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Electrochemical profile of an asymmetric supercapacitor using carbon-coated LiTi2(PO4)3 and active carbon electrodes

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a b s t r a c t
In thiswork,we reported an asymmetric supercapacitor in which active carbon (AC)was used as a positive
electrode and carbon-coated LiTi2(PO4)3 as a negative electrode in 1M Li2SO4 aqueous electrolyte. The
LiTi2(PO4)3/AC hybrid supercapacitor showed a sloping voltage profile from 0.3 to 1.5 V, at an average
voltage near 0.9 V, and delivered a capacity of 30mAhg−1 and an energy density of 27Whkg−1 based on
the totalweight of the active electrode materials. It exhibited a desirable profile and maintained over 85% of its initial energy density after 1000 cycles. The hybrid supercapacitor also exhibited an excellent rate capability, even at a power density of 1000Wkg−1, it had a specific energy 15Whkg−1 compared with 24Wh kg−1 at the power density about 200Wkg−1.
Keywords: Aqueous, Electrochemical capacitor, Li2SO4, Hybrid, Battery, Energy

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Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

: Published by Elsevier B.V.., 2008

Deskripsi Fisik

Journal of Power Sources 186 (2009) 224–227

Bahasa

English

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

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Pernyataan Tanggungjawab

yuli/agus

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