Fullerence Coated Fluorine-doped Tin Oxide Films as Anode Materials for Li-Ion Batteries via Plasma Deposition
- Fullerence Coated Fluorine-doped Tin Oxide Films as Anode Materials for Li-Ion Batteries via Plasma Deposition
- 차이룰 후다야; 박지훈; 김아영; 최원창; 이중기
- Fullerence (C60); fluorine-doped tin oxide (FTO); anode material; lithium-ion battery; ECR-MOCVD
- Issue Date
- 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.
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