Porous SnO2/C Nanofiber Anodes and LiFePO4/C Nanofiber Cathodes with a Wrinkle Structure for Stretchable Lithium Polymer Batteries with High Electrochemical Performance
- Authors
- Kwon, O. Hyeon; Oh, Jang Hyeok; Gu, Bobae; Jo, Min Su; Oh, Se Hwan; Kang, Yun Chan; Kim, Jae-Kwang; Jeong, Sang Mun; Cho, Jung Sang
- Issue Date
- 9월-2020
- Publisher
- WILEY
- Keywords
- lithium-ion batteries; nanofibers; stretchable batteries; stretchable gel polymer electrolytes; wrinkle structure
- Citation
- ADVANCED SCIENCE, v.7, no.17
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED SCIENCE
- Volume
- 7
- Number
- 17
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/53616
- DOI
- 10.1002/advs.202001358
- ISSN
- 2198-3844
- Abstract
- Stretchable lithium batteries have attracted considerable attention as components in future electronic devices, such as wearable devices, sensors, and body-attachment healthcare devices. However, several challenges still exist in the bid to obtain excellent electrochemical properties for stretchable batteries. Here, a unique stretchable lithium full-cell battery is designed using 1D nanofiber active materials, stretchable gel polymer electrolyte, and wrinkle structure electrodes. A SnO2/C nanofiber anode and a LiFePO4/C nanofiber cathode introduce meso- and micropores for lithium-ion diffusion and electrolyte penetration. The stretchable full-cell consists of an elastic poly(dimethylsiloxane) (PDMS) wrapping film, SnO2/C and LiFePO4/C nanofiber electrodes with a wrinkle structure fixed on the PDMS wrapping film by an adhesive polymer, and a gel polymer electrolyte. The specific capacity of the stretchable full-battery is maintained at 128.3 mAh g(-1)(capacity retention of 92%) even after a 30% strain, as compared with 136.8 mAh g(-1)before strain. The energy densities are 458.8 Wh kg(-1)in the released state and 423.4 Wh kg(-1)in the stretched state (based on the electrode), respectively. The high capacity and stability in the stretched state demonstrate the potential of the stretchable battery to overcome its limitations.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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