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Monodispersed FeS 2...
Monodispersed FeS 2 Electrocatalyst Anchored to Nitrogen-Doped Carbon Host for Lithium–Sulfur Batteries
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- Sun, Weiwei (author)
- National University of Defense Technology
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- Liu, Shuangke (author)
- National University of Defense Technology
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- Li, Yujie (author)
- National University of Defense Technology
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- Wang, Danqin (author)
- National University of Defense Technology
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- Guo, Qingpeng (author)
- National University of Defense Technology
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- Hong, Xiaobin (author)
- National University of Defense Technology
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- Xie, K (author)
- National University of Defense Technology
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- Ma, Zhongyun (author)
- Xiangtan University
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- Zheng, Chunman (author)
- National University of Defense Technology
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- Xiong, Shizhao, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2022-08-15
- 2022
- English.
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In: Advanced Functional Materials. - : Wiley. - 1616-3028 .- 1616-301X. ; 32:43
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https://doi.org/10.1...
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Abstract
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- Despite their high theoretical energy density, lithium–sulfur (Li–S) batteries are hindered by practical challenges including sluggish conversion kinetics and shuttle effect of polysulfides. Here, a nitrogen-doped continuous porous carbon (CPC) host anchoring monodispersed sub-10 nm FeS2 nanoclusters (CPC@FeS2) is reported as an efficient catalytic matrix for sulfur cathode. This host shows strong adsorption of polysulfides, promising the inhibition of polysulfide shuttle and the promoted initial stage of catalytic conversion process. Moreover, fast lithium ion (Li-ion) diffusion and accelerated solid–solid conversion kinetics of Li2S2 to Li2S on CPC@FeS2 host guarantee boosted electrochemical kinetics for conversion process of sulfur species in Li–S cell, which gives a high utilization of sulfur under practical conditions of high loading and low electrolyte/sulfur (E/S) ratio. Therefore, the surfur cathode (S/CPC@FeS2) delivers a high specific capacity of 1459 mAh g−1 at 0.1 C, a stable cycling over 900 cycles with ultralow fading rate of 0.043% per cycle, and an enhanced rate capability compared with cathode only using carbon host. Further demonstration of this cathode in Li–S pouch cell shows a practical energy density of 372 Wh kg−1 with a sulfur loading of 7.1 mg cm−2 and an E/S ratio of 4 µL mg−1.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
Keyword
- pouch cells
- lithium–sulfur batteries
- high energy densities
- high sulfur loading
- electrocatalyses
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Sun, Weiwei
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Liu, Shuangke
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Li, Yujie
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Wang, Danqin
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Guo, Qingpeng
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Hong, Xiaobin
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show more...
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Xie, K
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Ma, Zhongyun
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Zheng, Chunman
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Xiong, Shizhao, ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Other Chemical E ...
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Chalmers University of Technology