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Carbon‐Encapsulated Pyrite as Stable and Earth‐Abundant High Energy Cathode Material for Rechargeable Lithium Batteries
Author(s) -
Liu Jun,
Wen Yuren,
Wang Yi,
van Aken Peter A.,
Maier Joachim,
Yu Yan
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401496
Subject(s) - nanocages , pyrite , materials science , cathode , carbon fibers , lithium (medication) , porosity , nanotechnology , chemical engineering , metallurgy , composite material , chemistry , medicine , biochemistry , composite number , engineering , endocrinology , catalysis
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 ).