High lithium storage properties in a manganese sulfide anode via an intercalation-cum-conversion reactionHigh lithium storage properties in a manganese sulfide anodeviaan intercalation-cum-conversion reaction
- Other Titles
- High lithium storage properties in a manganese sulfide anodeviaan intercalation-cum-conversion reaction
- Authors
- Lee, Seulgi; Song, Moonsu; Kim, Sungjin; Mathew, Vinod; Sambandam, B; Hwang, Jang Yeon; Kim, Jaekook
- Issue Date
- Sep-2020
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.8, no.34, pp.17537 - 17549
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 8
- Number
- 34
- Start Page
- 17537
- End Page
- 17549
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190431
- DOI
- 10.1039/d0ta05758d
- ISSN
- 2050-7488
- Abstract
- Transition-metal sulfides are of significant interest as rechargeable battery anodes owing to their low cost, wide availability, eco-friendliness, and high theoretical capacities. However, extraordinary structural changes in these materials cause pulverization of the electrode, thereby limiting their practical electrochemical abilities. Herein, a simple one-pot polyol refluxing method is used for fabricating a manganese sulfide (MnS) electrode composited with nitrogen and sulfur co-doped carbon (MnS@NS-C) for high-power lithium-ion batteries. This electrode exhibits unique spherical particle morphology with optimized average particle size (300 <x< 500 nm) and porous features. Owing to its nanostructure, porous nature, and an electrically conducting carbon network co-doped with heteroatoms, the composite electrode overcomes the strong structural variations to afford high practical storage capacities, long-term cycle stability, and outstanding rate capability. The MnS@NS-C electrode demonstrated high reversible storage capacities of 999 mA h g(-1)at 0.1 A g(-1), the highest reversible capacity of 761 mA h g(-1)at 2 A g(-1)for over 300 cycles, and average rate capacities of 453 mA h g(-1)at 10 A g(-1).In situsynchrotron X-ray diffraction investigations indicated a uniquely combined intercalation-cum-conversion reaction mechanism leading to beta-Li2(1-x)MnS, Li2S, and Mn discharge products. The results of this study can provide deep insights into understanding intriguing reactions and motivate further study of transition-metal sulfides for prospective high-energy battery applications.
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