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Electrochemical Behavior of Li-Powder Anode in High Li Capacity Used

Authors
Kong, Shin-KookKim, Bok-KiYoon, Woo-Young
Issue Date
2012
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.159, no.9, pp.A1551 - A1553
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume
159
Number
9
Start Page
A1551
End Page
A1553
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/109296
DOI
10.1149/2.062209jes
ISSN
0013-4651
Abstract
The prevention of Li dendrite growth in Li-metal secondary cells is investigated using high-Li-content electrodes. Li powder is formed using droplet emulsions, and the powder is then used to fabricate porous Li-powder electrodes that are tested against Li-foil electrodes. Scanning electron microscopy results show that dendrites form in a Li-foil cell when the cell is charged and discharged to 25% of the theoretical Li capacity (965 mAhg(-1)) at 1/3 C-rate (5mAcm(-2)). This dendrite formation causes cell failure after 10 cycles. No dendrites are observed in the Li-powder cell tested for 250 cycles. Li-powder anodes can be used directly in high-capacity cells such as Li-air or Li-S cells. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.062209jes] All rights reserved.
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