Copper-antimony-red phosphorus composites as promising anode materials for sodium-ion batteries
- Authors
- Mun, Yoo Seok; Yoon, Younghoon; Hur, Jaehyun; Park, Min Sang; Bae, Joonwon; Kim, Ji Hyeon; Yoon, Young Soo; Yoo, In Sang; Lee, Seung Geol; Kim, Il Tae
- Issue Date
- 15-Sep-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Red phosphorus; Antimony; Copper; Sodium-ion batteries; Electrolyte additives; Density functional theory
- Citation
- JOURNAL OF POWER SOURCES, v.362, pp.115 - 122
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 362
- Start Page
- 115
- End Page
- 122
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5706
- DOI
- 10.1016/j.jpowsour.2017.07.031
- ISSN
- 0378-7753
- Abstract
- A novel phosphorus-based alloy composite, Sb-CuP2-C, is synthesized by a simple two-step high-energy ball milling (HEBM) method and used as an anode material for sodium-ion batteries. The HEBM process with Sb, Cu, P, and C generates Sb and CuP2 phases instead of forming Cu2Sb and P owing to the differences in binding energy among the elements, which is confirmed by density functional theory. The as prepared Sb-CuP2-C composite consists of the electrochemically active components Sb and CuP2, which are embedded in a conductive carbon matrix, as determined by X-ray diffraction analysis and high resolution transmission electron microscopy. The composite electrode demonstrates significantly improved cycling performance owing to the presence of both a carbon matrix, which acts as a buffer to accommodate the large volume expansion during sodiation, and a conductive metal framework of copper. The introduction of red phosphorus into the composite yields higher reversible charge capacities compared to that of a Cu2Sb-C composite. The Sb-CuP2-C electrode exhibits a high capacity retention of similar to 80% even after 100 cycles. Moreover, it presents stable rate cycling performance with a capacity retention of similar to 78% at 3000 mA g(-1). (C) 2017 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
- 공과대학 > 신소재공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5706)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.