Article ID Journal Published Year Pages File Type
7740551 Journal of Power Sources 2013 8 Pages PDF
Abstract
A new SiO2/Cu/polyacrylonitrile-C composite (donated as SiO2/Cu/PAN-C) is prepared by mechanical ball milling and heat treatment of CuO-coated SiO2 and polyacrylonitrile. During heat treatment, Cu is produced by reduction of CuO and SiO2 is embedded in the matrix of Cu and PAN-C. SiO2 in the composite presents a specific capacity of 1230 mAh g−1, and exhibits excellent cyclic stability and rate capability when cycling in the voltage range of 0.0-3.0 V. Electrochemical impedance spectra (EIS) indicate that the addition of Cu effectively improves the conductivity of electrode and diminishes interfacial impedance.
Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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