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P-doped Fullerene Films as Coating Materials for Silicon Film Anodes of Lithium Secondary Batteries

Phosphorus doped fullerene C60 (P:C60) thin films were introduced as coating materials for silicon film anodes of lithium secondary batteries using a plasma assisted thermal evaporation technique. The P:C60 coated silicon films were then used as anode materials of lithium secondary batteries. The electrochemical
characteristics of the coated electrodes were studied by charge discharge tests, cyclic voltammetry and impedance spectroscopy.
Electrochemical measurements revealed that the higher coulombic efficiency of 91% and lower irreversible capacity of 298 mAhg-1on the first cycle were observed for the P:C60 coated silicon electrodes in comparison with the bare silicon case. In addition, the stable cyclic property and high capacity retention after the 30th cycle were demonstrated. All above mentioned results were attributed to the improved conductivity due to the presence of C60 coating layer which might contribute to the faster transfer of Li-ions at the electrode/electrolyte interface.

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Informasi Detail

Judul Seri

ECS TRANSACTIONS; Vol.033 No.29 August 2011

No. Panggil

-

Penerbit

: IOP.,

Deskripsi Fisik

p. 67-73

Bahasa

English

ISBN/ISSN

1938-5862

Klasifikasi

-

Tipe Isi

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Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

-

Info Detail Spesifik

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Pernyataan Tanggungjawab

Arenst Andreas Arie, Joong Kee Lee

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