Published December 10, 2014 | Version v1
Journal article Metadata-only

Improvement of electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode material by graphene nanosheets modification

Creators

  • 1. Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094 (China)
  • 2. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
  • 3. Department of Physics and Institute of Biophysics, Central China Normal University, Wuhan 430079 (China)
  • 4. Key Laboratory for Clearer Energy and Functional Materials of Henan Province, Colleage of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000 (China)

Description

Layered LiNi0.8Co0.1Mn0.1O2-graphene composite is synthesized by a facile chemical approach and used as the cathode material for lithium-ion batteries. The structural and morphological features of as-prepared LiNi0.8Co0.1Mn0.1O2-graphene composite are investigated with powder X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. The characterization results indicate that the LiNi0.8Co0.1Mn0.1O2 particles maintain their structural integrity and crystal features after being enwrapped with graphene nanosheets. The graphene-modified LiNi0.8Co0.1Mn0.1O2 comoposite exhibits superior electrochemical performance compared to the pristine LiNi0.8Co0.1Mn0.1O2 powders. The LiNi0.8Co0.1Mn0.1O2-graphene composite shows a large initial discharge capacity up to 212.9 mAh g−1 as well as good cycling performance and good rate capability. The outstanding electrochemical performance of the graphene-modified LiNi0.8Co0.1Mn0.1O2 composite can be attributed to the improved electrical conductivity and structural stability due to the highly conductive graphene matrix

Availability note (English)

Available from http://dx.doi.org/10.1016/j.electacta.2014.10.093

Additional details

Identifiers

DOI
10.1016/j.electacta.2014.10.093;
PII
S0013-4686(14)02101-X;

Publishing Information

Journal Title
Electrochimica Acta
Journal Volume
149
Journal Page Range
p. 86-93
ISSN
0013-4686
CODEN
ELCAAV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47002680
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CAPACITY; CATHODES; COBALT COMPOUNDS; COMPARATIVE EVALUATIONS; CRYSTALS; ELECTRIC CONDUCTIVITY; ELECTROCHEMISTRY; GRAPHENE; LITHIUM COMPOUNDS; LITHIUM ION BATTERIES; MANGANATES; NANOSTRUCTURES; NICKEL COMPOUNDS; POWDERS; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
ALKALI METAL COMPOUNDS; CARBON; CHEMISTRY; COHERENT SCATTERING; DIFFRACTION; ELECTRIC BATTERIES; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; ELECTRODES; ELECTRON MICROSCOPY; ELEMENTS; ENERGY STORAGE SYSTEMS; ENERGY SYSTEMS; EVALUATION; LASER SPECTROSCOPY; MANGANESE COMPOUNDS; MICROSCOPY; NONMETALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.