Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries
- Authors
- Kim, Min-Seop; Kim, Mun Sek; Do, Vandung; Xia, Yongyao; Kim, Woong; Cho, Won Il
- Issue Date
- 2019-05-15
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF POWER SOURCES, v.422, pp.104 - 112
- Abstract
- Lithium-sulfur battery is garnering much of attention due to its high energy densities, low-cost active material of sulfur and variety of applications in portable electronics. High integrity and consistent qualities of the large-scale sulfur cathode with high energy have to be ensured to construct reliable and practical lithium-sulfur batteries that could supersede advancing lithium-ion batteries. Here, facile and productive approaches are developed to mass-produce functional sulfur hosts and to fabricate large-scale sulfur cathode with high sulfur loading. The functional sulfur host is synthesized by anchoring polyethylenimine at the surface of commercially available carbon at inert conditions with a scale of more than 10 g per batch via simple solution method. Combining the functionalized sulfur host with a polyacrylic acid binder allows high integrity and uniformity of the high sulfur loading cathode to be fabricated in large dimensions. Followed by this approach, the sulfur cathode, 70 x 6 cm(2), is produced with the sulfur loading of > 4.3 mg cm(-2). It is found that 12 wt% of polyethylenimine in the functionalized sulfur host with polyacrylic acid is at optimal condition that presents stable electrochemical performances over 600 cycles.
- Keywords
- RAMAN-SPECTROSCOPY; ION BATTERY; LONG-LIFE; ELECTRODE; GRAPHENE; COMPOSITES; DISCHARGE; CAPACITY; POLYMER; AREA; RAMAN-SPECTROSCOPY; ION BATTERY; LONG-LIFE; ELECTRODE; GRAPHENE; COMPOSITES; DISCHARGE; CAPACITY; POLYMER; AREA; Surface functionalization; Large-scale sulfur cathode; Polar binder; Lithium-sulfur batteries
- ISSN
- 0378-7753
- URI
- https://pubs.kist.re.kr/handle/201004/119991
- DOI
- 10.1016/j.jpowsour.2019.02.093
- Appears in Collections:
- KIST Article > 2019
- 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.