Facile Synthesis of quantum dots SnO2/Fe3O4 hybrid composites for superior reversible lithium-ion storage
- Authors
- Tuan Loi Nguyen; Hur, Jaehyun; Kim, Il Tae
- Issue Date
- 25-Apr-2019
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Lithium-ion batteries; Galvanic replacement reaction; Quantum dots; Tin dioxide; Iron oxide
- Citation
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.72, pp.504 - 511
- Journal Title
- JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
- Volume
- 72
- Start Page
- 504
- End Page
- 511
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1571
- DOI
- 10.1016/j.jiec.2019.01.006
- ISSN
- 1226-086X
- Abstract
- Quantum dots SnO2/Fe3O4 hybrid composites were synthesized by galvanic replacement reaction between Fe3+ ions and Sn and were utilized as anodes for lithium-ion batteries. The composites at few-nanometer scale showed different compositions of SnO2 and Fe3O4 with different reaction time. The composites exhibited significantly enhanced electrochemical performance; for instance, SnO2/Fe3O4-18 h electrode delivered a reversible capacity of 1300 mAh g(-1) after 100 cycles and a rate capacity of 507 mAhg(-1) at 10 Ag-1. The notable performance was ascribed to the presence of quantum dots nanostructures and inactive phases and to the generation of a short Li+-ion diffusion pathway. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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