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Three-dimensional hemisphere-structured LiSn0.0125Mn 1.975O4 thin-film cathodes

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Title
Three-dimensional hemisphere-structured LiSn0.0125Mn 1.975O4 thin-film cathodes
Author(s)
Yim H.; Kong W.Y.; Yoon S.-J.; Nahm S.; Jang H.W.; Yung Eun Sung; Ha J.-Y.; Davydov A.V.; Choi J.-W.
Publication Date
2014-06
Journal
ELECTROCHEMISTRY COMMUNICATIONS, v.43, no., pp.36 - 39
Publisher
ELSEVIER SCIENCE INC
Abstract
Three-dimensional (3D) high surface area LiSn0.0125Mn 1.975O4 thin film cathodes have been fabricated in order to increase a charge capacity in the Li-ion battery. Metal oxide films were deposited by RF magnetron sputtering on three types of hemisphere-structured templates fabricated via spin-coating with polystyrene (PS) beads. Compared to standard planar battery design, the capacities of the close-packed, linked, and isolated 3D films are higher by 1.4, 2.6, and 2.1 times, respectively, which correlates with the corresponding increase of the specific surface area of the templates. The linked hemisphere cathode film shows an improved discharge capacity of 67.6 μA h μm- 1 cm- 2 without significant degradation of the cyclic retention. © 2014 Elsevier B.V.
URI
https://pr.ibs.re.kr/handle/8788114/788
ISSN
1388-2481
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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