High-capacity sulfur copolymer cathode with metallic fibril-based current collector and conductive capping layer
- Authors
- Shin, Dongyeeb; Song, Yongkwon; Nam, Donghyeon; Moon, Jun Hyuk; Lee, Seung Woo; Cho, Jinhan
- Issue Date
- 28-1월-2021
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.4, pp.2334 - 2344
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 9
- Number
- 4
- Start Page
- 2334
- End Page
- 2344
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/50055
- DOI
- 10.1039/d0ta09516h
- ISSN
- 2050-7488
- Abstract
- Highly conductive and porous current collectors that can provide favorable interfacial interaction with sulfur components play a critical role in the performance of lithium-sulfur (Li-S) batteries. Although three-dimensional (3D) porous textiles have emerged as promising current collector materials, most reported approaches have reached a limit in producing textiles with metal-like conductivity and do not effectively utilize the large surface area of textiles. Here, we introduce a Li-S copolymer cathode with high areal/specific capacity and good rate capability using a metallic cotton textile (CT)-based current collector that exhibits strong interfacial interaction with sulfur. To fabricate the metallic current collector, CT was first carbonized and subsequently electroplated with nickel (Ni). When a sulfur copolymer-based hybrid slurry and layer-by-layer-assembled conductive capping layer were deposited onto the Ni-electroplated CT, the resulting Li-S copolymer cathode displayed significantly enhanced areal capacity, specific capacity, and rate capability. These improvements were realized due to the full utilization of the large conductive surface area of Ni-electroplated CT as well as the effective chemical confinement of soluble lithium polysulfides by a conductive capping layer. The Li-S copolymer cathode prepared in this study outperforms previously reported sulfur copolymer-based cathodes and provides a basis for the development and design of future high-performance electrodes.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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