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Three-deminstional Hemisphere-structured LiSn_(0.0125)Mn_(1.975)O_(4) Thin-Film Cathodes

Published

Author(s)

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

Abstract

Three-dimensional (3D) high surface area LiSn_(0.0125)Mn_(1.975)O-(4) thin film cathodes have been fabricated in order to increase a charge/discharge capacity in the Li-ion battery. Metal oxide films were deposited by RF magnetron sputtering on close-packed, linked, and isolated 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 μAh•µm^(-1)•cm^(-2) without significant degradation of the cyclic retention.
Citation
Electrochemistry Communications

Citation

Yim, H. , Kong, W. , Yoon, S. , Nahm, S. , Jang, H. , Sung, Y. , Ha, J. , Davydov, A. and Choi, J. (2014), Three-deminstional Hemisphere-structured LiSn_(0.0125)Mn_(1.975)O_(4) Thin-Film Cathodes, Electrochemistry Communications (Accessed May 22, 2024)

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Created March 4, 2014, Updated October 12, 2021