Published January 1, 2015 | Version v1
Journal article Metadata-only

Influences of La doping on magnetic and electrochemical properties of Li3V2(PO4)3/C cathode materials for lithium-ion batteries

Creators

Description

Li3V2−xLax(PO4)3/C cathode materials have been successfully synthesized by a sol-gel method. The monoclinic structure of Li3V2(PO4)3 appeared in La doped samples which show enlarged unit cell volumes compared with the sample without La doping. The doping of La influences magnetic property of Li3V2(PO4)3/C, e.g. the magnetic susceptibility of Li3V2−xLax(PO4)3/C decreases rapidly with the increasing of La content. La doped composites exhibit better electrochemical property than that of the undoped one and the Li3V1.975La0.025(PO4)3/C displays the highest capacity and best cycle stability. The Li3V1.975La0.025(PO4)3/C presents the first discharge capacity of 122.4 mAh g−1 at 1 C rate in the voltage range of 3.0–4.3 V, 15.7% higher than that of Li3V2(PO4)3/C. And there is no capacity loss after 50 cycles. The rapid Li+ diffusion and high structural stability due to the doping of La3+ are mainly responsible for the good electrochemical performance of La doped Li3V2(PO4)3/C cathode materials

Availability note (English)

Available from http://dx.doi.org/10.1016/j.electacta.2014.11.052

Additional details

Identifiers

DOI
10.1016/j.electacta.2014.11.052;
PII
S0013-4686(14)02247-6;

Publishing Information

Journal Title
Electrochimica Acta
Journal Volume
151
Journal Page Range
p. 378-385
ISSN
0013-4686
CODEN
ELCAAV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47002766
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CARBON; CATHODES; DIFFUSION; DOPED MATERIALS; ELECTRIC POTENTIAL; ELECTROCHEMISTRY; LANTHANUM COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM ION BATTERIES; LITHIUM IONS; MAGNETIC SUSCEPTIBILITY; MONOCLINIC LATTICES; SOL-GEL PROCESS; VANADIUM PHOSPHATES
Descriptors DEC
ALKALI METAL COMPOUNDS; CHARGED PARTICLES; CHEMISTRY; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELECTRODES; ELEMENTS; ENERGY STORAGE SYSTEMS; ENERGY SYSTEMS; IONS; MAGNETIC PROPERTIES; MATERIALS; NONMETALS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; THREE-DIMENSIONAL LATTICES; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS

Optional Information

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