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Fabrication of Fe‐Doped LiCoO 2 Sandwich‐Like Nanocomposites as Excellent Performance Cathode Materials for Lithium‐Ion Batteries
Author(s) -
Liu Li,
Zhang Huijuan,
Yang Jiao,
Mu Yanping,
Wang Yu
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201503734
Subject(s) - materials science , fabrication , lithium (medication) , nanocomposite , doping , cathode , ion , nanotechnology , chemical engineering , optoelectronics , chemistry , medicine , alternative medicine , organic chemistry , pathology , endocrinology , engineering
In this article, the two‐layer sandwiched graphene@LiFe 0.2 Co 0.8 O 2 nanoparticles (SG@LFCO) have been prepared and investigated as high‐rate and long‐life cathode materials for rechargeable lithium‐ion batteries. The materials possess a high‐surface area (267.1 m 2 g −1 ) and lots of void spaces. By combining various favorable conditions, such as Fe doping, coating graphene, and designing novel morphology, the as‐prepared materials deliver a specific capacity of 115 mAh g −1 at 10 C. At the 0.1 C cycling rate, the capacity retention of 97.2 % is sustained after 250 cycles and a coulombic efficiency of around 97.6 % is obtained.