e-journal

Electrochemical performance of carbon-coated lithium manganese silicate for asymmetric hybrid supercapacitors

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Abstract.
Nanoscale carbon-coated Li2MnSiO4 powder is prepared using a conventional solid-state method and can
be used as the negative electrode in a Li2MnSiO4/activated carbon (AC) hybrid supercapacitor. Carboncoated
Li2MnSiO4 material presents a well-developed orthorhombic crystal structure with a Pmn21 space
group, although there is a small impurity of MnO. The maximum specific capacitance of the Li2MnSiO4/AC
hybrid supercapacitor is 43.2 F g−1 at1mAcm−2 current density. The cell delivers a specific energy as high
as 54Whkg−1 at a specific power of 150Wkg−1 and also exhibits an excellent cycle performance with
more than 99% columbic efficiency and the maintenance of 85% of its initial capacitance after 1000 cycles.

Keywords:
Capacitance
Carbon-coated lithium manganese silicate
Hybrid supercapacitor
Activated carbon
Specific energy
Specific power

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2010

Deskripsi Fisik

Journal of Power Sources 195 (2010) 3761–3764

Bahasa

English

ISBN/ISSN

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Klasifikasi

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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 MATERIAL

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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