Flexible freestanding Fe2O3-SnOx-carbon nanofiber composites for Li ion battery anodes
- Authors
- Joshi, Bhavana N.; An, Seongpil; Kim, Yong Il; Samuel, Edmund P.; Song, Kyo Yong; Seong, Il Won; Al-Deyab, Salem S.; Swihart, Mark T.; Yoon, Woo Young; Yoon, Sam S.
- Issue Date
- 5-4월-2017
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Carbon nanofiber; Fe2O3; SnOx; Electrospinning; Freestanding; Lithium ion battery
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.700, pp.259 - 266
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 700
- Start Page
- 259
- End Page
- 266
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/83778
- DOI
- 10.1016/j.jallcom.2017.01.057
- ISSN
- 0925-8388
- Abstract
- We demonstrate electrospun ternary Fe2O3-SnOx-carbon nanofiber (CNF) composites as highperformance, flexible, and freestanding anodes for Li ion batteries (LIBs). In the ternary composites, the CNF matrix accommodates volume changes of Fe and Sn during lithiation and delithiation, while also providing short Li ion diffusion pathways, which ultimately enhances the capacity of the LIB. The concentrations of Fe and Sn were varied to find the optimal composition. Higher Sn content increased capacity at slow discharge rates, but decreased capacity at higher discharge rates. Increasing Fe to Sn ratio improved performance at high discharge rates. The Fe2O3-SnOx-CNF composite fabricated at a Fe:Sn weight ratio of 3:1 exhibited a reversible capacity value of 756 mAh-g(-1) after 55 cycles. The materials and methods demonstrated here are unique in producing a flexible, free-standing mat with high gravimetric capacity using a simple and scalable production process. (C) 2017 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
- College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.