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

Haena Yim, Woo Yeon Kong, Seok Jin Yoon, Sahn Nahm, Ho Won Jang, Yung Eun Sung, Jong Yoon Ha, Albert V. Davydov, Ji Won Choi

Research output: Contribution to journalArticle

6 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)36-39
Number of pages4
JournalElectrochemistry Communications
Volume43
DOIs
Publication statusPublished - 2014 Jan 1

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Cathodes
Thin films
Polystyrenes
Spin coating
Specific surface area
Magnetron sputtering
Oxide films
Metals
Degradation
Lithium-ion batteries

Keywords

  • Three-dimensional thin film lithium battery

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Three-dimensional hemisphere-structured LiSn0.0125Mn 1.975O4 thin-film cathodes. / Yim, Haena; Kong, Woo Yeon; Yoon, Seok Jin; Nahm, Sahn; Jang, Ho Won; Sung, Yung Eun; Ha, Jong Yoon; Davydov, Albert V.; Choi, Ji Won.

In: Electrochemistry Communications, Vol. 43, 01.01.2014, p. 36-39.

Research output: Contribution to journalArticle

Yim, H, Kong, WY, Yoon, SJ, Nahm, S, Jang, HW, Sung, YE, Ha, JY, Davydov, AV & Choi, JW 2014, 'Three-dimensional hemisphere-structured LiSn0.0125Mn 1.975O4 thin-film cathodes', Electrochemistry Communications, vol. 43, pp. 36-39. https://doi.org/10.1016/j.elecom.2014.02.016
Yim, Haena ; Kong, Woo Yeon ; Yoon, Seok Jin ; Nahm, Sahn ; Jang, Ho Won ; Sung, Yung Eun ; Ha, Jong Yoon ; Davydov, Albert V. ; Choi, Ji Won. / Three-dimensional hemisphere-structured LiSn0.0125Mn 1.975O4 thin-film cathodes. In: Electrochemistry Communications. 2014 ; Vol. 43. pp. 36-39.
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