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In this work, MnO2 coated carbon nanofiber (MnO2/CNF) composites have been synthesized using a combination of electrospinning and hydrothermal techniques. First, CNFs are synthesized by electrospinning, then coated them with MnO2 based on the self-limiting reaction between CNFs and KMnO4. The prepared composites of MnO2/CNFs are used as a low-cost counter electrode (CE) for dye-sensitized solar cells...
To improve the catalytic activity of Nb2O5, a composite Nb2O5/C (Nb2O5 imbedded in carbon support) is synthesized with a simple in situ method and then introduced the composite into dye-sensitized solar cells (DSCs) as a counter electrode (CE) catalyst. Based on the analysis of the cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel-polarization curve measurements, the catalytic...
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