Highly Cyclable Lithium-Sulfur Batteries with a Dual-Type Sulfur Cathode and a Lithiated Si/SiOx Nanosphere Anode
- Authors
- Lee, Sang-Kyu; Oh, Seung-Min; Park, Eunjun; Scrosati, Bruno; Hassoun, Jusef; Park, Min-Sik; Kim, Young-Jun; Kim, Han su; Belharouak, Ilias; Sun, Yang Kook
- Issue Date
- May-2015
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Lithium-sulfur battery; polysulfide-catholyte; silicon-based anode; full cell; hybrid cathode
- Citation
- NANO LETTERS, v.15, no.5, pp.2863 - 2868
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO LETTERS
- Volume
- 15
- Number
- 5
- Start Page
- 2863
- End Page
- 2868
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24974
- DOI
- 10.1021/nl504460s
- ISSN
- 1530-6984
- Abstract
- Lithium-sulfur batteries could become an excellent alternative to replace the currently used lithium-ion batteries due to their higher energy density and lower production cost; however, commercialization of lithium-sulfur batteries has so far been limited due to the cyclability problems associated with both the sulfur cathode and the lithium-metal anode. Herein, we demonstrate a highly reliable lithium-sulfur battery showing cycle performance comparable to that of lithium ion batteries; our design uses a highly reversible dual-type sulfur cathode (solid sulfur electrode and polysulfide catholyte) and a lithiated Si/SiOx nanosphere anode. Our lithium-sulfur cell shows superior battery performance in terms of high specific capacity, excellent charge-discharge efficiency, and remarkable cycle life, delivering a specific capacity of similar to 750 mAh g(-1) over 500 cycles (85% of the initial capacity). These promising behaviors may arise from a synergistic effect of the enhanced electrochemical performance of the newly designed anode and the optimized layout of the cathode.
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