Precision integration of uniform molecular-level carbon into porous silica framework for synergistic electrochemical activation in high-performance lithium-ion batteries
- Authors
- 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
- Issue Date
- 2024-06
- Publisher
- Wiley
- Citation
- EcoMat, v.6, no.6
- 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. image
- Keywords
- ANODE MATERIAL; DESIGN; NANOPARTICLES; STORAGE; LITHIATION; PARTICLES; COMPOSITE; SIO2; anode; Li-ion battery; porous materials; SiO2@carbon nanoparticles
- URI
- https://pubs.kist.re.kr/handle/201004/150148
- DOI
- 10.1002/eom2.12469
- Appears in Collections:
- KIST Article > 2024
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.