Carbon-Encapsulated Pyrite as Stable and Earth-Abundant High Energy Cathode Material for Rechargeable Lithium Batteries

Cathode materials consisting of porous pyrite nano‐octahedra encapsulated by uniform carbon nanocages exhibit very high energy density, superior rate capability (reversible capabilities of 439, 340, and 256 mA h g−1 at 1C, 2.5C, and 5C, respectively) and stable cycling performance (ca. 10% capacity...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-09, Vol.26 (34), p.6025-6030
Main Authors: Liu, Jun, Wen, Yuren, Wang, Yi, van Aken, Peter A., Maier, Joachim, Yu, Yan
Format: Article
Language:English
Subjects:
Carbon
carbon-encapsulation
cathode
Cathodes
Cycles
Encapsulation
high-energy conversion
Li-ion batteries
Lithium batteries
nanocages
Nanostructure
Pyrite
Rechargeable batteries
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Summary:Cathode materials consisting of porous pyrite nano‐octahedra encapsulated by uniform carbon nanocages exhibit very high energy density, superior rate capability (reversible capabilities of 439, 340, and 256 mA h g−1 at 1C, 2.5C, and 5C, respectively) and stable cycling performance (ca. 10% capacity loss after 50 cycles at 0.5C with a capacity retention of 495 mA h g−1).
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201401496