Flake-like oxygen-deficient lithium vanadium oxides as a high ionic and electronic conductive cathode material for high-power Li-ion battery View Full Text


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Article Info

DATE

2018-05-25

AUTHORS

Jing-quan Li, Chong Han, Mao-xiang Jing, Hua Yang, Xiang-qian Shen, Shi-biao Qin

ABSTRACT

Low electronic and ionic conductivity for LiV3O8 cathode material could lead to poor cycling stability and rate capability, which are considered as the main restraint for its application in Li-ion battery. A novel flake-like LiV3O7.9 material modified by high ionic and electronic conductive Li0.3V2O5/C was fabricated via electrospinning and controlled thermal sintering processes. This oxygen-deficient LiV3O7.9/Li0.3V2O5-C composite electrode sintered at 500 °C exhibits improved rate and cycle stability. The electrode possesses a retention capacity of 151.9mAh/g after 500 cycles at 5C and 84.8mAh/g after 1000 cycles at 10C, respectively. The improvement of the electrochemical performance could be attributed to the synergistic effects of flake-like morphology, oxygen-deficiency and surface modification of Li0.3V2O5/C, which increase the ionic and electronic conductivity of LiV3O8. More... »

PAGES

450

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00339-018-1863-3

DOI

http://dx.doi.org/10.1007/s00339-018-1863-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1104241339


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