Fullerence Coated Fluorine-doped Tin Oxide Films as Anode Materials for Li-Ion Batteries via Plasma Deposition

Title
Fullerence Coated Fluorine-doped Tin Oxide Films as Anode Materials for Li-Ion Batteries via Plasma Deposition
Authors
차이룰 후다야박지훈김아영최원창이중기
Keywords
Fullerence (C60); fluorine-doped tin oxide (FTO); anode material; lithium-ion battery; ECR-MOCVD
Issue Date
2012-08
Publisher
IUMRS-ICA2012
Abstract
Fluorine-doped tin oxide (FTO) is an n-type semiconductor material widely used as a transparent conducting oxide (TCO) in optoelectronic devices such as solar cells, flat panel displays and smart windows. Many attempts have been carried out to study the FTO for TCO materials. We argue, however a limited endeavor is currently present to discover the application of FTO as an anode material for lithium ion battery. In order to enhance the electrochemical properties of the anode, we deposit a thin carbon allotrope, fullerence (C60) onto FTO surface. FTO film was first deposited on to Cu foil (battery grade) under plasma environment prepared by Electron Cyclotron Resonance – Metal Organic Chemical Vapor Deposition (ECR-MOCVD) and was then coated by C60 in the Radio Frequency (RF) magnetron sputtering. The coated FTO films with a thickness of 1.4 - 1.5 μm are assembled in a pouch type half-cells together with lithium metal as a counter electrode, 1 M LiPF6 dissolved in a 1:1:1 (volume/volume) mixture of ethylene carbonate (EC), diethyl carbonate (DEC) and dimethyl carbonate (DMC) as electrolyte and polypropylene as separator. The coated FTO exhibits a better electrochemical performance due to the involvement of fullerence coating layer which attributes to mechanical stability by decreasing side reaction with electrolyte during the cycle test.
URI
http://pubs.kist.re.kr/handle/201004/43065
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KIST Publication > Conference Paper
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