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Precision Integration of Uniform Molecular-Level Carbon into Porous Silica Framework for Synergistic Electrochemical Activation in High-Performance Lithium-Ion Batteries
  • +12
  • Seungbae Oh,
  • Xue Dong,
  • Chaeheon Woo,
  • Xiaojie Zhang,
  • Yeongjin Kim,
  • Kyung Hwan Choi,
  • Bom Lee,
  • Ji-Hee Kim,
  • Jinsu Kang,
  • Hyeon-Seok Bang,
  • Jiho Jeon,
  • Hak Ki Yu,
  • Junyoung Mun,
  • Jae-Young Choi,
  • Hyung-Suk Oh
Seungbae Oh
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Xue Dong
Sungkyunkwan University Advanced Institute of Nano Technology
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Chaeheon Woo
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Xiaojie Zhang
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Yeongjin Kim
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Kyung Hwan Choi
Sungkyunkwan University Advanced Institute of Nano Technology
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Bom Lee
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Ji-Hee Kim
Department of Physics,Pusan National University
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Jinsu Kang
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Hyeon-Seok Bang
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Jiho Jeon
Sungkyunkwan University Advanced Institute of Nano Technology
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Hak Ki Yu
Ajou University
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Junyoung Mun
Sungkyunkwan University

Corresponding Author:munjy@skku.edu

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Jae-Young Choi
Sungkyunkwan University School of Advanced Materials Science and Engineering
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Hyung-Suk Oh
School of Advanced Materials Science & Engineering and KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University
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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.
09 Apr 2024Submitted to EcoMat
10 Apr 2024Submission Checks Completed
10 Apr 2024Assigned to Editor
21 Apr 2024Review(s) Completed, Editorial Evaluation Pending
21 Apr 2024Editorial Decision: Revise Minor
26 Apr 2024Assigned to Editor
26 Apr 2024Submission Checks Completed
26 Apr 2024Review(s) Completed, Editorial Evaluation Pending
30 Apr 2024Reviewer(s) Assigned
18 May 2024Editorial Decision: Accept