Citation
EcoMat, Vol.6 No.6
Keyword
anodeLi–ion batteryporous materialsSiO2@carbon nanoparticles
All Science Classification Codes (ASJC)
Chemistry (miscellaneous)Materials Science (miscellaneous)Physical and Theoretical Chemistry
Abstract
The development of advanced anode materials for lithium-ion batteries that can provide high specific capacity and stable cycle performance is of paramount importance. This study presents a novel approach for synthesizing molecular-level homogeneous carbon integration to porous SiO2 nanoparticles (SiO2@C NPs) tailored to enhance their electrochemical activities for lithium-ion battery anode. By varying the ratio of the precursors for sol–gel reaction of (phenyltrimethoxysilane (PTMS) and tetraethoxysilane (TEOS)), the carbon content and porosity within SiO2@C NPs is precisely controlled. With a 4:6 PTMS and TEOS ratio, the SiO2@C NPs exhibit a highly mesoporous structure with thin carbon and the partially reduced SiOx phases, which balances ion and charge transfer for electrochemical activation of SiO2@C NPs resulting remarkable capacity and cycle performance. This study offers a novel strategy for preparing affordable high capacity SiO2-based advanced anode materials with enhanced electrochemical performances. (Figure presented.).
ISSN
2567-3173
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/34269
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85195632971&origin=inward
DOI
https://doi.org/10.1002/eom2.12469
Journal URL
onlinelibrary.wiley.com/journal/25673173
Type
Article
Funding
This work was supported by the Carbon to X Project (2023M3H7A1078671) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea, and the Technology Innovation Program (20024822, Development of low dielectric constant hybrid substrate for 6G terahertz communication) funded by the Ministry of Trade, Industry, and Energy (MOTIE, Korea).
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Yu, Hak Ki류학기
Department of Materials Science Engineering
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