Foldable Electrode Architectures Based on Silver-Nanowire-Wound or Carbon-Nanotube-Webbed Micrometer-Scale Fibers of Polyethylene Terephthalate Mats for Flexible Lithium-Ion Batteries.

Citation data:

Advanced materials (Deerfield Beach, Fla.), ISSN: 1521-4095, Vol: 30, Issue: 7

Publication Year:
2018
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/23016
PMID:
29271509
DOI:
10.1002/adma.201705445
Author(s):
Hwang, Chihyun; Song, Woo-Jin; Han, Jung-Gu; Bae, Sohyun; Song, Gyujin; Choi, Nam-Soon; Park, Soojin; Song, Hyun-Kon
Publisher(s):
Wiley; WILEY-V C H VERLAG GMBH
Tags:
Materials Science; Engineering; flexible power sources; lithium-ion batteries; metal nanowires; nonwoven fabrics; wearable devices
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article description
A crumply and highly flexible lithium-ion battery is realized by using microfiber mat electrodes in which the microfibers are wound or webbed with conductive nanowires. This electrode architecture guarantees extraordinary mechanical durability without any increase in resistance after folding 1000 times. Its areal energy density is easily controllable by the number of folded stacks of a piece of the electrode mat. Deformable lithium-ion batteries of lithium iron phosphate as cathode and lithium titanium oxide as anode at high areal capacity (3.2 mAh cm ) are successfully operated without structural failure and performance loss, even after repeated crumpling and folding during charging and discharging.