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Electrochemical Behavior of Li/LiV3O8 Secondary Cells

Authors
Bak, Hyo RimLee, Jae HaKim, Bok KiYoon, Woo Young
Issue Date
3월-2013
Publisher
KOREAN INST METALS MATERIALS
Keywords
lithium trivanadate; carbon composite; Li metal powder; lithium ion battery
Citation
ELECTRONIC MATERIALS LETTERS, v.9, no.2, pp.195 - 199
Indexed
SCIE
SCOPUS
KCI
OTHER
Journal Title
ELECTRONIC MATERIALS LETTERS
Volume
9
Number
2
Start Page
195
End Page
199
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/103887
DOI
10.1007/s13391-012-2121-z
ISSN
1738-8090
Abstract
Li/LiV3O8 secondary cells with Li-foil and Li-powder anodes were fabricated, and their electrical properties were compared. Using the powder anode, a cell with an initial discharge capacity of 260 mAh g(-1) that could be operated for over 100 cycles was obtained. The porous Li-powder electrode was safely synthesized by pressing an emulsion droplet onto an SUS mesh. A threefold increase in the electrical conductivity of the LiV3O8 cathode was achieved by the addition of carbon using a vibration pot mill. Using the powder anode resulted in 80% capacity retention at the 100th cycle, while that using the foil electrode was 46%; the 1.0 C-rate/0.1 C-rate capacity ratio also increased from 44% to 60%. A cell employing the LiV3O8-carbon composite cathode showed better electrical performance, a capacity retention of 90% after 50 cycles, and an increase in rate capacity ratio. The crystal structure and morphology of the LiV3O8-C composite were investigated by x-ray diffraction and scanning electron microscopy.
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공과대학 (신소재공학부)
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